9-3. Attachment of chuck
1. Attach the back plate
・
Tighten the back plate attaching bolts evenly. At this time, tighten the bolts at the
specified torque.
2. Attach the chuck
・
In the case of adjusting the centering of the chuck, lightly hit the body side face with a
plastic hammer.
・
Tighten the chuck attaching bolts evenly. At this time, tighten the bolts at the specified
torque.
・
Keep the periphery run-out and the end surface run-out of the chuck at 0.02mm T.I.R or
less.
36
・
Always tighten the bolts at the specified torque. If the torque is insufficient or
excessive, the bolt will break, which is dangerous as the chuck or work will fly
out.
・
Use the bolts attached to the chuck, and do not use other bolts. However, if
you must use other bolts not provided by Kitagawa, use bolts that have at
least a strength classification of 12.9 (10.9 for M22 or more) and be sure they
are long enough.
Table 12
Bolt size
Tightening torque
M5 8
N
・
m
M6 13
N
・
m
M8 33
N
・
m
M10 73
N
・
m
M12 107
N
・
m
M14 171
N
・
m
M16 250
N
・
m
M20 402
N
・
m
Summary of Contents for JN N Series
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