Chapter 7 Maintenance and Inspection
36
Step 6
• Inject the lubricant until it overflows from the upper tapped hole for injecting/draining grease on the
drain side.
Step 7
• Remove the injector from the grease nipple and plug the tapped holes “A” and “B” for
injecting/draining grease on both the greasing and drain sides.
Step 8
• Rotate the output shaft of the reduction gear by 1 or 2 turns.
Do not use the motor to rotate the output shaft of the reduction gear for safety, if possible. If the motor
is used by necessity, run the motor at a low speed and never touch the rotation section. Otherwise,
you could be caught by the rotation section, which will result in serious injury.
Step 9
• Repeat steps 5 to 8 if the amount of injected lubricant does not reach the amount of drained lubricant.
Step 10
• It is recommended that the inside of the reduction gear is flushed so that the lubricant can be replaced
more efficiently.
• When flushing the inside of the reduction gear, remove the injector from the tapped hole “A” on the
supply side, and attach a hexagon socket head cap plug to the tapped hole “A” on the drain side.
(Reference: Table 7-4 “Plug size and tightening torque”)
• Calculate the output shaft conversion and set the servomotor rotation speed so that the output shaft
rotation speed is 5 to 10 rpm. Then, rotate the motor for about one minute.
• Perform steps 1 to 9 again.
Set the rotation speed based on the output shaft conversion by taking the customer’s operation
conditions into account.
Step 11
• Attach the hexagon socket head cap plugs and other parts removed in step 3 above to the tapped
holes “A” and “B” for injecting/draining grease with the specified tightening torque.
(Reference: Table 7-4 “Plug size and tightening torque”)
Replace with new seal tape.
• If the customer’s component is flush with the tapped holes “A” and “B” for injecting/draining grease,
tighten it so that the plugs will not protrude from the edge surface.
Step 12
• Wipe off the lubricant adhering to the surrounding completely.
Important
Fig. 7-3
Tapped hole “B” for
injecting/draining grease
Tapped hole “A” for injecting/draining grease
Injector
Inject grease.
Drain grease.
