HOWA MACHINERY H3EF, Инструкция по эксплуатации, Страница: 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 Table 2.
Table 2 (mm)
Chuck size 6 8
Runout the outer periphery T.I.R 0.020
Runout the end face T.I.R. 0.020
For the torque to be applied to the chuck installing bolt, refer to Table 3.
Table3
Bolt size M12 M16
Tightening torque (N-m) 101 161
(7) Turn the draw screw and adjust the position of the
draw sleeve. The end face of the draw sleeve is to
be 5mm from the front face of the chuck body for
correct operation as shown in Fig.6.
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 draw sleeve position.
(8) Install the cover and the top jaws to complete the
chuck installation.
(9) If you installed the chuck by screwing the eyebolt
into the chuck periphery, remove the bolt.
2.5.4 Inspection
Operational resistance develops when there is some abnormality in the installation procedure. If
the chuck is used without removal of the resistance, parts seizure or abnormal wear may occur,
causing marked shortening of service life. Once the installation has been completed, be sure to
check out the minimum operating pressure. If it is too high, remove the chuck and solve the
trouble.
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, 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.6
CAUTION
WARNING
WARNING