Grizzly T27400 3/4 HP Tool Post Grinder Owner Manual

Grizzly T27400 3/4 HP Tool Post Grinder Owner Manual

READ THIS FIRST

Model T27400

***IMPORTANT UPDATE***

For Machines Mfd. Since 02/15 and Owner's Manual Printed 08/15

For questions or help with this product contact Tech Support at (570) 546-9663 or techsupport@grizzly.com

We recently discovered the following mistake in the owner's manual:

• Incorrect spindle bearing sizes shown.

This document provides the relevant updates to the owner's manual that no longer applies—aside from this information, all other content in the owner's manual applies and MUST be read and understood for your own safety.

IMPORTANT: Keep this update with the owner's manual for future reference.

For questions or help, contact our Tech Support at (570) 546-9663 or techsupport@grizzly.com.

Correct Spindle Bearings

71

REF PART #

29 30 35 36 PT27400029 PT27400030 PT27400035 PT27400036

DESCRIPTION

BALL BEARING 6203Z BALL BEARING 6203Z BALL BEARING 6203Z BALL BEARING 6203Z 73 72 28 29 30 31 34 35 36 37 39 74 46 73A 24 33 32 24 25 28 29 30 31 34 39 35 36 37 32A 33 COPYRIGHT © DECEMBER, 2016 BY GRIZZLY INDUSTRIAL, INC.

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#WK18612 PRINTED IN CHINA

MODEL T27400 LATHE TOOL POST GRINDER

OWNER'S MANUAL

(For models manufactured since 02/15)

COPYRIGHT © AUGUST, 2015 BY GRIZZLY INDUSTRIAL, INC.

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#JH17457 PRINTED IN CHINA V1.08.15

This manual provides critical safety instructions on the proper setup, operation, maintenance, and service of this machine/tool. Save this document, refer to it often, and use it to instruct other operators. Failure to read, understand and follow the instructions in this manual may result in fire or serious personal injury—including amputation, electrocution, or death.

The owner of this machine/tool is solely responsible for its safe use. This responsibility includes but is not limited to proper installation in a safe environment, personnel training and usage authorization, proper inspection and maintenance, manual availability and compre hension, application of safety devices, cutting/sanding/grinding tool integrity, and the usage of personal protective equipment.

The manufacturer will not be held liable for injury or property damage from negligence, improper training, machine modifications or misuse.

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are: • Lead from lead-based paints.

• Crystalline silica from bricks, cement and other masonry products.

• Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: Work in a well ventilated area, and work with approved safety equip ment, such as those dust masks that are specially designed to filter out microscopic particles.

Table of Contents

INTRODUCTION ............................................................................................................................... 2

Contact Info ................................................................................................................................ 2 Manual Accuracy ........................................................................................................................ 2

Identification ............................................................................................................................... 3

Machine Data Sheet ................................................................................................................... 4

SECTION 1: SAFETY ....................................................................................................................... 6

Safety Instructions for Machinery ............................................................................................... 6

Additional Safety for Lathe Tool Post Grinders .......................................................................... 8

SECTION 2: POWER SUPPLY ........................................................................................................ 9

SECTION 3: SETUP ....................................................................................................................... 11

Needed for Setup ..................................................................................................................... 11 Unpacking ................................................................................................................................ 11

Inventory ................................................................................................................................... 12 Cleanup .................................................................................................................................... 12

Lathe Requirements ................................................................................................................. 13

Mounting on Tool Post ............................................................................................................. 14

Adjusting Grinder Centerline Height......................................................................................... 15 Test Run ................................................................................................................................... 15

SECTION 4: OPERATIONS ........................................................................................................... 16

Operation Overview.................................................................................................................. 16

Lathe Rotation .......................................................................................................................... 17 Wheel Care .............................................................................................................................. 17

Wheel Inspection ...................................................................................................................... 18 Wheel Selection ....................................................................................................................... 18

Wheel Dressing ........................................................................................................................ 19

Tensioning/Changing Belts ...................................................................................................... 20

Installing Internal Wheel Spindle .............................................................................................. 21

Installing External Wheel Spindle............................................................................................. 23

Installing External Wheel .......................................................................................................... 24

SECTION 5: ACCESSORIES ......................................................................................................... 25

SECTION 6: MAINTENANCE......................................................................................................... 26

Schedule .................................................................................................................................. 26 Cleaning & Protecting .............................................................................................................. 26 Lathe Bedway........................................................................................................................... 26 Lubrication ................................................................................................................................ 26

SECTION 7: SERVICE ................................................................................................................... 27

Troubleshooting ........................................................................................................................ 27

SECTION 8: WIRING ...................................................................................................................... 29

Wiring Safety Instructions ........................................................................................................ 29

T27400 Wiring .......................................................................................................................... 30

SECTION 9: PARTS ....................................................................................................................... 31

Main Breakdown....................................................................................................................... 31

Accessories .............................................................................................................................. 33

Label Placement....................................................................................................................... 34

WARRANTY AND RETURNS ........................................................................................................ 37

INTRODUCTION

Contact Info

We stand behind our machines! If you have ques tions or need help, contact us with the information below. Before contacting, make sure you get the serial number and manufacture date from the machine ID label. This will help us help you faster.

Grizzly Technical Support 1203 Lycoming Mall Circle Muncy, PA 17756 Phone: (570) 546-9663 Email: techsupport@grizzly.com

We want your feedback on this manual. What did you like about it? Where could it be improved? Please take a few minutes to give us feedback.

Grizzly Documentation Manager P.O. Box 2069 Bellingham, WA 98227-2069 Email: manuals@grizzly.com

Manual Accuracy

We are proud to provide a high-quality owner’s manual with your new machine!

We made every effort to be exact with the instruc tions, specifications, drawings, and photographs in this manual. Sometimes we make mistakes, but our policy of continuous improvement also means that

sometimes the machine you receive is

slightly different than shown in the manual.

If you find this to be the case, and the difference between the manual and machine leaves you confused or unsure about something, check our website for an updated version. We post current manuals and manual updates for free on our web site at www.grizzly.com.

Alternatively, you can call our Technical Support for help. Before calling, make sure you write down the Manufacture Date and Serial Number from the machine ID label (see below). This information is required for us to provide proper tech support, and it helps us determine if updated documenta tion is available for your machine.

Manufacture Date Serial Number -2 Model T27400 (Mfd. Since 02/15)

Identification

Become familiar with the names and locations of the controls and features shown below to better understand the instructions in this manual.

ON/OFF Toggle Switch Motor Belt Guard Tool Post Mounting Hole Spindle & Quill Spindle Elevation Bolt External Grinding Wheel

To reduce your risk of serious injury, read this entire manual BEFORE using machine.

External Wheel Guard Model T27400 (Mfd. Since 02/15) -3-

Machine Data Sheet

MACHINE DATA SHEET

Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901

MODEL T27400 TOOL POST GRINDER

Product Dimensions:

Weight ............................................................................................................................................................................. 56 lbs.

Width (side-to-side) x Depth (front-to-back) x Height .......................................................................................15 x 12 x 10 in.

Shipping Dimensions:

Type ........................................................................................................................................................................ Wood Crate Content .......................................................................................................................................................................... Machine Weight .............................................................................................................................................................................. 71 lbs.

Length/Width/Height ...........................................................................................................................................18 x 16 x 20 in.

Must Ship Upright .................................................................................................................................................................Yes

Electrical:

Power Requirement ........................................................................................................................ 220V, Single-Phase, 60 Hz Full-Load Current Rating ..................................................................................................................................................... 3.5A

Minimum Circuit Size ........................................................................................................................................................... 15A Connection Type ..................................................................................................................................................... Cord & Plug Power Cord Included ............................................................................................................................................................Yes

Power Cord Length ............................................................................................................................................................6

1 ⁄ 2 ft. Power Cord Gauge ....................................................................................................................................................... 16 AWG Plug Included ........................................................................................................................................................................Yes Included Plug Type ..............................................................................................................................................................6-15 Switch Type .......................................................................................................................................... ON/OFF Toggle Switch

Motor:

Type ...................................................................................................................................................................TEFC Induction Horsepower ........................................................................................................................................................................

3 ⁄ 4 HP Voltage ............................................................................................................................................................................... 220V Phase .................................................................................................................................................................... Single-Phase Amps ................................................................................................................................................................................... 3.5A

Speed .........................................................................................................................................................................3450 RPM Cycle ................................................................................................................................................................................. 60 Hz Power Transfer ........................................................................................................................................................... Belt Drive Bearings ............................................................................................................................. Shielded & Permanently Lubricated

Main Specifications: Operation Information

External Grinding Wheel Speed .......................................................................................................................4500 RPM External Grinding Wheel Size (Depth x Width x Bore) ............................................................................... 6 x 3 ⁄ 4 x 5 ⁄ 8 in.

Internal Grinding Wheel Speed .....................................................................................................................18,500 RPM Internal Grinding Wheel Size (Depth x Width x Bore) ...............................................................................

7 ⁄ 16 x Height Range of Grinder Spindle Center Line from Compound Slide ...........................................................1 5 ⁄ 9 ⁄ 16 8 x – 2 1 5 ⁄ ⁄ 4 8 in.

Internal Grinding Wheel Spindle Thread ...................................................................................................................M6-1 Max. Tool Post Diameter Capacity .............................................................................................................................1 in.

Lathe Swing Compatibility ................................................................................................................................12 – 22 in.

in.

Mounting Hole, Slotted (Depth x Length) ........................................................................................................25 x 37mm

Construction

Body Construction .............................................................................................................................................. Cast Iron Spindle ........................................................................................................... Balanced, Hardened & Ground Alloy Steel Paint ...................................................................................................................................................................Urethane

Other Specifications:

Country Of Origin .............................................................................................................................................................. China Warranty ........................................................................................................................................................................... 1 Year Serial Number Location ............................................................................................................................ ID Label on Machine

Features:

Mounts directly to lathe tool post Balanced, hardened alloy steel spindle Fine vertical height adjustment Diamond-tipped dresser Wheel bushing for 32mm bore external wheels Toolbox with service tools 6" x 3 ⁄ 4 " Aluminum-oxide 60-grit external grinding wheel 3 ⁄ 4 " x 3 ⁄ 4 " Aluminum-oxide 60-grit internal grinding wheel Interchangeable spindles for external or internal grinding

Model T27400

Model T27400 (Mfd. Since 02/15)

Page 2 of 2

-5-

SECTION 1: SAFETY

For Your Own Safety, Read Instruction Manual Before Operating This Machine

The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words intended to convey the level of impor tance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures. Always use common sense and good judgment.

Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury.

NOTICE

Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or moderate injury. It may also be used to alert against unsafe practices.

This symbol is used to alert the user to useful information about proper operation of the machine.

Safety Instructions for Machinery

-6 OWNER’S MANUAL. Read and understand this owner’s manual BEFORE using machine. TRAINED OPERATORS ONLY. Untrained oper ators have a higher risk of being hurt or killed. Only allow trained/supervised people to use this machine. When machine is not being used, dis connect power, remove switch keys, or lock-out machine to prevent unauthorized use—especially around children. Make workshop kid proof!

ELECTRICAL EQUIPMENT INJURY RISKS. You can be shocked, burned, or killed by touching live electrical components or improperly grounded machinery. To reduce this risk, only allow qualified service personnel to do electrical installation or repair work, and always disconnect power before accessing or exposing electrical equipment.

DANGEROUS ENVIRONMENTS. Do not use machinery in areas that are wet, cluttered, or have poor lighting. Operating machinery in these areas greatly increases the risk of accidents and injury.

MENTAL ALERTNESS REQUIRED. Full mental alertness is required for safe operation of machin ery. Never operate under the influence of drugs or alcohol, when tired, or when distracted.

DISCONNECT POWER FIRST. Always discon nect machine from power supply BEFORE making adjustments, changing tooling, or servicing machine. This prevents an injury risk from unintended startup or contact with live electrical components.

EYE PROTECTION. Always wear ANSI-approved safety glasses or a face shield when operating or observing machinery to reduce the risk of eye injury or blindness from flying particles. Everyday eyeglasses are NOT approved safety glasses.

Model T27400 (Mfd. Since 02/15)

WEARING PROPER APPAREL. Do not wear clothing, apparel or jewelry that can become entangled in moving parts. Always tie back or cover long hair. Wear non-slip footwear to reduce risk of slipping and losing control or accidentally contacting cutting tool or moving parts.

HAZARDOUS DUST. Dust created by machinery operations may cause cancer, birth defects, or long-term respiratory damage. Be aware of dust hazards associated with each workpiece mate rial. Always wear a NIOSH-approved respirator to reduce your risk.

FORCING MACHINERY. Do not force machine. It will do the job safer and better at the rate for which it was designed.

NEVER STAND ON MACHINE. Serious injury may occur if machine is tipped or if the cutting tool is unintentionally contacted. STABLE MACHINE. Unexpected movement dur ing operation greatly increases risk of injury or loss of control. Before starting, verify machine is stable and mobile base (if used) is locked.

HEARING PROTECTION. Always wear hear ing protection when operating or observing loud machinery. Extended exposure to this noise without hearing protection can cause permanent hearing loss.

REMOVE ADJUSTING TOOLS. Tools left on machinery can become dangerous projectiles upon startup. Never leave chuck keys, wrenches, or any other tools on machine. Always verify removal before starting!

USE RECOMMENDED ACCESSORIES. Consult this owner’s manual or the manufacturer for rec ommended accessories. Using improper acces sories will increase the risk of serious injury.

UNATTENDED OPERATION. To reduce the risk of accidental injury, turn machine while unattended. OFF and ensure all moving parts completely stop before walking away. Never leave machine running USE CORRECT TOOL FOR THE JOB. Only use this tool for its intended purpose—do not force it or an attachment to do a job for which it was not designed. Never make unapproved modifica tions—modifying tool or using it differently than intended may result in malfunction or mechanical failure that can lead to personal injury or death!

AWKWARD POSITIONS. Keep proper footing and balance at all times when operating machine. Do not overreach! Avoid awkward hand positions that make workpiece control difficult or increase the risk of accidental injury.

CHILDREN & BYSTANDERS. Keep children and bystanders at a safe distance from the work area.

Stop using machine if they become a distraction.

GUARDS & COVERS. Guards and covers reduce accidental contact with moving parts or flying debris. Make sure they are properly installed, undamaged, and working correctly BEFORE operating machine.

MAINTAIN WITH CARE. Follow all maintenance instructions and lubrication schedules to keep machine in good working condition. A machine that is improperly maintained could malfunction, leading to serious personal injury or death. DAMAGED PARTS. Regularly inspect machine for damaged, loose, or mis-adjusted parts—or any condition that could affect safe operation. Immediately repair/replace BEFORE operating machine. For your own safety, DO NOT operate machine with damaged parts!

MAINTAIN POWER CORDS. When disconnect ing cord-connected machines from power, grab and pull the plug—NOT the cord. Pulling the cord may damage the wires inside. Do not handle cord/plug with wet hands. Avoid cord damage by keeping it away from heated surfaces, high traffic areas, harsh chemicals, and wet/damp locations.

EXPERIENCING DIFFICULTIES. If at any time you experience difficulties performing the intend ed operation, stop using the machine! Contact our Technical Support at (570) 546-9663.

Model T27400 (Mfd. Since 02/15) -7-

Additional Safety for Lathe Tool Post Grinders

-8-

Serious injury or death can occur from getting clothing, jewelry, or long hair entangled in moving parts or pinch points. Flying debris created by broken grinding wheels or grinding operations can blind or strike nearby operators with deadly force. Rotating grinding wheel will quickly remove skin upon contact. To reduce the risk of operator (or bystander) injury or death, anyone operating machine MUST completely heed the warnings below.

PROPERLY SECURE GRINDER & ENSURE

SAFE WORK AREA. Unexpected movement of grinder could cause grinding wheel to break or fly apart during operation. Before use, verify grinder is properly secured in place before operation and nearby area is free of explosive or flammable materials.

SAFELY START GRINDER. If a wheel is dam aged, it will usually fly apart shortly after start up. To protect yourself, always stand to side of grinder when turning it ON and allow it to run for at least one minute before standing in front of it.

AVOID HAND & WHEEL CONTACT. Position your hands at a safe distance from wheel when grinding. Avoid wearing gloves as they may get caught in spinning wheel or pulleys, resulting in serious entanglement injuries.

USE CORRECT WHEEL FLANGES. Only use flanges included with grinder when mounting external wheel. Other flanges may not properly secure wheel. DO NOT use warped or damaged flanges, and always use paper discs (blotters) between wheel and flanges to reduce risk of flanges cracking external wheel when tightened.

PERFORM VISUAL INSPECTION. Verify that grinding wheels are free of cracks, chips, or dents in wheel surface before installing. DO NOT use wheels that have been dropped or otherwise have any of these problems—they could break apart during operation. PERFORM RING TEST. Perform a “ring test” on external grinding wheel before installation to ensure it is safe to use. A wheel that does NOT pass ring test may break or fly apart during operation. DO NOT use it!

CHECK WHEEL SPEED RATING. Wheels operated faster than their rated speed may break apart during operation. Before mounting a new wheel, be sure wheel RPM rating is equal or higher than speed of grinder. Never use unmarked wheels. CHECK FOR VIBRATING WHEEL. Never perform grinding operations on a wheel that is vibrating. Immediately replace wheel or shaft bearings.

WEAR EYE, FACE, & LUNG PROTECTION.

Grinding ejects small particles at a high rate of speed. These particles can cause eye injuries or blindness, skin injuries, or respiratory damage. ALWAYS wear approved clothing, safety goggles, face shield, and a respirator when grinding.

USE INCLUDED PULLEY & WHEEL

HARDWARE. Using pulleys or wheel mounting hardware other than those supplied with this grinder could cause pulleys or wheels to come loose during operation, causing impact injuries. AVOID ENTANGLEMENT. Becoming entangled in moving parts of grinder can cause pinching and crushing injuries. To avoid these hazards, DO NOT wear loose clothing, gloves, or jewelry, and tie back long hair. Keep all guards in place and secure.

PROPERLY TIGHTEN SPINDLE NUT.

Only tighten wheel spindle nut enough to drive wheel and prevent slippage. Overtightening can crack wheel, which would cause it to fly apart dur ing operation.

Model T27400 (Mfd. Since 02/15)

SECTION 2: POWER SUPPLY

Availability

Before installing the machine, consider the avail ability and proximity of the required power supply circuit. If an existing circuit does not meet the requirements for this machine, a new circuit must be installed. To minimize the risk of electrocution, fire, or equipment damage, installation work and electrical wiring must be done by an electrician or qualified service personnel in accordance with all applicable codes and standards.

Circuit Information

A power supply circuit includes all electrical equipment between the breaker box or fuse panel in the building and the machine. The power sup ply circuit used for this machine must be sized to safely handle the full-load current drawn from the machine for an extended period of time. (If this machine is connected to a circuit protected by fuses, use a time delay fuse marked D.)

Electrocution, fire, or equipment damage may occur if machine is not correctly grounded and connected to the power supply.

Full-Load Current Rating

The full-load current rating is the amperage a machine draws at 100% of the rated output power. On machines with multiple motors, this is the amperage drawn by the largest motor or sum of all motors and electrical devices that might operate at one time during normal operations.

Full-Load Current Rating at 220V .... 3.5 Amps

The full-load current is not the maximum amount of amps that the machine will draw. If the machine is overloaded, it will draw additional amps beyond the full-load rating.

If the machine is overloaded for a sufficient length of time, damage, overheating, or fire may result— especially if connected to an undersized circuit. To reduce the risk of these hazards, avoid over loading the machine during operation and make sure it is connected to a power supply circuit that meets the specified circuit requirements.

For your own safety and protection of property, consult an electrician if you are unsure about wiring practices or electrical codes in your area.

Note: Circuit requirements in this manual apply to

a dedicated circuit—where only one machine will be running on the circuit at a time. If machine will be connected to a shared circuit where multiple machines may be running at the same time, con sult an electrician or qualified service personnel to ensure circuit is properly sized for safe operation.

Circuit Requirements

This machine is prewired to operate on a power supply circuit that has a verified ground and meets the following requirements:

Nominal Voltage ........................................220V

Cycle ..........................................................60 Hz Phase ........................................... Single-Phase Power Supply Circuit ......................... 15 Amps Plug/Receptacle ......................................... 6-15

-9 Model T27400 (Mfd. Since 02/15)

Grounding Requirements

This machine MUST be grounded. In the event of certain malfunctions or breakdowns, grounding reduces the risk of electric shock by providing a path of least resistance for electric current.

This machine is equipped with a power cord that has an equipment-grounding wire and a grounding plug. Only insert plug into a matching receptacle (outlet) that is properly installed and grounded in accordance with all local codes and ordinances. DO NOT modify the provided plug!

GROUNDED 6-15 RECEPTACLE

Current Carrying Prongs

6-15 PLUG

Grounding Prong Figure 1. Typical 6-15 plug and receptacle.

No adapter should be used with plug. If plug does not fit available receptacle, or if machine must be reconnected for use on a different type of circuit, reconnection must be performed by an electrician or qualified service personnel, and it must comply with all local codes and ordinances.

Serious injury could occur if you connect machine to power before completing setup process. DO NOT connect to power until instructed later in this manual.

Improper connection of the equipment-grounding wire can result in a risk of electric shock. The wire with green insulation (with or without yellow stripes) is the equipment-grounding wire. If repair or replacement of the power cord or plug is nec essary, do not connect the equipment-grounding wire to a live (current carrying) terminal.

Check with a qualified electrician or service per sonnel if you do not understand these grounding requirements, or if you are in doubt about whether the tool is properly grounded. If you ever notice that a cord or plug is damaged or worn, discon nect it from power, and immediately replace it with a new one.

Extension Cords

We do not recommend using an extension cord with this machine. If you must use an extension cord, only use it if absolutely necessary and only on a temporary basis.

Extension cords cause voltage drop, which can damage electrical components and shorten motor life. Voltage drop increases as the extension cord size gets longer and the gauge size gets smaller (higher gauge numbers indicate smaller sizes).

Any extension cord used with this machine must be in good condition and contain a ground wire and matching plug/receptacle. Additionally, it must meet the following size requirements:

Minimum Gauge Size ...........................16 AWG Maximum Length (Shorter is Better).......50 ft.

-10 Model T27400 (Mfd. Since 02/15)

SECTION 3: SETUP

This machine presents serious injury hazards to untrained users. Read through this entire manu al to become familiar with the controls and opera tions before starting the machine!

Wear safety glasses during the entire setup process!

This machine and its components are very heavy. Get lifting help or use power lifting equip ment such as a forklift to move heavy items.

Children and visitors may be seriously injured if unsuper vised around this machine. Lock entrances to the shop or disable start switch or power connection to prevent unsupervised use.

Needed for Setup

The following items are needed, but not included, for the setup/assembly of this machine.

• • •

Description Qty

• Safety Glasses (for each person) ............... 1 • Solvent/Cleaner .......................................... 1 Shop Rags .................................................. 1 Brass Hammer ........................................... 1 Another Person .......................................... 1

Unpacking

Your machine was carefully packaged for safe transportation. Remove the packaging materials from around your machine and inspect it. If you discover any damage, please call us immediately at (570) 546-9663 for advice. Save the containers and all packing materials for possible inspection by the carrier or its agent.

Otherwise, filing a freight claim can be difficult.

When you are completely satisfied with the condi tion of your shipment, inventory the contents.

SUFFOCATION HAZARD!

Keep children and pets away from plastic bags or packing materials shipped with this machine. Discard immediately.

-11 Model T27400 (Mfd. Since 02/15)

Inventory

The following is a list of items shipped with your machine. Before beginning setup, lay these items out and inventory them.

If any non-proprietary parts are missing (e.g. a nut or a washer), we will gladly replace them; or for the sake of expediency, replacements can be obtained at your local hardware store.

Small Item Inventory (Figure 2) Qty

A. Open-Ended Wrench 8/10mm .................... 1 B. Open-Ended Wrench 12/14mm .................. 1 C. Open-Ended Wrench 17/19mm .................. 1 D. Open-Ended Wrench 24/27mm .................. 1 E. Internal Spindle .......................................... 1 F. Wheel Dresser Tool w/Dresser Rod ........... 1 G. Hex Wrenches 4, 5, 8mm ..................... 1/Ea.

H. Toolbox ....................................................... 1 I. Flat Belt 22 x 670mm ................................. 1 J. Phillips Screwdriver #2 ............................... 1 F H E G D C J B A Figure 2. Model T27400 inventory.

I

Cleanup

The unpainted surfaces of your machine are coated with a heavy-duty rust preventative that prevents corrosion during shipment and storage. This rust preventative works extremely well, but it will take a little time to clean.

Be patient and do a thorough job cleaning your machine. The time you spend doing this now will give you a better appreciation for the proper care of your machine's unpainted surfaces.

There are many ways to remove this rust preven tative, but the following steps work well in a wide variety of situations. Always follow the manufac turer’s instructions with any cleaning product you use and make sure you work in a well-ventilated area to minimize exposure to toxic fumes.

Before cleaning, gather the following:

• Disposable rags • Cleaner/degreaser (WD•40 works well) • • Safety glasses & disposable gloves Plastic paint scraper (optional)

Basic steps for removing rust preventative:

1. Put on safety glasses.

2. Coat the rust preventative with a liberal amount of cleaner/degreaser, then let it soak for 5–10 minutes.

3. Wipe off the surfaces. If your cleaner/degreas er is effective, the rust preventative will wipe off easily. If you have a plastic paint scraper, scrape off as much as you can first, then wipe off the rest with the rag.

4. Repeat Steps 2–3 as necessary until clean, then coat all unpainted surfaces with a quality metal protectant to prevent rust.

Gasoline and petroleum products have low flash points and can explode or cause fire if used to clean machinery. Avoid using these products to clean machiner y.

Many cleaning solvents are toxic if inhaled. Only work in a well-ventilated area.

NOTICE

Avoid chlorine-based solvents, such as acetone or brake parts cleaner, that may damage painted surfaces. Avoid chlorine-based solvents, such as acetone or brake parts cleaner, that may damage painted surfaces.

-12 Model T27400 (Mfd. Since 02/15)

Lathe Requirements

The Model T27400 is designed to fit on metal lathes with a 12"–22" swing and a 1" diameter tool post.

IMPORTANT: Although the Model T27400 will fit on lathes meeting the size requirements specified above, this does not imply or guarantee that it will allow enough clearance to work with the full swing of the installed lathe. Once installed, the maximum possible workpiece swing allowed is determined by the distance from the tool post centerline (with cross slide positioned fully backward) to the lathe spindle centerline, minus the required installation space for the tool post grinder (approximately 7").

External Wheel Clearance

The distance between the tool post centerline and the outside grinding surface of a new 6" external wheel is approximately 7" when the grinder is installed, as illustrated in Figure 3. Ensure that your compound slide can safely accommodate this distance from the workpiece prior to powering machine. Smaller lathes may require additional compound slide adjustment, or require small diameter workpieces.

Tool Post Height Tension Bolt Guard External Wheel Lathe Spindle Centerline Workpiece

Tool Post Size

The maximum tool post diameter the grinder can accommodate is 1". If the diameter of your tool post does not allow you to secure the grinder to the compound slide without side-to-side move ment, make a bushing for the tool post that will keep the grinder secured in place when the tool post nut is fully tightened down.

Note: The tool post grinder mounting hole clear-

ance may not allow for the lathe's tool post lever to rotate fully. A new tool post nut and washer combi nation may be required to secure the grinder.

Centerline Alignment

When using an external grinding wheel, the cen terline of the grinder spindle should be approxi mately the same height as the lathe centerline for proper contact with the spinning workpiece. The grinder spindle centerline is adjustable from 1 5 ⁄ 8 "–2 1 ⁄ 8 " above the top of the lathe's compound slide. Measure the height to the lathe centerline from the top of the compound slide (distance A illustrated in Figure 3) to ensure it is within this range. Most lathe centerlines will be within the adjustable range. If not, re-adjust the compound slide and place the external wheel as close to workpiece centerline as possible.

Once the grinder centerline is adjusted, tighten the height tension bolt and nut to secure the dove tail in place.

IMPORTANT: You must adjust and retighten the belt any time the centerline adjustment is changed (see Tensioning/Changing Belts on Page 20).

A

Approx. 7" Lathe Compound Slide Figure 3. External wheel alignment.

Model T27400 (Mfd. Since 02/15) -13-

Mounting on Tool Post

The T27400 mounts directly to the tool post on the compound slide of the lathe. On small lathes, ensure proper workpiece clearance by mounting the grinder before attaching a workpiece to the lathe chuck.

To mount grinder on the lathe tool post:

1. DISCONNECT LATHE FROM POWER!

2. Remove tool post nut (or lever) from lathe, and remove tool holder or any other tool hardware from tool post stud.

3. Rotate compound slide parallel to lathe bedway, then tighten rotation locks on slide.

4. Place grinder over tool post on compound slide, and position it so grinding wheel faces lathe centerline, as shown in Figure 4.

Unexpected movement of grinder on tool post could cause grinding wheel to break apart and strike operator or bystanders with great force. Always make sure grinder is firmly secured to tool post so there is no side-to-side or up-and-down movement.

5. Use tool post nut to firmly secure grinder in place, as shown in Figure 5.

Note: Tool post mounting hole of grinder

will accept tool post up to 1" in diameter. However, if diameter or height of your tool post allows for side-to-side or up-and-down movement of grinder when nut is fully tight ened, you will need to fabricate a custom washer for tool post.

Tool Post Nut Figure 4. Grinder correctly mounted to lathe compound slide.

Figure 5. Tool post lock nut and example of a custom washer.

Ensure power cord is positioned away from moving parts and does not pose an entanglement hazard.

-14 Model T27400 (Mfd. Since 02/15)

Adjusting Grinder Centerline Height

The centerline of the external grinding wheel must closely align with the centerline of the workpiece to avoid damage to the wheel guard or the workpiece (see from 1 5 ⁄ in place.

8 " to 2 1 ⁄ 8 Figure 3 on Page 13). The tool post grinder centerline height can be adjusted " above the top of the lathe's com pound slide. Once the grinder centerline height is properly adjusted, the height tension bolt and nut must be tightened to secure the centerline height

Tools Needed Qty

Wrench 18mm ................................................... 1 Hex Wrench 8mm .............................................. 1

To adjust tool post grinder centerline height:

1. DISCONNECT LATHE AND GRINDER FROM POWER!

2. Loosen hex bolt on left side of spindle hous ing (see Figure 6).

3. Rotate elevation bolt (see Figure 6) as nec essary to align grinder spindle centerline with lathe spindle centerline. Rotate bolt counter clockwise to raise grinder spindle or clock wise to lower it. Note: Numerical increments on elevation

wheel are for your reference only and do not indicate actual height of spindle.

Elevation Bolt

Test Run

Once assembly is complete, test run the machine to ensure it is properly connected to power and safety components are functioning properly.

If you find an unusual problem during the test run, immediately stop the machine, disconnect it from power, and fix the problem BEFORE operating the machine again. The Troubleshooting table in the SERVICE section of this manual can help.

Serious injury or death can result from using this machine BEFORE understanding its controls and related safety information. DO NOT operate, or allow others to operate, machine until the information is understood. DO NOT start machine until all preceding setup instructions have been performed. Operating an improperly set up machine may result in malfunction or unexpect ed results that can lead to serious injury, death, or machine/property damage.

To test run machine:

1. Clear all setup tools away from machine.

2. Connect machine to power supply.

3. Turn machine ON, verify motor operation, and then turn machine OFF.

The motor should run smoothly and without unusual problems or noises.

Hex Bolt Figure 6. Adjusting spindle centerline height.

4. When you are satisfied with adjustment, re tighten hex bolt to secure setting.

Model T27400 (Mfd. Since 02/15) -15-

operations

SECTION 4: OPERATIONS

Operation Overview

The purpose of this overview is to provide the nov ice machine operator with a basic understanding of how the machine is used during operation, so the machine controls/components discussed later in this manual are easier to understand.

Due to the generic nature of this overview, it is not intended to be an instructional guide. To learn more about specific operations, read this entire manual and seek additional training from expe rienced machine operators, and do additional research outside of this manual by reading "how to" books, trade magazines, or websites.

To reduce your risk of serious injury, read this entire manual BEFORE using machine.

To complete a typical operation, the operator does the following:

1. Examines workpiece to make sure it is suit able for grinding.

2. Correctly installs desired grinding wheel for operation.

3. Properly secures workpiece in lathe.

4. Makes sure tool post grinder is setup cor rectly.

5. Turns lathe ON.

6. If necessary, begins coolant flow to workpiece.

7. Turns tool post grinder ON.

8. Using lathe slide controls, slowly feeds grind ing wheel into and along surface of workpiece.

9. When operation is complete, turns lathe and grinder OFF.

To reduce risk of eye or face injury from flying chips, always wear approved safety glasses, face shield and respirator when operating this machine.

If you are not experienced with this type of machine, WE STRONGLY RECOMMEND that you seek additional training outside of this manual. Read books/magazines or get formal training before beginning any proj ects. Regardless of the content in this sec tion, Grizzly Industrial will not be held liable for accidents caused by lack of training.

Keep hair, clothing, and jewelry away from mov ing parts at all times. Entanglement can result in death, amputation, or severe crushing injuries!

-16 Model T27400 (Mfd. Since 02/15)

Lathe Rotation

To produce the best results, use a test piece similar to workpiece to verify proper lathe spindle speed settings. Proper lathe and grinder rotation orientation will ensure a cleaner finished product.

Both the lathe and the external grinding wheel should rotate clockwise, as illustrated in to counterclockwise.

Figure 7. When using the internal wheel, set lathe rotation External Wheel Workpiece Internal Wheel Workpiece Figure 7. Correct lathe rotations.

Wheel Care

• • When grinding, the safety of operator and bystand ers depends primarily on the condition of the wheel. A wheel in poor condition could break apart during rotation and injure the operator or nearby bystanders.

Here are some tips to help you avoid breaking the wheel:

• • Always transport, store and handle wheels with care. Wheels may be damaged if they are dropped or if heavy objects are stacked on them.

Select the right grinding wheel for the job. Attempting to use an external wheel for an internal grinding operation, or vice versa, will not work and will increase the risk of personal injury and property damage.

• • • • Only use wheels that are rated for the RPM of the tool grinder.

Mount the wheel properly (see

Installing/

Removing Grinding Wheel on Page 24). Do not abuse the wheel by jamming it into the workpiece with excessive force, or by allowing the workpiece to become overly hot during operation.

Do not store wheels in damp or wet locations.

Do not overtighten the nut when mounting the wheel.

Do not leave the wheel mounted when machine is not in use.

Model T27400 (Mfd. Since 02/15) -17-

Wheel Inspection

DO NOT assume that a wheel is in sound condi tion just because it is new. Often, damage can occur during shipping, with age, or with exposure to moisture. Before installing any grinding wheel, it must always be inspected for damage. A dam aged grinding wheel can fly apart at high speeds, throwing pieces of abrasive at the operator or bystanders with dangerous force. First, do a wheel. Visual Inspection. Look for any cracks, chips, nicks or dents in the surface of the wheel. If you see any of these, DO NOT use the Second, do a Ring Test. This test will give you an indication of any internal damage that may not be obvious during a visual inspection.

A damaged grinding wheel can fly apart and eject chunks of abrasive material with great force, causing serious injury or death. Inspect every grinding wheel before it is mounted. DO NOT use a damaged grinding wheel!

To perform a ring test:

1. Make sure wheel is clean and dry; otherwise, you may get false results.

2. Hang the wheel in the air with a piece of cord or string looped through hole in center. If this is not possible, balance wheel with your fin ger in hole.

STOP Rated 3500 RPM Make sure your grinder is not faster than the rated RPM of this wheel Type-1 Aluminum Oxide 60 Grit Grade L Vitrified Bond WARNING Grinding can be dangerous Visually inspect this wheel for cracks, nicks,chips -18 Figure 8. Ring test tapping locations.

3. At points shown in Figure 8, gently tap grind ing wheel with light, non-metallic device such as handle of screwdriver or a wooden mallet.

4. An undamaged grinding wheel will emit a clear metallic ring or “ping” sound in each of these spots. A damaged wheel will respond with a dull thud that has no clear tone.

5. If you determine from the ring test that the grinding wheel is damaged, DO NOT use it!

Wheel Selection

The Model T27400 accepts Type 1 grinding wheels with a 1 ⁄ 2 "–1" bore. Included with the tool grinder is an aluminum-oxide wheel for grinding HSS. A diamond wheel is also available for grind ing carbide steel (see Accessories on Page 25).

Generally, grinding wheels are marked in a uni form manner by most major manufacturers. Understanding these markings will help you understand the capabilities of various wheels. Always refer to the manufacturer’s grinding rec ommendations when selecting a wheel for your project.

The basic format for wheel numbering is: Prefix

Type 1

Abrasive Type

A

Grit Size

60

Grade Type

L

Bond Type

V The Prefix is the manufacturer’s designation for a particular type of grinding wheel.

The Grit Size refers to the size of the abrasive grain in the wheel. The smaller the number, the coarser the wheel. Grit sizes range from 8, which is a very coarse grit used for roughing, to 220, which is generally for fine finish work.

Grade is an indication of the hardness of the wheel—“A” being the softest and “Z” being the hardest.

Bond Type refers to the type of bonding material used to hold the abrasive material. Most general purpose wheels have a “V” indicating vitrified clay, which provides high strength and good porosity.

Model T27400 (Mfd. Since 02/15)

Wheel Dressing

With use, the surface of the grinding wheel will fill with metal residue and grit. When this happens, the wheel needs to be cleaned or “dressed.” The goal of dressing the wheel is to remove the contaminants and make the grinding surface even and flat to ensure good grinding results. A diamond dressing tool or "dresser" has been included with the T27400 for this purpose.

Tools Needed Qty

Hex Wrench 8mm .............................................. 1 Hex Wrench 2.5mm ........................................... 1

To use the included diamond dresser:

1. DISCONNECT LATHE AND GRINDER FROM POWER!

2. Using a workpiece or a section of bar stock as a stationary mounting location, clamp the tool holder so the dresser is perpendicular to the grinding surface of the wheel (see

Figure

9).

Note:

need to be cut to the appropriate length to fit your specific lathe.

Tool Holder Diamond Dresser Figure 9. Tool holder clamped on a piece of bar stock so dresser is perpendicular to grinding wheel.

Grinding wheels can quickly remove a lot of skin. Make sure the dresser and tool holder are firmly secured in place, and keep your hands a safe distance away from grinding wheel during operation.

3. Secure the dresser into the tool holder by tightening the set screw on tool holder. 4. Ensure tip of dresser is at or below the grind ing wheel centerline (see Figure 10). Adjust tool post grinder elevation as needed (see Adjusting Grinder Spindle Centerline on Page 15).

External Wheel Workpiece Lathe Spindle Centerline Diamond Dresser Tool Holder Figure 10. Diamond dresser just below centerline of grinding wheel.

5. Position grinding wheel so dresser is to one side of wheel surface and slightly touching it. 6. Connect grinder to power and turn it ON, then slowly move wheel back-and-forth across dresser, making multiple light passes until you are satisfied with wheel surface condi tion.

Note: Several light passes across the dress-

er will produce the best results, with the least amount of wear to the wheel or dresser.

Model T27400 (Mfd. Since 02/15) -19-

Tensioning/ Changing Belts

The Model T27400 uses a flat belt for the internal grinding wheel and a V-belt for the external grind ing wheel. Proper belt alignment is essential for belt longevity and the highest-quality workpiece finish.

Tools Needed Qty

Wrench 27mm ................................................... 1 Hex Wrench 5mm .............................................. 1 Hex Wrench 8mm .............................................. 1

To properly tension belt:

1. DISCONNECT LATHE AND GRINDER FROM POWER!

2. Remove belt guard to fully expose belt.

3. Loosen hex nut beneath slide mount body (see Figure 11).

4. Rotate belt-tensioning cap screw (see Figure 11) to move motor assembly toward grinder spindle. Roll V-belt off pulleys and store it in a dry, protected area for later use.

6. Place belt onto pulleys, as shown in Figure 12.

Note: Use belt-tensioning cap screw to adjust

belt tension just enough so belt stays on pul leys when they are rotated.

External Motor Pulley V-Belt External Spindle Pulley Quill Cap Screws Figure 12. Aligning the internal spindle and motor pulleys.

7. Rotate motor pulley by hand several times to make sure belt is tracking properly in middle of each pulley, then re-tighten both cap screws to lock quill/spindle in place.

Belt- Tensioning Cap Screw Hex Nut Figure 11. Belt tensioning components.

5. Loosen both cap screws shown in Figure 12 to secure quill/spindle, then align quill/spindle with desired motor pulley.

-20 Model T27400 (Mfd. Since 02/15)

8. Rotate belt-tensioning cap screw to move the motor assembly back until belt is properly tensioned.

Note: For V-belt, proper amount of tension

is reached when belt deflects approximately 1 ⁄ 2 " with moderate pressure applied midway between the pulleys, as shown in mately 3 ⁄ 8 ".

Figure 13.

For flat belt, deflection should be approxi-

Installing Internal Wheel Spindle

The internal grinding wheel is used on the inside surfaces of a concentric workpiece. To configure the grinder for this type of operation, you will need to remove the external wheel spindle (if installed), install the internal wheel spindle, and change the spindle pulley and belt.

V-Belt:

Approx. 1 / 2 " Deflection Motor Pulley

Flat Belt:

Approx. 3 / 8 " Deflection Spindle Pulley Figure 13. Checking for correct V-belt tension.

9. When you are satisfied with belt tension, tighten hex nut loosened in Step 3 (see Figure 11), and re-install belt guard.

Belt and pulleys represent serious entangle ment hazards! ALWAYS ensure belt guard is properly installed before connecting to power.

Figure 14. Internal wheel spindle.

Tools Needed Qty

Hex Wrench 4mm .............................................. 1 Hex Wrench 5mm .............................................. 1 Hex Wrench 8mm .............................................. 1 Wrench 14mm ................................................... 1 Wrench 24mm ................................................... 1 Phillips Screwdriver #2 ...................................... 1 Standard Screwdriver #2 ................................... 1

To install internal wheel assembly:

1. DISCONNECT LATHE AND GRINDER FROM POWER!

2. Remove belt guard and external wheel (see Installing External Wheel on Page 24).

Note:

dry, protected area (away from extreme tem peratures) for later use.

3. Loosen and remove belt by turning belt tensioning cap screw counterclockwise.

Model T27400 (Mfd. Since 02/15) -21-

4. Remove hex nut (see Figure 15) securing external spindle pulley, and then remove pul ley.

Note:

Figure 15)

screw has left-hand threads.

External Motor Pulley Belt Tensioning Cap Screw Hex Nut External Spindle Pulley Figure 15. Belt guard removed.

5. Loosen wheel guard cap screw and remove guard from spindle.

6. Remove (2) cap screws securing spindle (see Figure 12 on Page 20), allowing assem bly to slide free of tool grinder housing.

7. Remove external wheel spindle and install internal wheel spindle.

A standard screwdriver may be needed to lightly separate gap in tool grinder housing allowing spindle to slide free.

Tool Grinder Housing Internal Wheel Wheel Guard Internal Wheel Nut ley. Refer to Internal Spindle Flats Figure 16. Internal grinding wheel installed.

8. Align grinding wheel spindle with motor pul Tensioning/Changing Belts on Page 20 for belt alignment and tensioning.

-22 Model T27400 (Mfd. Since 02/15)

Installing External Wheel Spindle

The external grinding wheel is used to grind the outside surfaces of a concentric workpiece. To configure the grinder for this type of operation, you will need to remove the internal wheel spindle (if installed), install the external wheel spindle, and change the spindle belt.

Note: The T27400 is shipped with a factory-

installed external grinding wheel. Steps required for installing the external wheel are similar to the steps for installing the internal wheel. Use the photos in the Internal Wheel subsection begin ning on Page 21 for a visual reference when fol lowing this procedure.

Tools Needed Qty

Hex Wrench 4mm .............................................. 1 Hex Wrench 5mm .............................................. 1 Hex Wrench 8mm .............................................. 1 Wrench 14mm ................................................... 1 Wrench 24mm ................................................... 1 Phillips Screwdriver #2 ...................................... 1 Standard Screwdriver #2 ................................... 1

To install external wheel assembly:

1. DISCONNECT LATHE AND GRINDER FROM POWER!

2. Remove belt guard, then remove flat belt from pulley (see Tensioning/Changing Belts on Page 20).

3. Loosen cap screws located on front of tool grinder housing (see housing.

Figure 12), allowing internal spindle to slide free of tool grinder

Note:

to lightly separate gap in tool grinder housing allowing quill/spindle assembly to slide free.

4. Remove internal wheel spindle assembly, and install external wheel spindle.

5. Install external spindle pulley, using a 14mm wrench on the spindle flats to keep spindle from turning while installing.

Note:

hand threads.

External Motor Pulley External Spindle Pulley Figure 17. External motor and spindle pulleys.

6. Align external spindle pulley with motor pul ley, and refer to Tensioning/Changing Belts on Page 20 for belt alignment and tensioning. 7. Re-tighten cap screws on front of tool grinder housing.

8. Install external wheel, and re-attach external wheel guard and guard cover.

Model T27400 (Mfd. Since 02/15) -23-

Installing External Wheel

Inspect the condition of any grinding wheel prior to installation. Perform a ring test on external grind ing wheels, as described in Wheel Inspection (see Page 18), to determine wheel condition. If external wheel is damaged, or is worn down to 1 ⁄ 2 its original diameter, replace the wheel (refer to Wheel Selection on Page 18).

Tools Needed Qty

Wrench 24mm ................................................... 1 Wrench 14mm ................................................... 1 Wrench 10mm ................................................... 1

To install/remove external grinding wheel:

1. DISCONNECT LATHE AND GRINDER FROM POWER!

2. Remove belt guard to access spindle.

3. Remove cap screws securing external wheel guard cover to expose wheel spindle nut (see Figure 12).

4. Place a wrench on spindle flats, then unthread and remove external wheel spindle nut and washers, as shown in Figure 18.

Spindle Flats Wheel Spindle Nut Wheel Guard Figure 18. Removing external wheel spindle nut.

5. Replace external grinding wheel and re-install spacer and wheel spindle nut. Re-install belt guard.

-24 Model T27400 (Mfd. Since 02/15)

ACCESSORIES

SECTION 5: ACCESSORIES

Installing unapproved accessories may cause machine to malfunction, resulting in serious personal injury or machine damage. To reduce this risk, only install accessories recommended for this machine by Grizzly.

NOTICE

Refer to our website or latest catalog for additional recommended accessories.

G7408—Type-1 6" x 3 ⁄ 4 " A24-Grit Wheel G7409—Type-1 6" x 3 ⁄ 4 " A36-Grit Wheel G7410—Type-1 6" x 3 ⁄ 4 " A46-Grit Wheel G7411—Type-1 6" x 3 ⁄ 4 " A60-Grit Wheel

Replacement grinding wheels for the T27400 are available in 24-, 36-, 46-, and 60-grit, and feature nested bushings adjustable to fit 1 ⁄ 2 ", 5 ⁄ 8 ", 3 ⁄ 4 ", and 1" spindles.

G7411

H2499—Small Half-Mask Respirator H3631—Medium Half-Mask Respirator H3632—Large Half-Mask Respirator H3635—Cartridge Filter Pair P100

If you work around dust everyday, a half-mask respirator can be a lifesaver. Also compatible with safety glasses!

H3632 H3635 Figure 20. Half-mask respirator with disposable cartridge filters.

G5562—SLIPIT ® 1 Qt. Gel G5563—SLIPIT ® 12 Ounce Spray G2871—Boeshield ® T-9 12 Ounce Spray G2870—Boeshield ® T-9 4 Ounce Spray H3788—G96 ® Gun Treatment 12 Ounce Spray H3789—G96 ® Gun Treatment 4.5 Ounce Spray

G7408 Figure 19. Replacement external grinding wheels for the Model T27400 Tool Post Grinder.

Figure 21. Recommended products for protect ing unpainted cast iron/steel parts on machinery.

-25 Model T27400 (Mfd. Since 02/15)

SECTION 6: MAINTENANCE

To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments, maintenance, or service.

Schedule

For optimum performance from your machine, follow this maintenance schedule and refer to any specific instructions given in this section.

• • •

Daily Maintenance:

• Check/retighten loose mounting bolts.

• Check grinding wheels for damage (see Page 18).

Check/repair worn or damaged wires.

Clean and lubricate machine.

Resolve any other unsafe condition.

Cleaning & Protecting

Cleaning the Model T27400 is relatively easy. Vacuum dust and grit, and wipe off the remaining grit with a dry cloth.

Protect the unpainted cast iron surfaces and keep them rust-free with regular applications of products like G96 ® Gun Treatment, SLIPIT ® , or Boeshield ® T-9 (see Section 5: Accessories on Page 25 for more details).

Lathe Bedway

The grinding operation generates extremely abra sive dust particles that will wear the exposed metal-to-metal moving parts of the lathe. When you are finished with the grinding operation and have removed the Model T27400 from your lathe, clean and relubricate the exposed surfaces.

NOTICE

To avoid damaging wear to the exposed lathe metal-to-metal moving lathe parts, thoroughly clean and re-lubricate them after grinding operations.

Lubrication

The bearings of the Model T27400 are factory lubricated and sealed, and they require no atten tion unless they need replacement.

Remove the belt from the spindle pulley, then loosen the two cap screws that secure the quill (see Figure 22). Move the quill back-and-forth and clean away any debris and grit, then apply a thin coat of light machine oil to the outside surface of the quill.

Quill Cap Screws -26 Figure 22. Cap screws to loosen when lubricating the quill.

Model T27400 (Mfd. Since 02/15)

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical Support at (570) 546-9663.

Troubleshooting Motor & Electrical

Symptom Machine does not start or a breaker trips.

Machine stalls or is underpowered.

Machine has vibration or noisy operation.

Possible Cause 1. Power supply switched OFF or at fault.

2. Wall circuit breaker tripped. 3. Plug/receptacle at fault/wired wrong. 4. Motor connection wired wrong.

5. Wiring open/has high resistance.

6. Motor ON/OFF switch at fault.

7. Motor at fault.

1. Feed rate/lathe speed too fast.

2. Belt slipping.

3. Motor overheated.

4. Motor wired incorrectly.

5. Plug/receptacle at fault.

6. Pulley slipping on shaft/spindle.

7. Motor bearings at fault.

8. Machine undersized for task.

9. Motor at fault.

1. Grinder incorrectly mounted to lathe.

2. Motor or component loose.

3. External wheel contacting guard.

4. Belt worn or loose.

5. Grinding wheel arbor hole not round.

6. Pulley loose.

7. Motor mount loose/broken.

8. Motor bearings at fault.

9. Motor shaft bent.

Possible Solution 1. Ensure power supply is ON/has correct voltage.

2. Ensure circuit size is correct/replace weak breaker.

3. Test for good contacts; correct the wiring.

4. Correct motor wiring connections ( Page 30).

5. Check/fix broken, disconnected, or corroded wires. 6. Replace switch.

7. Test/repair/replace.

1. Decrease feed rate/lathe speed.

2. Tension/replace belt; ensure pulleys are aligned.

3. Clean motor, let cool, and reduce workload.

4. Wire motor correctly ( Page 30).

5. Test for good contacts/correct wiring.

6. Replace loose pulley/shaft/spindle.

7. Test/repair/replace.

8. Use new grinding wheel; reduce the feed rate.

9. Test/repair/replace.

1. Use bushing(s); re-tighten tool post nut.

2. Inspect/replace damaged bolts/nuts, and re-tighten with thread locking fluid.

3. Properly align spindle pulley with motor pulley; make sure external wheel does not contact guard.

4. Inspect/replace belt.

5. Dress/replace grinding wheel.

6. Realign/replace shaft, pulley, setscrew, and key.

7. Tighten/replace.

8. Test by rotating shaft; rotational grinding/loose shaft requires bearing replacement.

9. Test with dial indicator and replace motor.

-27 Model T27400 (Mfd. Since 02/15)

Operation

Symptom Wavy pattern on workpiece surface.

Possible Cause 1. Machine vibrating.

2. Workpiece loose in clamping device.

Lines on workpiece surface.

Burned spots or cracks in workpiece.

1. Workpiece loose in clamping device.

1. Feed rate too slow.

2. Depth of cut too great.

3. Workpiece overheating.

Wheel dulls quickly, grit falls off.

Wheel clogs and workpiece shows burn marks.

Workpiece is ground unevenly.

4. Improper grinding wheel for task.

1. Depth of cut too great.

2. Wheel exposed to moisture.

3. Improper grinding wheel for task.

4. Defective wheel bonding.

1. Feed rate too slow.

2. Workpiece incorrect material.

3. Improper grinding wheel for task.

1. Workpiece not properly clamped.

2. Wheel surface worn or uneven.

3. Wheel is damaged.

Possible Solution 1. Shim/tighten mounting hardware.

2. Correctly re-clamp the workpiece.

1. Correctly re-clamp the workpiece.

1. Increase feed rate.

2. Reduce depth of cut; take multiple light passes.

3. Grind in short durations and allow workpiece to cool in between.

4. Use correct grinding wheel for task ( Page 18).

1. Reduce depth of cut; take multiple light passes.

2. Store wheel away from moisture; replace wheel.

3. Use correct grinding wheel for task ( Page 18).

4. Replace wheel.

1. Increase feed rate.

2. Grind ferrous materials only.

3. Use correct grinding wheel for task ( Page 18).

1. Properly re-clamp workpiece.

2. Dress wheel surface. Replace wheel if necessary.

3. Replace wheel; check new wheel before using ( Page 18).

-28 Model T27400 (Mfd. Since 02/15)

machine

SECTION 8: WIRING

These pages are current at the time of printing. However, in the spirit of improvement, we may make chang es to the electrical systems of future machines. Compare the manufacture date of your machine to the one stated in this manual, and study this section carefully.

If there are differences between your machine and what is shown in this section, call Technical Support at (570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. An updated wiring diagram may be available. Note: Please gather the serial number and manufacture date of your

machine before calling. This information can be found on the main machine label.

Wiring Safety Instructions

SHOCK HAZARD. Working on wiring that is con nected to a power source is extremely dangerous. Touching electrified parts will result in personal injury including but not limited to severe burns, electrocution, or death. Disconnect the power from the machine before servicing electrical com ponents!

WIRE/COMPONENT DAMAGE. Damaged wires or components increase the risk of serious per sonal injury, fire, or machine damage. If you notice that any wires or components are damaged while performing a wiring task, replace those wires or components.

MODIFICATIONS. Modifying the wiring beyond what is shown in the diagram may lead to unpre dictable results, including serious injury or fire. This includes the installation of unapproved after market parts.

MOTOR WIRING. The motor wiring shown in these diagrams is current at the time of printing but may not match your machine. If you find this to be the case, use the wiring diagram inside the motor junction box.

WIRE CONNECTIONS. All connections must be tight to prevent wires from loosening during machine operation. Double-check all wires dis connected or connected during any wiring task to ensure tight connections.

CAPACITORS/INVERTERS. Some capacitors and power inverters store an electrical charge for up to 10 minutes after being disconnected from the power source. To reduce the risk of being shocked, wait at least this long before working on capacitors.

CIRCUIT REQUIREMENTS. You MUST follow the requirements at the beginning of this manual when connecting your machine to a power source. EXPERIENCING DIFFICULTIES. If you are expe riencing difficulties understanding the information included in this section, contact our Technical Support at (570) 546-9663.

The photos and diagrams included in this section are best viewed in color. You can view these pages in color at www.grizzly.com.

Model T27400 (Mfd. Since 02/15) -29-

Junction Box (Viewed from Top)

Run Capacitor CBB6 12MFD 450VAC Ground

T27400 Wiring

ON/OFF Switch KTN KCD2 16A 250VAC 220V 1-PH MOTOR

Junction Box Cover

(Viewed from Bottom) Figure 25. ON/OFF switch.

Hot 220 VAC Hot

G

Ground 6-15 Plug (As Recommended)

ON/OFF Switch Figure 23. Run capacitor.

Run Capacitor (Inside) Junction Box Cover Motor Figure 24. T27400 component locations.

Figure 26. T27400 wiring.

-30-

READ ELECTRICAL SAFETY ON PAGE 29!

Model T27400 (Mfg. Since 02/15)

SECTION 9: PARTS

Main Breakdown

1-3 1-2 1-4 1-5 1-1 1-6 65 70 69 6 1 66 63 15 5 67 64 63 15 10 11 8 7 14 8 12 18 22 60 61 20 16 21 15 22 72 28 29 30 31 24 26 71 27 33 73 34 35 36 37 39 74 46 73A 4 13 23 24 68 28 25 17 29 62 19 42 30 31 11 66 2 59 63 15 3 41 44 33 32 71 38 47 43 45 34 35 36 37 39 32A -31 Model T27400 (Mfd. Since 02/15)

Main Parts List

REF PART #

1 1-1 1-2 1-3 1-4 1-5 1-6 2 3 4 5 6 7 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

DESCRIPTION

PT27400001 MOTOR 3/4HP 220V 1-PH PT27400001-1 MOTOR FAN PT27400001-2 MOTOR FAN COVER PT27400001-3 R CAPACITOR 12M 450V 2-3/8 X 1-5/8 PT27400001-4 BALL BEARING 6202ZZ (F) PT27400001-5 BALL BEARING 6203ZZ (R) PT27400001-6 MOTOR CONTROL BOX PT27400002 PT27400003 PT27400004 PT27400005 PT27400006 PT27400007 PT27400008 PT27400010 PT27400011 HEX BOLT M8-1.25 X 20 FLAT WASHER 8MM ON/OFF ROCKER SWITCH KCD2 250V MOTOR PULLEY INNER BELT GUARD CAP SCREW M6-1 X 25 HEX NUT M6-1 OUTER BELT GUARD PHLP HD SCR M4-.7 X 6 PT27400012 PT27400013 PT27400014 PT27400015 PT27400016 PT27400017 PT27400018 PT27400019 PT27400020 PT27400021 PT27400022 PT27400023 PT27400024 PT27400025 PT27400026 PT27400027 PT27400028 PT27400029 PT27400030 BELT TENSIONING SHAFT M10-1.5

CUT WASHER 18MM MOTOR BASE FLAT WASHER 5MM CAP SCREW M5-.8 X 10 SPINDLE ELEVATION BOLT M10-1.5

CAP SCREW M5-.8 X 10 BASE CASTING MOTOR ADJUSTING NUT HEX BOLT M12-1.75 X 120 FLAT WASHER 12MM HEX NUT M18-1.5

HEX NUT M10-1.5 LH EXTERNAL SPINDLE PULLEY QUILL HOUSING CAP SCREW M6-1 X 16 QUILL END CAP (FRONT) ANGULAR CONTACT BEARING 7203 ANGULAR CONTACT BEARING 7203

REF PART # DESCRIPTION

37 38 39 41 42 43 44 45 46 31 32 PT27400031 PT27400032 WAVY WASHER 40MM EXTERNAL SPINDLE 32A PT27400032A EXTERNAL SPINDLE ASSEMBLY 33 34 35 36 PT27400033 PT27400034 PT27400035 PT27400036 QUILL COVER WAVY WASHER 40MM ANGULAR CONTACT BEARING 7203 ANGULAR CONTACT BEARING 7203 PT27400037 PT27400038 PT27400039 PT27400041 PT27400042 PT27400043 PT27400044 PT27400045 PT27400046 QUILL LOCK COLLAR V-BELT M26 3L260 QUILL END CAP (REAR) CAP SCREW M5-.8 X 16 CAP SCREW M6-1 X 16 GRINDING WHEEL TYPE-1 6" X 3/4" X 5/8" A60 INNER WHEEL HUB OUTER WHEEL HUB HEX NUT M16-1.5

47 59 60 61 62 63 64 65 PT27400047 PT27400059 PT27400060 PT27400061 PT27400062 PT27400063 PT27400064 PT27400065 WHEEL GUARD PLATE LOCK WASHER 8MM LOCK WASHER 12MM HEX NUT M12-1.75

POWER CORD 16G 3W 66" 6-15P CAP SCREW M5-.8 X 20 STRAIN RELIEF PG19 TYPE-3 PHLP HD SCR M4-.7 X 15 66 67 68 69 70 71 72 PT27400071 PT27400072 FLAT WASHER 7MM FLAT BELT PULLEY 73 PT27400073 INTERNAL SPINDLE 73A PT27400073A INTERNAL SPINDLE ASSEMBLY 74 PT27400066 PT27400067 PT27400068 PT27400069 PT27400070 PT27400074 FLAT WASHER 4MM PHLP HD SCR M4-.7 X 6 EXTERNAL WHEEL GUARD HEX NUT M4-.7

PLASTIC SPACER INT GRINDER WHEEL 3/4" X 3/4" X 1/4" A60 -32 Model T27400 (Mfd. Since 02/15)

Accessories

58 56 55 57 48-2 48 48-1 53 52 51 50

REF PART # DESCRIPTION

48 PT27400048 DRESSER TOOL ASSEMBLY 48-1 PT27400048-1 DIAMOND DRESSER 48-2 PT27400048-2 CAP SCREW M10-1.5 X 90 49 PT27400049 FLAT BELT 22 X 670MM 50 51 52 PT27400050 PT27400051 PT27400052 WRENCH 8 X 10MM OPEN-ENDS WRENCH 12 X 14MM OPEN-ENDS WRENCH 17 X 19MM OPEN-ENDS 54 49

REF PART #

53 54 55 56 57 58 PT27400053 PT27400054 PT27400055 PT27400056 PT27400057 PT27400058

DESCRIPTION

WRENCH 24 X 27MM OPEN-ENDS SCREWDRIVER PHILLIPS #2 HEX WRENCH 4MM HEX WRENCH 5MM HEX WRENCH 8MM TOOLBOX Model T27400 (Mfd. Since 02/15) -33-

77

Label Placement

78 76 75 81 80 79

REF PART #

75 76 77 78

DESCRIPTION

PT27400075 MACHINE ID LABEL PT27400076 EYE/LUNG INJURY HAZARD LABEL PT27400077 READ MANUAL LABEL PT27400078 ELECTRICITY LABEL

REF PART #

79 80 81

DESCRIPTION

PT27400079 GRIZZLY GREEN TOUCH-UP PAINT PT27400080 DISCONNECT POWER LABEL PT27400081 ENTANGLEMENT WARNING LABEL

Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine MUST maintain the original location and readability of the labels on the machine. If any label is removed or becomes unreadable, REPLACE that label before using the machine again. Contact Grizzly at (800) 523-4777 or www.grizzly.com to order new labels.

-34 Model T27400 (Mfd. Since 02/15)

WARRANTY CARD

Name _____________________________________________________________________________ Street _____________________________________________________________________________ City _______________________ State _________________________ Zip _____________________ Phone # ____________________ Email _________________________________________________ Model # ____________________ Order # _______________________ Serial # __________________

The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop better products and services.

Of course, all information is strictly confidential.

1. How did you learn about us?

____ Advertisement ____ Card Deck ____ Friend ____ Website ____ Catalog ____ Other: 2. Which of the following magazines do you subscribe to?

____ Cabinetmaker & FDM ____ Family Handyman ____ Hand Loader ____ Handy ____ Home Shop Machinist ____ Journal of Light Cont.

____ Live Steam ____ Model Airplane News ____ Old House Journal ____ Popular Mechanics ____ Popular Science ____ Popular Woodworking ____ Precision Shooter ____ Projects in Metal ____ RC Modeler ____ Rifle ____ Shop Notes ____ Shotgun News ____ Today’s Homeowner ____ Wood 3. What is your annual household income?

____ $20,000-$29,000 ____ $30,000-$39,000 ____ $50,000-$59,000 ____ $60,000-$69,000 ____ Wooden Boat ____ Woodshop News ____ Woodsmith ____ Woodwork ____ Woodworker West ____ Woodworker’s Journal ____ Other: ____ $40,000-$49,000 ____ $70,000+ 4. What is your age group?

____ 20-29 ____ 50-59 ____ 30-39 ____ 60-69 ____ 40-49 ____ 70+ 5. How long have you been a woodworker/metalworker?

____ 0-2 Years ____ 2-8 Years ____ 8-20 Years ____ 20+ Years 6. How many of your machines or tools are Grizzly?

____ 0-2 ____ 3-5 ____ 6-9 ____ 10+ 7. Do you think your machine represents a good value? 8. Would you recommend Grizzly Industrial to a friend? _____Yes _____Yes _____No _____No 9. Would you allow us to use your name as a reference for Grizzly customers in your area?

Note: We never use names more than 3 times. _____Yes _____No 10. Comments: _____________________________________________________________________

_________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________

FOLD ALONG DOTTED LINE

GRIZZLY INDUSTRIAL, INC.

P.O. BOX 2069 BELLINGHAM, WA 98227-2069

FOLD ALONG DOTTED LINE Send a Grizzly Catalog to a friend: Name_______________________________ Street_______________________________ City______________State______Zip______ TAPE ALONG EDGES--PLEASE DO NOT STAPLE Place Stamp Here

WARRANTY AND RETURNS WARRANTY AND RETURNS

Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty and any and all warranties that may be implied by law, including any merchantability or fitness, for any par ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants. In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.

We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special, or consequential damages arising from the use of our products.

To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the carton. We will not accept any item back without this number. Proof of purchase must accompany the merchandise. The manufacturers reserve the right to change specifications at any time because they constantly strive to achieve better quality equipment. We make every effort to ensure that our products meet high quality and durability standards and we hope you never need to use this warranty.

Please feel free to write or call us if you have any questions about the machine or the manual. Thank you again for your business and continued support. We hope to serve you again soon.

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