40
16-3. To mount spur gears
The mounting method of spur gears varies by the motor shaft and flange diameter. The following
procedure is recommended to mount the spur gears by three-method mainly used.
○
Taper shaft
1) Wipe up dust adhered on the taper shaft surface and inside of spur gears.
2) Attach the key to the shaft before mounting the spur gear.
3) Attach the washer and tighten the nut securely.
○
Straight shaft (with key)
1) Wipe up dust adhered on the straight shaft surface and inside of spur gears.
2) Attach the key to the shaft.
3) Fix the spur gear and waster securely.
4) Mount the spur gear with the washer to the shaft securely by using the bolt.
○
Straight shaft (locking element spec.)
1) Wipe up dust adhered on the straight shaft surface and inside of super gears and coat them with oil
or grease. However, do not use lubricate of silicon system or molybdenum system, or oil and grease
including an extreme-pressure additive agent.
2) Insert the washer, locking element, spacer and spur gear in order.
3) At this time, attach the locking element (Generic name for inner ring and outer ring) so as to
pressurize the inner ring.
4) Tighten bolts on each diagonal line equally in order so that the end face of spur gear and the flange
end face of motor become parallel.
5) Tighten the bolts until washers do not move in an axial direction. After that, adjust the mounting
position of spur gear.
6) Attach the dial gauge to the end face of spur gear and tighten bolts equally. Rotate the spur gears
and also, tighten each bolt until the run out of dial gauge becomes 0.01mm or less.
7) Check that the spur gears are fixed to the shaft securely.
Fig.17
Washer
A
Spur gear
Bolt
Detail part A
Spacer
Inner ring
Motor
Spur gear
Key
Nut
Motor
Key
Washer
Spur gear
Bolt
Bolt
Taper shaft
Straight shaft (with key)
Locking element
Straight shaft (locking element spec.)
Outer ring
Dial gauge
Spur gear