South bend SB1313 Instruction Sheet

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 ... 0.32"-6.30" (8-160mm)
• ID Clamping Range .. 2.17"-5.90" (55-150mm)
• Outer Diameter ........................6.57" (167mm)
• Maximum Chuck Key Torque .........58 ft/lbs*
• Maximum Jaw Gripping Force ....... 4721 lbs*
• Maximum Speed .............................2000 RPM
• Two-Piece Hardened Steel Jaws ............... Yes
• Plain Back Mounting ................................. Yes
• Jaw Mounting Cap Screw Torque ......29 ft/lbs
• Grease Fitting Lubricated ......................... Yes
• Cast-Iron Construction .............................. Yes
• Chuck Weight ......................................... 20 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 SB1313
High Precision 6" Lathe Chuck
Four hardened steel jaws
for durability and
extreme clamping
force and grip
Designed for
up to
2000 RPM
Universal
plain-back
mounting
Figure 1. Features.

Installation

1. DISCONNECT LATHE 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 and true the diameter of the back plate.
Make passes across the face until the 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-