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Chucks are heavy! Get assistance when
installing or removing the chuck from the
lathe. Wear heavy duty leather boots for
foot and toe protection, and keep hands and
fingers away from all pinch points. Ignoring
this warning can lead to a severe crushing
injury or finger amputation!
Specifications
•
OD Clamping Range . 0.59"-11.8" (15-300mm)
•
ID Clamping Range .. 3.54"-11.4" (90-290mm)
•
Outer Diameter ......................12.20" (310mm)
•
Maximum Chuck Key Torque .......137 ft/lbs*
•
Maximum Jaw Gripping Force ....... 9892 lbs*
•
Maximum Speed .............................1800 RPM
•
Two-Piece Hardened Steel Jaws ............... Yes
•
Plain Back Mounting ................................. Yes
•
Jaw Mounting Cap Screw Torque ......79 ft/lbs
•
Grease Fitting Lubricated ......................... Yes
•
Cast-Iron Construction .............................. Yes
•
Chuck Weight ......................................... 87 lbs
•
Origin ................................................... Taiwan
* Maximum handle torque and gripping force
is given at full jaw and scroll gear engage-
ment. If jaw and scroll gear are partially
engaged, clamping force and gripping force is
reduced.
If you need help with your new item, contact
us at: (360) 734-1540 • FAX: (360) 676-1075
Instruction Sheet
Model SB1312
High Precision 12" Lathe Chuck
Hardened steel jaws
for durability and
extreme clamping
force and grip.
Designed for
up to
1800 RPM.
Universal
plain-back
mounting.
Figure 1. Features.
Installation
1.
UNPLUG THE MACHINE FROM POWER!
2.
Mount the back plate on the spindle.
3.
Accurately measure the inside of the back
relief bore on the chuck. This dimension is
critical and should be ± 0.001''.
4.
Face the back plate to true it. Make passes
across the face until its entire surface has
been cut.
5.
Turn a shoulder into the face
0.001" to 0.002'' larger than the back relief
bore diameter. Remember that this is a press
fit. Chamfer the corner a small amount to
prevent any burrs when installing.
Grease fitting for
complete internal
lubrication.
Two-piece
jaws for speedy
internal/external
clamping changes.
Manufactured
with high-tech
German CNC
machinery.
⁄
'' deep and
1
8
-1-
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Table of Contents
Related Manuals for South bend SB1312
Summary of Contents for South bend SB1312
- Page 1 Instruction Sheet Model SB1312 High Precision 12" Lathe Chuck Grease fitting for Hardened steel jaws complete internal for durability and lubrication. extreme clamping Chucks are heavy! Get assistance when force and grip. installing or removing the chuck from the lathe. Wear heavy duty leather boots for...
- Page 2 Set the chuck on the back plate, aligning the Secure Clamping: • A thrown workpiece may shoulder with the relief bore. Use a transfer cause severe injury or even death. When punch to mark the back plate. If a transfer swapping the chuck jaw positions, use a punch is not available, a drill bit of the same torque wrench to re-torque the M12-1.75...
- Page 3 Care & Maintenance Always disconnect machine from power before performing maintenance or serious personal injury may result. For optimum performance from your chuck, Note: Each jaw is marked follow the maintenance schedule below, and 1, 2, or 3 to correspond never hammer on the chuck, jaws, or a workpiece to its marked slot in the chuck.
- Page 4 Please Note: We included this breakdown for service purposes only. Since many of the parts shown are machined to each individual chuck, they are not available as replacement items. Copyright © January, 2010 By South Bend Lathe Co. WARNING: No portion of this manual may be reproduced in any shape or form without the written approval of South Bend Lathe Co.
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