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If you need help with your new item, contact
us at: (360) 734-1540 • FAX: (360) 676-1075
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!
Model SB1307
High Precision 6" Lathe Chuck
Instruction Sheet
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 .........................................19 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.
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
1
⁄8'' deep and
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.
Figure 1. Features.
Manufactured
with high-tech
German CNC
machinery.
Grease fitting for
complete internal
lubrication.
Universal
plain-back
mounting.
Hardened steel jaws
for durability and
extreme clamping
force and grip.
Two-piece
jaws for speedy
internal/external
clamping changes.
Designed for
up to
2000 RPM.