HOWA MACHINERY H032M, Instruction Manual, Page: 35 / 52

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(6) Secure the chuck body to the chuck adapter using the chuck installing bolts provided as
accessories.
Install for the periphery and the end face the chuck body do not deviate exceeding the limits
indicated in Table2.
Table 2
Chuck size 6 8 10 12
Runout the outer periphery T.I.R (mm) 0.020
Runout the end face T.I.R. (mm) 0.020
For the torque to be applied to the chuck installing bolt, refer to Table 3.
Table 3
Bolt size M10 M12 M16
Tightening torque (N-m) 57.9 101 161
(7) Turn the draw screw with a special wrench, and adjust the location of the master jaw.
Appropriate location of the master jaw at the advance end is where the dimension S1 from
the periphery the chuck body in Fig. 5 becomes the value indicated in Table 4.
The draw screw has a click (steel ball and spring for anti-rotation), and therefore stop the
draw screw at a point where its revolution becomes heavy, and adjust the master jaw
position.
Table 4 (mm)
Chuck size 6 8 10 12
Dimension S1 10 11.5 13 15
(8) The operation is completed when the top jaws have been installed.
(9) If you installed the chuck by screwing the eyebolt into the chuck periphery, remove the bolt.
Use extra care when operating the hydraulic or pneumatic circuit
during the chuck installation.
If you actuate such circuits accidentally during chuck installation, you
may be caught between the chuck body and the spindle or between the
top jaw and the master jaw, resulting in injury.
Be sure remove the eyebolt, when the installation is carried out
with using an eyebolt.
If you rotate the chuck with the eyebolt being screwed, you may be
caught by the part of your body or clothing and get injured.
Fasten the chuck installing bolts with recommended tightening
torque.
If the torque is largely different from the recommended value, lower or
higher, the bolts may break and the chuck and/or work piece may fall
out; this presents a hazard that may cause severe personal injury or
death to the operator or bystanders.
Fig. 5
CAUTION
WARNING
WARNING