Sealey SM27 - Manual (Page 5)

4.9.7. Mount the workpiece in the lathe with the left hand end of the intended thread as far from the chuck as possible.
4.9.8. 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.
4.9.9. ensure that the cross slide lock (fig.1.8) is not applied.
4.9.10. lower the chuck guard and switch on the lathe.
4.9.11. When the tool reaches the end of the thread switch off the lathe. DO NOT disengage the leadscrew.
4.9.12. 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.
4.9.13. Adjust the tool for the second cut and move the forward/reverse switch to forward.
4.9.14. Start the lathe for the second cut. repeat as necessary to complete the thread cutting.
 WARNING! ensure that the lathe is unplugged from the power supply before attempting any maintenance.
5.1. 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).
5.2. Cleaning
clean the machine after each use and oil all machined surfaces.
5.3. 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.
5.4. 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)
5. MAINTENANCE
Metric Threads
Thread Gear Size (Teeth) Leadscrew
Pitch mm A B C D Lever
0.5 50 40 49 42 I
0.6 60 40 42 36 I
0.7 56 42 49 32 I
0.75 60 36 42 32 I
0.8 56 32 48 36 I
1.0 60 36 56 32 I
1.0 50 40 49 42 II
1.25 63 32 50 27 I
1.5 63 32 60 27 I
1.5 60 36 42 32 II
1.75 60 36 49 32 II
2.0 60 36 56 32 II
2.5 63 32 50 27 II
3.0 63 32 60 27 II
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
Imperial
Threads
Threads Gear Size (Teeth) Leadscrew
Per Inch A B C D Lever
40 50 36 56 42 I
38 50 57 60 27 I
36 50 54 60 27 I
34 60 51 50 27 I
32 60 48 50 27 I
30 56 42 50 27 I
28 60 42 50 27 I
26 60 39 50 27 I
24 60 36 50 27 I
22 60 33 50 27 I
20 50 36 56 42 II
19 50 57 60 27 II
18 50 54 60 27 II
17 60 51 50 27 II
16 60 48 50 27 II
15 56 42 50 27 II
14 60 42 50 27 II
13 60 39 50 27 II
12 60 36 50 27 II
11 60 33 50 27 II
fig.7
fig.8
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.
INFORMATION: for a copy of our latest catalogue and promotions call us on 01284 757525 and leave your full name and address, including postcode.
01284 757500
01284 703534 [email protected]
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park ,
Bury St. edmunds, Suffolk,
IP32 7Ar
www.sealey.co.uk
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Original Language Version
SM27.V2 Issue: 1 - 06/02/12
Parts support is available for this product. To obtain a parts listing and/or diagram,
please log on to www.sealey.co.uk, email [email protected] or phone 01284 757500.