Chapter 5
Installation
28
For tapered shafts
The following is an example when fixing the input gear to the motor shaft using a draw bolt and a hexagon
nut.
Perform steps 1 to 4 by taking care regarding the following precautions.
• Avoid impact to the motor shaft when attaching the input gear.
• The outer diameters of the hexagon nut and seal washer should be smaller than the root circle
diameter of the input gear.
Avoid impact to the motor shaft when attaching the input gear, as it could damage the motor.
If the outer diameters of the hexagon nut and seal washer are larger than the diameter of the teeth
bottom of the input gear, the hexagon nut and seal washer will interfere with the spur gear, and
therefore, the gear cannot be installed or could be damaged.
Step 1
• Attach the draw bolt to the motor shaft.
Step 2
• Attach the Woodruff key to the motor shaft.
• Check that there is no foreign matter adhering to the mounting surface.
If there is foreign matter adhering to the mounting surface, appropriate installation accuracy cannot
be obtained. It could cause deterioration of performance, such as abnormal noise and vibration, and
also lead to damage of the motor.
Step 3
• Attach the input gear to the motor shaft.
Step 4
• Tighten the hexagon nut into the draw bolt.
• Using a double nut and thread-locking agent, etc., lock the hexagon nut.
If necessary, seal the area with a seal washer, etc. Otherwise, it could cause the leakage of
lubricant.
Note
Note
Important
Fig. 5-14
Seal washer
Input gear
Motor
Hexagon nuts
Woodruff key
Draw bolt
