・
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.
42
・
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 10
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
・
Determine the dimension (dimension
φ
E in Fig.17) of the back plate so that
the plunger nut end surface contacts the back plate and stops when pulling
the plunger nut. If the stroke is larger than the one specified, it may cause a
chuck breakage or gripping failure.
Summary of Contents for BBT200
Page 21: ...Fig 8 20...
Page 50: ......
