Sealey SM27.V2 Instructions Manual

INSTRUCTIONS FOR:
METAL TURNING LATHE
MODEL: SM27.V2
© Jack Sealey Limited
Original Language Version
SM27.V2
Issue: 2(L) - 06/03/15
INSTRUCTIONS FOR:
METAL TURNING LATHE
MODEL No: SM27.V2
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these
instructions, and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE THE PRODUCT
CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR PERSONAL INJURY AND WILL
INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
Refer to
instruction
manual
Wear eye
protection
1. SAFETY
1.1.
Electrical Safety
 WARNING! It is the responsibility of the owner and the operator to read, understand and comply with the following:
You must check all electrical products, before use, to ensure that they are safe. You must inspect power cables, plugs, sockets and any other
connectors for wear or damage. You must ensure that the risk of electric shock is minimised by the installation of appropriate safety devices. A
Residual Current Circuit Breaker (RCCB) should be incorporated in the main distribution board. We also recommend that a Residual Current
Device (RCD) is used. It is particularly important to use an RCD with portable products that are plugged into a supply which is not protected
by an RCCB. If in any doubt consult a qualified electrician. You may obtain a Residual Current Device by contacting your Sealey dealer.
You must also read and understand the following instructions concerning electrical safety:
1.1.1. The Electricity at Work Act 1989 requires all portable electrical appliances, if used on business premises, to be tested by a qualified
electrician, using a Portable Appliance Tester (PAT), at least once a year.
1.1.2. The Health & Safety at Work Act 1974 makes owners of electrical appliances responsible for the safe condition of those appliances
and the safety of the appliance operators. If in any doubt about electrical safety, contact a qualified electrician.
1.1.3. Ensure that the insulation on all cables and on the appliance is safe before connecting it to the power supply. See 1.1.1. and 1.1.2.
and use a Portable Appliance Tester.
1.1.4. Ensure that cables are always protected against short circuit and overload.
1.1.5. Regularly inspect power supply cables and plugs for wear or damage and check all connections to ensure that none are loose.
1.1.6. Important: Ensure that the voltage marked on the appliance matches the power supply
to be used and that the plug is fitted with the correct fuse - see fuse rating at right.
1.1.7. DO NOT pull or carry the appliance by the power cable.
1.1.8. DO NOT pull the plug from the socket by the cable.
1.1.9. DO NOT use worn or damaged cables, plugs or connectors. Immediately have any faulty item
repaired or replaced by a qualified electrician. When a BS 1363/A UK 3 pin plug is damaged, cut the
cable just above the plug and dispose of the plug safely.
Fit a new plug according to the following instructions (UK only).
a) Connect the GREEN/YELLOW earth wire to the earth terminal ‘E’.
b) Connect the BROWN live wire to the live terminal ‘L’.
c) Connect the BLUE neutral wire to the neutral terminal ‘N’.
d) After wiring, check that there are no bare wires, that all wires have been correctly
connected, that the cable outer insulation extends beyond the cable restraint and that the
restraint is tight.
Double insulated products, which are always marked with this symbol
, are fitted with live (brown)
RECOMMENDED
and neutral (blue) wires only. To rewire, connect the wires as indicated above - DO NOT connect
FUSE RATING: 13AMP
either wire to the earth terminal.
1.1.10. Products which require more than 13Amps are supplied without a plug. In this case you must contact
a qualified electrician to ensure that a suitably rated supply is available. We recommend that you discuss the installation of an
industrial round pin plug and socket with your electrician.
1.1.11. If an extension reel is used it should be fully unwound before connection. A reel with an RCD fitted is preferred since any appliance
plugged into it will be protected. The cable core section is important and should be at least 1.5mm², but to be absolutely sure that the
capacity of the reel is suitable for this product and for others which may be used in the other output sockets, we recommend the use
of 2.5mm² section cable.
1.2.
General Safety
 WARNING! Disconnect the lathe from the mains power and ensure that the chuck or face plate is at a complete standstill before attempting
to change accessories, service or perform any maintenance.
 Maintain the lathe in good condition (use an authorised service agent).
 Replace or repair damaged parts. Use recommended parts only. Unauthorised parts may be dangerous and will invalidate the warranty.
 Locate the lathe in a suitable area. Ensure that the mounting surface is flat and firm. Keep the area clean and tidy and free from unrelated
materials, and ensure that there is adequate lighting.
 Keep the lathe clean for best and safest performance.
 WARNING! Before each use check that face plate/chuck, cutting tool and tailstock are secure and not worn or damaged. If any part of the
lathe is worn or damaged replace immediately.
© Jack Sealey Limited
Original Language Version
SM27.V2
Issue: 2(L) - 06/03/15
 WARNING! Keep chuck guard and holding fixings in place, tight and in good working order. The safety micro switch ensures that the lathe
will not operate when the chuck guard is raised. Check regularly for damaged parts.
A chuck guard that is damaged or missing must be repaired or replaced before the lathe is next used.
 WARNING! DO NOT over-ride the chuck guard safety micro switch.
 Remove adjusting keys and wrenches from the lathe and its vicinity before turning it on.
 WARNING! Wear approved safety eye protection and, if oil mist is generated, respiratory protection.
 Remove ill fitting clothing. Remove ties, watches, rings and other loose jewellery and contain long hair.
 Keep hands and body clear of the workpiece when operating the lathe.
 Maintain correct balance and footing. Ensure that the floor is not slippery and wear non-slip shoes.
 Keep children and unauthorised persons away from the work area.
 WARNING! DO NOT switch on the lathe whilst the cutting tool is in contact with the workpiece. Bring the cutting tool gradually to the
workpiece.
 Avoid un-intentional starting of the lathe.
 DO NOT use the lathe for a task it is not designed to perform.
 DO NOT allow untrained persons to operate the lathe.
 DO NOT get the lathe wet or use in damp or wet locations or areas where there is condensation.
 WARNING! DO NOT use the lathe where there are flammable liquids, solids or gases such as petrol, paint solvents, waste wiping rags etc.
 DO NOT operate the lathe if any parts are missing or damaged as this may cause failure and/or personal injury.
 DO NOT lift or remove the chuck guard whilst the lathe is in use.
 DO NOT touch the workpiece close to the cut as it will be very hot. Allow to cool.
 DO NOT leave the lathe running unattended.
 DO NOT operate the lathe when you are tired or under the influence of alcohol, drugs or intoxicating medication.
 When not in use switch off the lathe and isolate from the power supply.
2. INTRODUCTION
Quality workshop lathe suitable for a wide range of turning and drilling applications. Features power feed for even surface finish and thread
cutting. Four-way tool post mounted on compound slide mechanism enables fast interchange of cutting tools with accurate feed. Powered by
550Watt motor through a six-speed gearbox. Incorporates quiet-running PTO gearbox with oil bath lubrication for power feed. Supplied with
three-jaw chuck and dead centre. Fitted with no-load voltage release switch. Meets Supply of Machinery (Safety) Regulations 1992 (and
amendments). Workshop stand available as an optional extra, Model No. SM27ST.V2.
3. SPECIFICATION
Motor ...................................................... 550W - 230V 50Hz
Spindle Speed Range ......................................160-1600rpm
Distance Between Centres ........................................ 500mm
Centre Height Over Table ......................................... 150mm
Centre Height Over Saddle ......................................... 80mm
Spindle Bore ............................................................... 26mm
Headstock Taper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MT4
Tailstock Taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MT3
Tailstock Travel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mm
Screw Cutting:
Metric Pitches. . . . . . . . . . . . . . . . . . . .14 in range 0.5-3mm
Imperial Pitches . . . . . . . . . . . . . . . . . . 20 in range 11-40tpi
4. CONTENTS










Lathe
Face Plate
Three-jaw (Internal) Chuck and Chuck Key
External Chuck Jaws
Centres, MT3 & MT4
Gear Set, Thread Cutting, 13pc (Metric)
Drive Belts, 2 Short, 1 Long
4 Hex Keys, 4, 5, 6 & 8mm
2 Spanners, 8x10mm & 17x19mm
WARNING! Safe handling will require two people.
Note that the lathe has four pull-out handles (fig.1.6)
to aid lifting.
fig.1
5. ASSEMBLY
5.1. Unpack the product and check that all components and tools are
present and undamaged. If any problem is noted contact your supplier immediately.
5.2. The machine has been coated with grease to protect it in shipping. Remove the coating
with commercial degreaser, kerosene or similar solvent before use. After degreasing coat the machined surfaces with machine oil.
5.3. Position the lathe on a sturdy workbench or on the optional stand (Model No. SM27ST.V2). The lathe should be bolted directly to the
workbench or stand through the four holes provided in the bed.
6. OPERATION
It is assumed that the operator has experience of machining practice and these instructions are intended only to describe the features
of the lathe. If you have no experience of machining it is recommended that you undertake training before using this machine.
 WARNING! Before operating the lathe ensure that you are wearing approved safety goggles and gloves to protect you from swarf
and metal particles. If using cutting oil or coolant a face mask may be necessary to avoid breathing any vapour generated. Ensure that
all other safety instructions in Section 1 are followed carefully.
6.1. Initial start-up
6.1.1. Check that the forward/reverse switch is in the forward position (fig.1.9) and that the leadscrew
lever (fig.2.A) is on zero.
Note that the forward/reverse switch must only be changed when the lathe is switched off.
6.1.2. Set the automatic feed lever (fig.2.B) to disengaged - turn clockwise.
6.1.3. Confirm that the cross slide is well clear of the chuck and that all keys, spanners etc. are clear of the machine. Move the cross slide along
the lathe bed by turning leadscrew handle (fig.1.5).
6.1.4. Connect the lathe to the mains supply.
6.1.5. Lower the chuck guard.
Note that the lathe will only operate with the chuck guard lowered.
© Jack Sealey Limited
Original Language Version
SM27.V2
Issue: 2(L) - 06/03/15
6.1.6. Switch on the lathe by pushing the green switch (fig.1.10).
6.1.7. For this initial start-up run the lathe for about five minutes.
fig.2
6.1.8. Switch off the lathe by pressing the red switch (fig.1.11). Disconnect from the mains supply.
6.1.9. Check that nothing on the lathe has worked loose and that the mounting bolts are secure.
6.2. Headstock
The headstock spindle has an MT4 taper (internal) for the face plate or a spindle centre
(see Accessories Section).
6.3. Tailstock
The tailstock spindle has an MT3 taper (internal) for a centre or chuck. See Accessories
Section for the rolling centre and tailstock chuck. The spindle is positioned using the feed handle
(fig.1.4) and then locked with the locking handle (fig.1.3).
The tailstock base may be moved along the lathe bed as necessary and locked in position by
the locking lever (fig.1.7).
6.4. Tool Post
Up to four tools can be mounted on the tool post. The post can be rotated, in 90° steps,
by slackening the locking handle (fig.3.1), and slightly lifting the post. Always ensure
that the locking handle and tool clamp screws (fig.3.2) are tight before starting to cut.
The tool post is mounted on the compound slide, which in turn is mounted on the cross
slide. The compound slide can be rotated ±60° on the cross slide to permit bevel and
taper cutting. To rotate the compound slide, loosen the two clamp nuts (fig.3.4) and
fig.3
rotate the slide to the required angle. Tighten the clamp nuts.
The cross slide can be locked in position along the bed by the locking lever (fig.1.8).
6.5. Chuck
The chuck is supplied with internal jaws fitted and a set of external jaws. To remove
and fit jaws proceed as follows:
Using the chuck key, fully wind out the fitted jaws, at which point they can be pulled
from the chuck.
The thread segments on the jaws are staggered and therefore the jaws are numbered
1 to 3 (on the inner end of the left location groove) and must be fitted in this sequence,
in an anticlockwise direction (facing the chuck).
Turn the chuck key anticlockwise while watching the chuck thread in one of the jaw
slots. When the end of the thread has just cleared the slot, stop turning the key and
insert jaw 1 into this slot. Insert the other two jaws in the other slots in sequence.
Hold them under light pressure whilst turning the key clockwise until they are picked
up by the thread and start to move inwards.
Check that the three jaws come together correctly at the centre of the chuck. If not,
repeat the procedure.
6.6. Speed
The headstock spindle is belt driven and the speed is determined by the belt
arrangement. To change the speed proceed as follows:
6.6.1. Open the belt cover (fig.1.1).
6.6.2. Slacken the motor adjuster nuts and the centre pulley nut (fig.4.A & B).
6.6.3. Position the belt(s) to give the required lathe speed, see fig.5.
6.6.4. Check that the weight of the motor is tensioning the belt(s) and then tighten the motor adjuster nuts and the centre pulley nut.

WARNING! Before starting the lathe always confirm that nothing will contact the chuck by rotating the chuck by hand with the
tool post as far to the left as it will be during the turning operation. Make sure that the chuck guard is in place, as shown in
fig.1.2. The lathe will not operate with the chuck guard raised.
6.7. Turning
6.7.1. Mount the cutting tool in the tool post such that the tip of the tool is level with, or just below, the lathe centre line. Check this by aligning
the tool tip with the point of the tailstock. The tool tip must not be above the centre line. The height of the tool tip may be adjusted
by shimming or grinding the tool.
6.7.2. Mount the workpiece in the chuck or on the face plate (optional, see Accessories Section) and, if necessary, support the other end
with the tailstock. A fixed steady and a moving steady are also available, see Accessories Section.
6.7.3. Set the speed and forward/reverse switch to suit the job. The leadscrew lever (fig.2.A) should be at position O.
6.8. Turning with auto feed
6.8.1. Proceed as in 4.7. but in 4.7.3. set the leadscrew lever (fig. 2.A) to I or II. With the gear set as supplied, position I will feed the tool at
0.075mm/rev and position II at 0.15mm/rev (see Auto Feed for Turning, fig.7). Ensure that the cross slide lock (fig.1.8) is not applied.
6.8.2. Position the tool just to the right of the end of the workpiece and start the lathe.
6.8.3. Turn the auto feed lever (fig.2.B) anticlockwise to engage the leadscrew. The tool will now move to the left and begin cutting.
6.8.4. Be ready to disengage the leadscrew when the tool reaches the end of the cut. DO NOT allow the tool to over-travel and come into
contact with the chuck.
Always be prepared to hit the stop button if the leadscrew cannot be disengaged.
6.9. Screw cutting
Similar to turning with auto feed except that the feed rate is very much faster, demanding increased care from the operator.
6.9.1. Select the required leadscrew gear train from the charts (fig.7).
6.9.2. Open the headstock end cover (fig.1.1).
6.9.3. Remove the gear retaining circlips and nut (fig.6.1, 2 & 3) and slacken the adjuster screw (fig.6.4).
6.9.4. Replace the existing gears with those required, in the positions shown in fig.8.
6.9.5. Adjust gears B and C, so that the train meshes with minimum backlash but without being tight.
6.9.6. Tighten adjuster screw (fig.6.4) and refit the end cover. DO NOT operate the lathe with the end cover open.
© Jack Sealey Limited
Original Language Version
SM27.V2
Issue: 2(L) - 06/03/15
fig.4
Spindle
Speed rpm
A 160
B 250
C 400
D 630
E 1000
F 1600
fig.5
fig.6
6.9.7.
6.9.8.
Mount the workpiece in the lathe with the left hand end of the intended thread as far from the chuck as possible.
With the tool positioned for the first cut, ensure that the automatic feed is engaged (fig.2.B) and that the leadscrew lever (fig.2.A) is
set to I or II as required for the thread.
6.9.9. Ensure that the cross slide lock (fig.1.8) is not applied.
6.9.10. Lower the chuck guard and switch on the lathe.
6.9.11. When the tool reaches the end of the thread switch off the lathe. DO NOT disengage the leadscrew.
6.9.12. Reposition the tool for the second cut by moving the forward/reverse switch (fig.2.C) to reverse and starting the lathe. When the tool
clears the start of the thread switch off the lathe.
6.9.13. Adjust the tool for the second cut and move the forward/reverse switch to forward.
6.9.14. Start the lathe for the second cut. Repeat as necessary to complete the thread cutting.
fig.7
Auto Feed for Turning
Feed Rate
Gear Size (Teeth)
Leadscrew
mm/rev A
B
C
D
Lever
0.075 30
60
27
63
I
0.15
30
60
27
63
II
Metric Threads
Thread
Gear Size (Teeth)
Pitch mm A
B
C
D
0.5
50
40
49
42
0.6
60
40
42
36
0.7
56
42
49
32
0.75
60
36
42
32
0.8
56
32
48
36
1.0
60
36
56
32
1.0
50
40
49
42
1.25
63
32
50
27
1.5
63
32
60
27
1.5
60
36
42
32
1.75
60
36
49
32
2.0
60
36
56
32
2.5
63
32
50
27
3.0
63
32
60
27
© Jack Sealey Limited
Leadscrew
Lever
I
I
I
I
I
I
II
I
I
II
II
II
II
II
Imperial
Threads
Threads
Gear Size (Teeth)
Per Inch A
B
C
D
40
50
36
56
42
38
50
57
60
27
36
50
54
60
27
34
60
51
50
27
32
60
48
50
27
30
56
42
50
27
28
60
42
50
27
26
60
39
50
27
24
60
36
50
27
22
60
33
50
27
20
50
36
56
42
19
50
57
60
27
18
50
54
60
27
17
60
51
50
27
16
60
48
50
27
15
56
42
50
27
14
60
42
50
27
13
60
39
50
27
12
60
36
50
27
11
60
33
50
27
Original Language Version
Leadscrew
Lever
I
I
I
I
I
I
I
I
I
I
II
II
II
II
II
II
II
II
II
II
fig.8
SM27.V2
Issue: 2(L) - 06/03/15
7.
MAINTENANCE

WARNING! Ensure that the lathe is unplugged from the power supply before attempting any maintenance.
7.1. Before each use:
Lubricate the leadscrew bearings (oil point to left of scale at handle end and oil point behind gear D at driven end).
Lubricate the leadscrew thread and the leadscrew gears.
Lubricate the cross slide (oil point behind scale and two on front face of slide).
Lubricate the compound slide (two oil points on top face).
Lubricate the tailstock (two oil points on top face).
7.2. Cleaning
Clean the machine after each use and oil all machined surfaces.
7.3. Adjusting play in the slides
If any play becomes apparent in the slides adjust as follows:
a) Loosen the lock nuts (compound slide only) of the gib strip adjusting screws (fig.3.3 shows the screws for the compound slide.
Those for the cross slide are on the right-hand side of the slide, and those for the tail stock are either side of the locking lever).
b) Lightly tighten the screws equally and check that the slide will not move with normal effort on the handle.
c) Back-off each screw by ¼ of a turn (tighten the lock nuts, compound slide only).
d) Check that there is no play and that the slide moves smoothly.
e) If further adjustment is required, tighten or loosen the screws as necessary by ⅛ of a turn only and recheck.
7.4. Headstock oil level
Headstock oil level should be at centre of sight glass (fig.4.D). If necessary top-up with a suitable oil via plug (fig.4.C)
Environmental Protection
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be
sorted, taken to a recycling centre and disposed of in a manner which is compatible with the environment.
When the product becomes completely unserviceable and requires disposal, drain off any fluids (if applicable)
into approved containers and dispose of the product and the fluids according to local regulations.
WEEE Regulations
Dispose of this product at the end of its working life in compliance with the EU Directive on
Waste Electrical and Electronic Equipment (WEEE). When the product is no longer required, it must be disposed
of in an environmentally protective way. Contact your local solid waste authority for recycling information.
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park,
Bury St. Edmunds, Suffolk,
IP32 7AR
© Jack Sealey Limited
Original Language Version
01284 757500
www.sealey.co.uk
01284 703534
[email protected]
SM27.V2
Issue: 2(L) - 06/03/15
ACCESSORIES FOR:
METAL TURNING LATHE
MODEL No:
SM27.V2
These accessories are available from your Sealey dealer.
Ø160mm
Face Plate - SM27FP
Ø160mm
Fixed Steady - SM27FS
4-Jaw Chuck & Back Plate - SM27FJC
Ø13mm, MT3
Tailstock Chuck & Arbor - SM27TC
Moving Steady - SM27MS
MT3
Revolving Dead Centre - SM27RDC
T-Nut Set - SM27THNS
DIN4971R
DIN4975
DIN4980R
DIN4980L
DIN4981R
8x8mm
Lathe Dog - SM3002LD
DIN4972R
DIN4973R
DIN4974R
DIN4976R
DIN4977R
DIN4978R
2pc Cutter Set - SM3002CS2
DIN4971R
DIN4972R
DIN4973R
DIN4974R
DIN4975
DIN4976
DIN4977R
DIN4978R
5pc Cutter Set - SM3002CS5
DIN4980L
DIN4980R
DIN4981R
8x8mm
8x8mm
6pc Cutter Set - SM3002CS6
© Jack Sealey Limited
11pc Cutter Set - SM3002CS11
Original Language Version
Knurling Tool Holder - SM3002KTH
SM27.V2
Issue: 2(L) - 06/03/15