Grizzly T28523 Slow-Speed Bench Grinder 1/3 HP Owner Manual

Grizzly T28523 Slow-Speed Bench Grinder 1/3 HP Owner Manual

MODEL T28523 8" SLOW-SPEED BENCH GRINDER

OWNER'S MANUAL

(For models manufactured since 05/19)

COPYRIGHT © MAY, 2019 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.

#RSAL20149 PRINTED IN CHINA V1.05.19

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

Controls & Components ............................................................................................................. 4

Machine Data Sheet ................................................................................................................... 5

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

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

Additional Safety for Grinders .................................................................................................... 8

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

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

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

Inventory ................................................................................................................................... 12

Site Considerations .................................................................................................................. 13 Bench Mounting ....................................................................................................................... 13

Assembly .................................................................................................................................. 14

Test Run ................................................................................................................................... 16

SECTION 4: OPERATIONS ........................................................................................................... 17

Operation Overview.................................................................................................................. 17

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

Wheel Care .............................................................................................................................. 19 Wheel Inspection ...................................................................................................................... 19

Wheel Dressing ........................................................................................................................ 20 Wheel Removal & Installation .................................................................................................. 20

SECTION 5: ACCESSORIES ......................................................................................................... 22

SECTION 6: MAINTENANCE......................................................................................................... 23

Schedule .................................................................................................................................. 23 Grinding Wheels ....................................................................................................................... 23 Cleaning & Protecting .............................................................................................................. 23 Wheel Dressing ........................................................................................................................ 23 Wheel Storage.......................................................................................................................... 23

SECTION 7: SERVICE ................................................................................................................... 24

Troubleshooting ........................................................................................................................ 24

SECTION 8: WIRING ...................................................................................................................... 25

Wiring Safety Instructions ........................................................................................................ 25

Wiring Diagram......................................................................................................................... 26

SECTION 9: PARTS ....................................................................................................................... 27

WARRANTY & RETURNS ............................................................................................................. 29

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 1815 W. Battlefield Springfield, MO 65807 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.

Like all machinery there is potential danger when operating this machine. Accidents are frequently caused by lack of familiarity or failure to pay attention. Use this machine with respect and caution to decrease the risk of operator injury. If normal safety pre cautions are overlooked or ignored, seri ous personal injury may occur.

Manufacture Date Serial Number

No list of safety guidelines can be com plete. Every shop environment is different. Always consider safety first, as it applies to your individual working conditions. Use this and other machinery with caution and respect. Failure to do so could result in serious personal injury, damage to equip ment, or poor work results.

-2 Model T28523 (Mfd. Since 05/19)

Identification

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

Wheel Guard (1 of 2) Spark Deflector (1 of 2) Safety Shield (1 of 2) Tool Rest (Left) ON/OFF Switch

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

Tool Rest (Right) Model T28523 (Mfd. Since 05/19) -3-

Controls & Components

Refer to the following figures and descriptions to become familiar with the basic controls and com ponents of this machine. Understanding these items and how they work will help you understand the rest of the manual and minimize your risk of injury when operating this machine.

Control or Component Description

A. Wheel Guard (1 of 2): Prevents accidental contact with grinding wheel, and contains sparks during grinding. B. Spark Deflector (1 of 2): Reduces amount of sparks spraying back towards the operator.

B

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

A C. Safety Shield: Acts as a protective barrier against sparks during grinding operations. This shield is not a substitute for personal protective equipment.

D. Tool Rest (Right): Provides flat surface to rest workpiece on during operations.

E. ON/OFF Switch Disabling Key: Disables switch when key is removed so motor cannot start.

F. ON/OFF Switch: Turns motor ON when flipped up; turns motor OFF when flipped down.

C F E D Figure 2. Safety and electrical components.

G. Tool Rest (Left): Provides flat surface to rest workpiece on during operations. Includes a V-groove for controlling angle of contact with grinding wheel.

G Figure 1. Safety components.

-4 Figure 3. Left tool rest. Model T28523 (Mfd. Since 05/19)

Machine Data Sheet

MACHINE DATA SHEET

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

MODEL T28523 8" SLOW‐SPEED BENCH GRINDER 1/3 HP

Product Dimensions:

Weight................................................................................................................................................................ 34 lbs.

Width (side-to-side) x Depth (front-to-back) x Height............................................................... 16 x 12-1/2 x 15-1/2 in.

Footprint (Length x Width)......................................................................................................................... 8 x 5-1/2 in.

Shipping Dimensions:

Type............................................................................................................................................................. Cardboard Content........................................................................................................................................................... Machine Weight................................................................................................................................................................ 37 lbs.

Length x Width x Height....................................................................................................................... 17 x 15 x 12 in.

Electrical:

Power Requirement........................................................................................................... 120V, Single-Phase, 60 Hz Full-Load Current Rating.......................................................................................................................................... 3A Minimum Circuit Size.............................................................................................................................................. 15A Connection Type....................................................................................................................................... Cord & Plug Power Cord Included.............................................................................................................................................. Yes Power Cord Length................................................................................................................................................. 6 ft.

Power Cord Gauge......................................................................................................................................... 18 AWG Included Plug Type................................................................................................................................................ 5-15 Switch Type.............................................................................................................. Toggle Switch w/Removable Key

Motors: Main

Horsepower............................................................................................................................................. 1/3 HP Phase............................................................................................................................................ Single-Phase Amps.............................................................................................................................................................. 3A Speed................................................................................................................................................ 1750 RPM Type............................................................................................................................................... AC Induction Power Transfer ............................................................................................................................... Direct Drive Bearings..................................................................................................... Shielded & Permanently Lubricated

Other Specifications:

Country of Origin ................................................................................................................................................ China Warranty ........................................................................................................................................................... 1 Year Approximate Assembly & Setup Time ........................................................................................................ 15 Minutes Serial Number Location ................................................................................................................... Machine ID Label ISO 9001 Factory .................................................................................................................................................... No Certified by a Nationally Recognized Testing Laboratory (NRTL) .......................................................................... No

Features:

Left Eye Shield Includes Magnifier Adjustable Tool Rest Left Tool Rest Grooved for Drill Bits Includes 60-Grit and 120-Grit Wheels (3600 RPM Maximum)

Model T28523

The information contained herein is deemed accurate as of 5/15/2019 and represents our most recent product specifications.

Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased.

Model T28523 (Mfd. Since 05/19)

PAGE 1 OF 1

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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.

Alerts the user to useful information about proper operation of the machine to avoid machine damage.

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 your workshop kid proof!

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.

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.

DISCONNECT POWER FIRST. Always discon nect machine from power supply BEFORE mak ing adjustments, changing tooling, or servicing machine. This prevents an injury risk from unin tended startup or contact with live electrical com ponents.

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 T28523 (Mfd. Since 05/19)

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.

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. 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.

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 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.

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 OFF and ensure all moving parts completely stop before walking away. Never leave machine running while unattended. 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.

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.

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 T28523 (Mfd. Since 05/19) -7-

-8-

Additional Safety for Grinders

Serious injury or death can occur from impact injuries if grinding wheel breaks apart during use. Rotating grinding wheels can easily remove skin, or entanglement/amputation injuries can occur from being caught in moving parts or in-running pinch points. Flying sparks can ignite explosive or flammable materials. To minimize risk of getting hurt or killed, anyone operating machine MUST completely heed hazards and warnings below.

SAFE MOUNTING & WORK AREA. An unse cured grinder may become dangerously out of control during operation. Before use, verify grinder is FIRMLY secured in a location free of explosive or flammable materials.

STARTING GRINDER. If a wheel is damaged, 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.

EYE SHIELDS. Place eye shields close to grind ing wheel and re-adjust as wheel wears down.

TOOL REST POSITION. If tool rest is too far away from wheel, workpiece may be pulled down, causing loss of control and pulling your hand into grinding wheel. Keep tool rest within 1 ⁄ 8 " from wheel when operating. Replace grinding wheel when tool rest gap is wider than tional adjustment can be made.

1 ⁄ 8 " and no addi VISUAL INSPECTION. Verify that grinding wheels are free of cracks, chips, or dents in wheel surface before installing. Do not use wheel if it has any of these problems or it could break apart during operation.

RING TEST. Perform a "ring test" on grinding wheels before installation to ensure they are safe to use. A wheel that does NOT pass ring test may break or fly apart during operation.

WHEEL SPEED RATING. Wheels operated at a faster speed than rated for may break apart dur ing operation. Before mounting a new wheel, be sure wheel RPM rating is equal or higher than speed of grinder. Never use unmarked wheels. HAND & WHEEL CONTACT. Keep a firm grip on workpiece and position your hands a safe dis tance away when grinding. Anticipate when work piece will heat up, and cool it before it becomes too hot to hold, or use an appropriate clamp. Avoid wearing gloves as they may get caught in grinding wheel and cause even more serious entanglement injuries.

WHEEL FLANGES. Only use flanges included with grinder when mounting wheels. Other flang es may not properly secure wheel and cause an accident. Do not use warped or damaged flanges, and always use paper discs (blotters) between wheels and flanges to reduce risk of flanges cracking wheel when tightened.

VIBRATING WHEEL. Never use a wheel that vibrates. Replace wheel or shaft bearings immediately.

SPARK DEFLECTOR GAP. Keep gap between end of spark deflector and grinding wheel between 1 ⁄ 8 " and 1 ⁄ 4 ". If the gap is larger, exces sive sparks and abrasives can be expelled toward the operator.

SPINDLE NUT. Only tighten wheel spindle nut enough to drive wheel and prevent slippage.

EYE, FACE, & LUNG PROTECTION. Grinding ejects small particles at a high rate of speed. These particles can cause blindness, skin injuries or respiratory damage. ALWAYS wear approved clothing, safety goggles, face shield, and a respi rator for type of grinding to be done.

SIDE & TOP GRINDING. Grinding on side of wheels can cause them to crack and burst— unless wheel is rated for side grinding. Grinding on top of wheels greatly increases risk of work piece kickback. Always grind on downward part of wheel.

Model T28523 (Mfd. Since 05/19)

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.

Electrocution, fire, shock, or equipment damage may occur if machine is not properly grounded and connected to 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 120V ....... 3 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.

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.

120V 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 ........................................ 120V Cycle ..........................................................60 Hz Phase ........................................... Single-Phase Power Supply Circuit ......................... 15 Amps

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.)

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.

-9 Model T28523 (Mfd. Since 05/19)

Grounding & Plug 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 5-15 RECEPTACLE

Grounding Pin

5-15 PLUG

Neutral Hot Figure 4. Typical 5-15 plug and receptacle.

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.

SHOCK HAZARD!

Two-prong outlets do not meet the grounding requirements for this machine. Do not modify or use an adapter on the plug provided—if it will not fit the outlet, have a qualified electrician install the proper outlet with a verified ground.

-10 Model T28523 (Mfd. Since 05/19)

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!

Unpacking

This machine was carefully packaged for safe transport. When unpacking, separate all enclosed items from packaging materials and inspect them for shipping damage.

If items are damaged, please call us immediately at (570) 546-9663.

IMPORTANT: Save all packaging materials until you are completely satisfied with the machine and have resolved any issues between Grizzly or the shipping agent. You MUST have the original pack-

aging to file a freight claim. It is also extremely helpful if you need to return your machine later.

Wear safety glasses during the entire setup process!

Needed for Setup

The following are needed to complete the setup process:

Description Qty

• Safety Glasses (for each person) ............... 1 • • • Mounting Hardware ( Page 13) ... As Needed Fine Ruler ................................................... 1 Phillips Screwdriver #2 ............................... 1 -11 Model T28523 (Mfd. Since 05/19)

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.

NOTICE

If you cannot find an item on this list, care fully check around/inside the machine and packaging materials. Often, these items get lost in packaging materials while unpack ing or they are pre-installed at the factory.

Box 1 (Figure 5) Qty

A. Grinder (Not Shown) ................................... 1 B. Spark Deflectors ......................................... 2 C. Safety Shields w/Fasteners ........................ 2 D. Safety Shield Bracket (Right) ..................... 1 E. Safety Shield Bracket (Left) ........................ 1 F. Clamping Brackets ..................................... 2 G. Tool Rest Bracket (Right) ........................... 1 H. Tool Rest Bracket (Left) .............................. 1 I. Tool Rest (Left) ........................................... 1 J. Tool Rest (Right) ......................................... 1

Fasteners (Figure 6) Qty

K. Fender Washers 5mm ................................ 2 L. Lock Washers 5mm.................................... 2 M. Flat Washers 6mm ..................................... 4 N. 3-Lobe Knobs M5-.8 .................................. 2 O. Knob Bolts M6-1 x 16 ................................. 2 P. Carriage Bolts M5-.8 x 50 .......................... 2 Q. Hex Bolts M6-1 x 14 ................................... 2 R. Phillips Head Screws M5-.8 x 10 w/Washers .................................................. 4 K N L O M P Q Figure 6. Fastener inventory.

R B C D F G H I J E Figure 5. Tool rest and safety shield parts.

-12 Model T28523 (Mfd. Since 05/19)

Site Considerations Workbench Load

Refer to the Machine Data Sheet for the weight and footprint specifications of your machine. Some workbenches may require additional rein forcement to support the weight of the machine and workpiece materials.

Placement Location

Consider anticipated workpiece sizes and addi tional space needed for auxiliary stands, work tables, or other machinery when establishing a location for this machine in the shop. Below is the minimum amount of space needed for the machine.

Bench Mounting

Number of Mounting Slots ............................. 2 Diameter of Mounting Hardware Needed ..

3 ⁄ 8 "

The base of this machine has mounting slots that allow it to be fastened to a workbench or other mounting surface to prevent it from moving during operation and causing accidental injury or damage.

The strongest mounting option is a "Through Mount" (see example below) where holes are drilled all the way through the workbench—and hex bolts, washers, and hex nuts are used to secure the machine in place.

12 1 / 2 " 16" Figure 7. Minimum working clearances.

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.

Hex Bolt Flat Washer

Machine Base Workbench

Flat Washer Lock Washer Hex Nut Figure 8. "Through Mount" setup.

Another option is a "direct mount" (see example below) where the machine is secured directly to the workbench with lag screws and washers.

Lag Screw Model T28523 (Mfd. Since 05/19) Flat Washer

Machine Base Workbench

Figure 9. "Direct Mount" setup.

-13-

Assembly

The machine must be fully assembled before it can be operated. Before beginning the assembly process, refer to applicable).

Needed for Setup and gather all listed items. To ensure the assembly process goes smoothly, first clean any parts that are cov ered or coated in heavy-duty rust preventative (if

To assemble grinder:

1. Attach spark deflectors to grinder with (4) M5-.8 x 10 Phillips head screws with washers (see Figure 10).

3. Attach safety shields with brackets to grinder with (2) M6-1 x 14 hex bolts, (2) clamping brack ets, and (2) 6mm washers (see Figure 12).

Bracket Figure 10. Spark deflector attached to grinder.

2. Loosen hex bolts attached to underside of safety shields. Slide safety shields onto safety shield brackets with magnifier on left bracket (see Figure 11). Re-tighten hex bolts.

Safety Shield Bracket Figure 12. Safety shield with bracket attached to grinder.

4. Assemble left tool rest using (1) left tool rest bracket, (1) left tool rest, (1) 6mm flat washer, and (1) M6-1 x 16 knob bolt (see Figure 13).

5. Assemble right tool rest using (1) right tool rest bracket, (1) right tool rest, (1) 6mm flat washer, and (1) M6-1 x 16 knob bolt (see Figure 13).

Tool Rest Tool Rest Bracket Flat Washer Knob Bolt Figure 13. Example tool rest assembly (left).

Hex Bolt Figure 11. Left safety shield with hardware and bracket.

-14 Model T28523 (Mfd. Since 05/19)

6. Attach tool rest assemblies to grinder using (2) M5-.8 x 50 carriage bolts, (2) 5mm fender washers, (2) 5mm lock washers, and (2) M5-.8 knobs (see Figure 14).

NEVER grind without tool rest in place and properly positioned. "Free hand" grinding or too large of a gap between wheel and tool rest increases risk of kickback, which may lead to serious injury.

x 2 Figure 14. Tool rest installation.

Tool Rest Adjustment

The tool rest stabilizes the workpiece when grind ing. It must always be positioned correctly when using the grinder, to avoid workpiece and possibly operator's hands from being pulled into grinding wheel. 1 As the grinding wheel wears, adjust the tool rest closer to the grinding wheel to maintain a gap of 1 ⁄ 16 " – 1 ⁄ 8 " (see Figure 15). If the gap reaches ⁄ 8 " and no additional adjustments can be made, replace the grinding wheel.

Some grinding wheels must be replaced before spark deflector or tool rest reach their final adjustment. As diameter of a grinding wheel is reduced, so is available surface speed. Grinding under these condi tions can lead to faster abrasive loss and poor grinding results. Always follow wheel manufacturer's directions.

Spark Deflector Adjustment

The spark deflector prevents sparks from shower ing the top of the workpiece and the operator's hands. As the wheel wears, adjust the spark deflector closer to the grinding wheel to main tain a gap of 1 ⁄ 8 " – 1 ⁄ 4 " (see Figure 16). If the gap reaches 1 ⁄ 4 " and no additional adjustments can be made, replace the grinding wheel.

1 ⁄ 8 " – 1 ⁄ 4 " 1 ⁄ 16 " – 1 ⁄ 8 " Figure 16. Spark deflector gap.

Figure 15. Tool rest gap.

Model T28523 (Mfd. Since 05/19) -15-

Test Run

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

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.

The Test Run consists of verifying the following: 1) The motor powers up and runs correctly, and 2) the safety disabling mechanism on the switch works correctly.

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 problems or unusual noises.

4. Remove key from toggle switch, as shown below.

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.

Figure 17. Removing key from switch.

5. Try to start machine with the switch.

Machine should (NOT) start. If it does start, the switch disabling feature is not functioning properly and the switch must be replaced.

-16 Model T28523 (Mfd. Since 05/19)

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, seek additional training from experienced 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.

Eye and face injuries and respiratory prob lems can occur while operating this tool. Wear personal protective equipment to reduce your risk from these hazards.

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

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

2. Selects correct grinding wheel for type of workpiece grinding, inspects wheel, performs a "ring test," and installs wheel.

3. Verifies/adjusts tool rest position so it is perpendicular to grinding wheel and gap is 1 ⁄ 16 " to 1 ⁄ 8 ", and verifies/adjusts spark deflector and wheel gap is between 1 ⁄ 8 " to 1 ⁄ 4 ".

4. Positions safety shield for safe grinding.

5. Ensures that ON/OFF switch is in OFF posi tion, and connects grinder to power.

6. Puts on personal protective equipment.

7. Stands aside, starts grinder and allows it to reach full speed and operate for at least one minute to ensure grinding wheel does not fly apart from the centrifugal force of rotation.

8. Places workpiece on tool rest and positions it for grinding.

9. Operator gradually feeds workpiece into grinding wheel and moves workpiece left and right to prevent grooves in wheel.

10. Quenches workpiece as required to prevent surface hardening or temper loss.

11. Stops bench grinder.

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

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.

-17 Model T28523 (Mfd. Since 05/19)

Workpiece Inspection

Some workpieces are not suitable for grinding on a bench grinder.

Before grinding, inspect all workpieces for the following:

Hard Workpiece: Workpieces that are made of stone, carbide, stainless steel, ceramics, glass, or have hardened welds will wear out most general-grade grinding wheels quickly. If hard materials are to be ground, you must install the correct type of grinding wheel.

Soft Workpiece: Workpieces that are made of aluminum, brass, lead, and other nonfer rous metals will load up in the grinding wheel and render the abrasive useless. Grinding wood, plastics, rubber, fiberglass, or other soft materials can also cause the same problem and lead to the wheel overheating and possibly bursting during use if ignored. To restore a loaded grinding wheel surface, redress with a dressing tool.

• •

Flexible/Unstable Workpiece: Grinding on the side or the ends of cable, chain, or round workpieces creates the hazard of workpiece twist or grab, leading to entanglement with the wheel or shaft. This hazard must be avoided.

Loose Parts: Make sure that the workpiece is free of any parts like springs, pins, balls, or other components that may loosen or dis lodge during grinding, and hit the operator. Strength: Make sure that the workpiece is strong enough to be ground. Should it break, the broken piece may dig into the wheel and cause kickback or severe injury.

Electrical system is not waterproof. DO NOT use grinder with liquid cooling system for wet grinding. Ignoring warning can lead to electrocution or machine damage.

Wheel Selection

The Model T28523 only accepts Type 1 wheels with a 5 ⁄ 8 " bore.

Aluminum oxide and silicon carbide wheels are marked in a somewhat uniform manner by all the major manufacturers. Understanding these markings will help you understand the capabilities of various wheels. Always refer to the manufac turer’s grinding recommendations when selecting a wheel for your project.

The basic format for wheel numbering is:

Prefix 1 Abrasive Type A Grit Size Grade 60 L Bond Type V The Prefix is the manufacturer’s designation for a particular wheel type (e.g. Type 1 wheels).

The most common Abrasive Types used are A for Aluminum Oxide, C for Silicon Carbide, and occasionally SG for Seeded Gel.

The Grit Size is a number that refers to the size of the abrasive grain in the wheel. The lower the number, the coarser the wheel. Ten is a very coarse wheel for roughing and 220 is usually the upper range 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 will have a “V” indicating Vitrified Clay is used. Vitrified Clay provides high strength and good porosity. The other common bond type is “B” for resin where synthetic resins are used. These are used to grind cemented carbide and ceramic materials.

Note: There may be other numbers inserted that

have meaning for a particular type of wheel. Refer to the manufacturer’s technical data for a com plete explanation.

-18 Model T28523 (Mfd. Since 05/19)

Wheel Care

• • When grinding, your safety depends, to a large degree, on the condition of the wheel. A wheel in poor condition presents the possibility of breaking apart during rotation and injuring the operator and others in the area.

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. DO NOT grind material inappropriate for the wheel type.

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

Mount the wheel properly (see Removal & Installation on Page 20).

Wheel

Do not push the tooling into the grinding wheel with such force that it causes the grind er to bog down. And do not apply pressure to stop the wheel after turning the grinder OFF.

Dress the wheel when necessary. Do not allow it to become glazed (see Wheel Dressing on Page 20).

Do not store wheels in damp or wet locations.

Do not overtighten the nut when mounting the wheel.

Wheel Inspection

Before mounting a new grinding wheel, it must be inspected. Do not assume that a wheel is in sound condition just because it is new—often damage can occur in shipping, with age, or with exposure to moisture. 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.

To perform ring test:

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

2. If size permits, balance grinding wheel with a screw driver through mounting hole. If this is not possible, hang wheel in air with a piece of cord or string looped through mounting hole in center.

3. At spots shown in Figure 18, gently tap grind ing wheel with a light non-metallic device such as handle of a screwdriver or a wooden mallet.

Note: Finding exact spot to tap may take sev-

eral attempts.

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 Model T28523 (Mfd. Since 05/19) Figure 18. Tapping locations when performing a ring test.

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4. An undamaged grinding wheel will emit a clear metallic ring or “ping” sound in each of these spots. A damaged grinding wheel will respond with a dull thud that has no clear tone. — If you determine from ring test that grind ing wheel is damaged, DO NOT use it!

Wheel Dressing

Depending on the type of grinding you do, the grinding wheel may require periodic dressing. There are several different types of wheel dressing devices available on the market (see Page 22 for an example). Dressing restores the abrasive qual ity of the wheel surface and brings the wheel edge back to a square form. Refer to the instructions that accompany your dressing accessory for complete details on how to properly dress the wheel.

Wheel Removal & Installation

ALWAYS visually inspect and perform a “ring test” on a wheel before assembly. DO NOT use damaged wheels!

To remove and install grinding wheel:

1. DISCONNECT MACHINE FROM POWER!

2. Remove outer guard by removing (2) M5-.8 x 50 Phillips head screws and (2) M5-.8 flange nuts, (1) M5-.8 knob, (1) 5mm lock washer, (1) 5mm fender washer, and (1) M5-.8 x 50 carriage bolt (see Figure 19).

Always adjust tool rest and spark deflector after dressing or replacing grinding wheel. Failure to do so could lead to workpiece kickback and injury.

Outer Guard Figure 19. Location of outer guard hardware that must be removed when removing wheel.

-20 Model T28523 (Mfd. Since 05/19)

3. Remove M16-2 hex nut (see Figure 20). Tip: Hold grinding wheel with free hand to

stop it from turning while loosening the hex nut.

Note: Spindle on left side of grinder has left-

hand threads. Turn it clockwise to loosen.

Outer Grinding Wheel Flange Paper Disc

NEVER assemble grinding wheel on spindle without paper or fiber discs between wheel and flange. Not using discs can put stress on wheel, causing it to crack and possibly fly apart.

7. Mount new grinding wheel in order shown in Figure 21. Tighten M16-2 hex nut snugly but do not over-tighten. Over-tightening can stress and crack wheel.

Paper Discs Hex Nut Figure 20. Outer wheel guard removed.

4. Remove outer grinding wheel flange and paper disc.

5. Remove grinding wheel from spindle. Take note of paper or fiber disc between wheel flanges and wheel. These cushion the pres sure of the wheel flanges and help distribute pressure more evenly. They also help reduce damage to the flanges.

6. Verify flatness of inner and outer flanges by placing them on a level surface. If either flange is warped or damaged, replace it.

Warped wheel flanges can contribute to grinding wheel breaking and flying apart. Never use warped wheel flanges. Always check flanges before re-installing grinding wheel.

5 0 R P M lum in u mn Ox ide n d d Bo Figure 21. Assembly order for wheel installation.

8. Re-assemble outer wheel guard using hard ware removed in Step 2.

9. While standing away from line of rotation, turn grinder ON and run new grinding wheel for at least 1–2 minutes before standing in front of it. This helps protect you if the wheel has internal damage that will cause it to fly apart from the centrifugal force of rotation. — If grinder runs smoothly, grinding wheel may now be used.

— If wheel appears to wobble, grinder vibrates excessively, or any other unsafe condition appears with new wheel, stop grinder and refer to Troubleshooting on Page 25.

Model T28523 (Mfd. Since 05/19) -21-

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.

Basic Eye Protection

T20501—Face Shield Crown Protector 4" T20502—Face Shield Crown Protector 7" T20503—Face Shield Window T20451—“Kirova” Clear Safety Glasses T20452—“Kirova” Anti-Reflective S. Glasses T20456—DAKURA Safety Glasses, Black/Clear

T20502 T20452 T20503 T20451

Model H5944—#0 Wheel Dresser Model H5945—#1 Wheel Dresser Model H5946—#2 Wheel Dresser

Exposes new grains for aggressive cutting on all types of grinding wheels. Star wheels and discs are hardened steel. Cast iron handle provides stabilizing mass for better control

.

Figure 23. Rotary-type dressing tools.

Grinding Wheels

G7424—8" x 1", 24 Grit G7425—8" x 1", 36 Grit G7426—8" x 1", 46 Grit G7427—8" x 1", 60 Grit

These Aluminum Oxide bench grinding wheels measure 8" x 1" and include a 1 ⁄ 2 "-1 1 ⁄ 4 " bore. The nested bushings adjust to 1 ⁄ 2 ", 5 ⁄ 8 ", 3 ⁄ 4 " and 1".

T20456 Figure 24. 8" x 1" aluminum oxide grinding wheels.

order online at

www.grizzly.com

or call

1-800-523-4777

-22 Model T28523 (Mfd. Since 05/19)

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 this machine, this maintenance schedule must be strictly followed.

Ongoing

To maintain a low risk of injury and proper machine operation, if you ever observe any of the items below, shut down the machine immediately and fix the problem before continuing operations: Loose mounting bolts.

Cracked or loose grinding wheel.

Worn or damaged wires.

Any other unsafe condition.

Grinding Wheels

The grinding wheels should be inspected before every use. Use the ring test method noted in Wheel Inspection on Page 19 to verify the structural integrity. Take care in storing grinding wheels to keep them free from potential damage by being dropped or having other items drop on them.

Replace the wheel when the spark deflector or tool rest has no more adjustment and the gap has exceeded the safe limit.

Cleaning & Protecting

Cleaning the Model T28523 is relatively easy. Vacuum excess debris, and wipe off the remaining dust with a dry cloth.

Wheel Dressing

Depending on the type of grinding you do, the grinding wheel may require periodic dressing. Several different kinds of wheel dressing devices are available. Dressing restores the abrasive quality of the wheel surface and squares up the wheel edge. Refer to the instructions that accompany your dressing accessory for complete details on how to properly dress a wheel.

Wheel Storage

Grinding wheels can be easily damaged, so it is important to store them properly. Follow all wheel manufacturer storage instructions. Always store grinding wheels in a location that is dry and pro tected from potential damage due to them being dropped or having other items dropped on them. Also, avoid storing grinding wheels where there is high humidity, extreme heat or cold, or solvents.

-23 Model T28523 (Mfd. Since 05/19)

SECTION 7: SERVICE

Review the troubleshooting procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather the

serial number and manufacture date of your machine before calling.

Troubleshooting Motor & Electrical

Symptom

Machine does not start, or power supply fuse/breaker trips immediately after startup.

Machine stalls or is underpowered.

Machine has vibration or noisy operation.

Possible Cause

1. Switch disabling key removed.

2. Incorrect power supply voltage or circuit size.

3. Power supply circuit breaker tripped or fuse blown. 4. ON/OFF switch at fault.

5. Motor at fault.

1. Machine undersized for task.

2. Motor overheated.

3. Run capacitor at fault.

4. Motor bearings at fault.

5. Motor at fault.

1. Motor or component loose.

2. Machine incorrectly mounted to workbench or stand.

3. Grinding wheel at fault/arbor hole not round.

4. Motor bearings at fault.

5. Motor shaft bent.

Possible Solution

1. Install switch disabling key.

2. Ensure correct power supply voltage and circuit size. 3. Ensure circuit is sized correctly and free of shorts. Reset circuit breaker or replace fuse.

4. Replace switch.

5. Test/repair/replace. 1. Use new grinding wheel; reduce feed rate.

2. Let cool, and reduce workload.

3. Test/repair/replace.

4. Test/repair/replace.

5. Test/repair/replace.

1. Inspect/replace damaged parts; tighten if loose.

2. Tighten mounting hardware.

3. Dress/replace grinding wheel.

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

5. Test with dial indicator and replace motor.

Operations

Symptom

Machine slows when operating.

Wavy condition on surface of workpiece.

Lines on surface of workpiece.

Burning spots or cracks in the workpiece.

Wheel dulls quickly, grit falls off.

Possible Cause

1. Operator applying too much pressure.

1. Machine vibrating.

2. Workpiece not held firmly.

3. Wheel face uneven.

4. Wheel is too hard.

1. Wheel surface loaded with residue.

2. Workpiece not held tightly.

1. Improper type of grinding wheel.

2. Improper feed rate.

3. Workpiece requires quenching.

1. Depth of cut too great.

2. Wheel is too soft for material being ground.

3. Wheel diameter too small.

4. Bad wheel dress.

5. Defective wheel bonding.

Possible Solution

1. Use less pressure when grinding.

1. Securely mount on solid surface ( 3. Dress grinding wheel ( Page 20). Page 13).

2. Use a holding device to firmly hold workpiece.

4. Use softer wheel, or reduce feed rate.

1. Dress grinding wheel ( Page 20).

2. Use holding device to firmly hold workpiece.

1. Try softer wheel or a wheel with coarser grit.

2. Slow down rate of workpiece movement into wheel.

3. Quench workpiece in water to cool. 1. Slow down rate of workpiece movement into wheel.

2. Select harder bond.

3. Replace grinding wheel ( Page 20).

4. Dress grinding wheel ( Page 20).

5. Consult manufacturer of grinding wheel.

-24 Model T28523 (Mfd. Since 05/19)

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 T28523 (Mfd. Since 05/19) -25-

Wiring Diagram

Base Electrical Access Panel

Wt Wt Bk Bk Wt

Safety Switch KEDU HY7 (Shown from behind)

Bk Bk Bk Ground Wt Wt Wt Bk Gn Run Capacitor 20uF 300VAC Motor ON/OFF Switch Gn Bk Hot Wt Neutral Run Capacitor Figure 25. T28523 wiring components.

-26-

READ ELECTRICAL SAFETY ON PAGE 25!

Ground

120 VAC

5-15 Plug The motor wiring shown here is current at the time of printing, but it may not match your machine. Always use the wiring diagram inside the motor junction box.

Model T28523 (Mfd. Since 05/19)

SECTION 9: PARTS

We do our best to stock replacement parts when possible, but we cannot guarantee that all parts shown are available for purchase. Call (800) 523-4777 or visit www.grizzly.com/parts to check for availability.

24 25 26 59

MODEL T28523 8" SLOW-SPEED Specifications Motor: 1/2 HP, 120V, 1-Ph, 60 Hz Full-Load Current Rating: 4.8A

Motor Speed: 3450 RPM Arbor Size: 5/8" Weight: 30 lbs.

Date Serial Number Mfd. for Grizzly in China WARNING!

1. Read and understand owner’s manual before operating.

2. Always wear approved eye protection and respirator.

3. Tie back long hair, roll up sleeves, and DO NOT wear loose clothing, gloves or jewelry.

4. Only use grinding wheels suitable for speed of grinder.

5. Always use tool rest and hold workpiece firmly with both hands when 6. Stand to side of grinder during start-up.

7. Never use damaged grinding wheel. Inspect and test to ensure wheel is free from cracks and defects.

8. Securely mount machine to stable workbench or stand before starting.

9. Disconnect power before changing grinding wheels, adjusting, or servicing.

10. Only operate with all guards and eye shields installed.

11. DO NOT expose to rain or use in wet locations.

12. DO NOT operate under influence of drugs or alcohol or when tired.

13. Prevent unauthorized use by children or untrained users; restrict access or disable machine when unattended.

60 28 29 30 1 42 43 27 41 31 32 33 35 36 37 34 57 44 58 32 45 46 42 25 57 47 61 22 21 11 38 51 19 39 18 50 55 54 7 56 8 53 57 30 52 15 11 13 48 6 4 49 1 40 12 9 4 2 23 3 4 12 14 57 5 4 6 7 8 56 57 16 10 13 11 15 22 17 18 39 19 20 2 11 21 Model T28523 (Mfd. Since 05/19)

BUY PARTS ONLINE AT GRIZZLY.COM!

Scan QR code to visit our Parts Store.

-27-

Parts List

REF PART #

23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

DESCRIPTION

PT28523001 PHLP HD SCR M5-.8 X 50 PT28523002 CARRIAGE BOLT M5-.8 X 50 PT28523003 HEX NUT M16-2 LH PT28523004 GRINDING WHEEL FLANGE PT28523005 GRINDING WHEEL 8" X 1" X 5/8" 120G PT28523006 PHLP HD SCR M5-.8 X 10 PT28523007 SPARK DEFLECTOR PT28523008 PHLP HD SCR M5-.8 X 10 PT28523009 SAFETY SHIELD (RIGHT) PT28523010 SAFETY SHIELD BRACKET (LEFT) PT28523011 FLAT WASHER 6MM PT28523012 SAFETY SHIELD CLAMPING PLATE PT28523013 SHIELD BRACKET CLAMP PT28523014 SAFETY SHIELD W/MAGNIFIER (LEFT) PT28523015 HEX BOLT M6-1 X 14 BLK PT28523016 WHEEL GUARD (INNER, LEFT) PT28523017 TOOL REST BRACKET (LEFT) PT28523018 FENDER WASHER 5MM PT28523019 KNOB M5-.8, 3-LOBE, D25 PT28523020 TOOL REST (LEFT) PT28523021 KNOB BOLT M6-1 X 18, 3-LOBE, D25 PT28523022 FLANGE NUT M5-.8

PT28523023 WHEEL GUARD (OUTER, LEFT) PT28523024 FLANGE NUT M5-.8

PT28523025 MOTOR END CAP PT28523026 WAVY WASHER 40MM PT28523027 STATOR PT28523028 GROMMET 10MM RUBBER PT28523029 EXT TOOTH WASHER 4MM PT28523030 PHLP HD SCR M4-.7 X 8 PT28523031 ON/OFF SWITCH KEDU HY7 250V

REF PART #

54 55 56 57 58 59 60 61 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

DESCRIPTION

PT28523032 PHLP HD SCR M5-.8 X 8 PT28523033 SWITCH PLATE PT28523034 HEX BOLT M8-1.25 X 22 PT28523035 GRINDER BASE PLATE PT28523036 FOOT (RUBBER) PT28523037 PHLP HD SCR M5-.8 X 16 PT28523038 R CAPACITOR 25M 300V 1-1/2 X 3 PT28523039 LOCK WASHER 5MM PT28523040 SAFETY SHIELD BRACKET (RIGHT) PT28523041 GRINDER BASE PT28523042 BALL BEARING 6024ZZ PT28523043 ROTOR PT28523044 STRAIN RELIEF PLATE PT28523045 STRAIN RELIEF TYPE-1 1/2 PT28523046 POWER CORD 18G 3W 78" 5-15P PT28523047 PHLP HD SCR M5-.8 X 148 PT28523048 WHEEL GUARD (INNER, RIGHT) PT28523049 GRINDING WHEEL 8" X 5/8" X 1" 60G PT28523050 TOOL REST BRACKET (RIGHT) PT28523051 TOOL REST (RIGHT) PT28523052 HEX NUT M16-2 PT28523053 WHEEL GUARD (OUTER, RIGHT) PT28523054 LOCK WASHER 4MM PT28523055 FLAT WASHER 4MM PT28523056 LOCK WASHER 5MM PT28523057 FLAT WASHER 5MM PT28523058 LOCK WASHER 8MM PT28523059 MACHINE ID LABEL PT28523060 TOUCH-UP PAINT, GRIZZLY GREEN PT28523061 ELECTRICITY LABEL

Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes off or becomes unreadable, the owner of this machine MUST replace it in the original location before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com.

-28-

BUY PARTS ONLINE AT GRIZZLY.COM!

Scan QR code to visit our Parts Store.

Model T28523 (Mfd. Since 05/19)

WARRANTY & 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.

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.

In the event you need to use 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. 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.

To take advantage of this warranty, you must register it at https://www.grizzly.com/secureforms/ warranty-card, or you can scan the QR code below to be automatically directed to our warranty registration page. Enter all applicable information for the product.

WARRANTY

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