Grease Exchange - YASKAWA Motoman NX100 Manual

9.2 Notes on Maintenance Procedures
Grease Exchange (Refer to " Fig. 26 U-Axis Speed Reducer Dia-
gram ".)
1. Tilt the L-arm horizontal to ground.
2. Remove the hexagon socket head plug PT1/8 from the exhaust port.
If grease is added with the plug on, the grease will go inside the motor and may damage it.
NOTE
It is absolutely necessary to remove the plug.
3. Remove the hexagon socket head plug A-PT1/8 from the grease inlet. Install the
grease zerk A-PT1/4. Inject the grease into the grease inlet using a grease gun. (The
grease zerk is delivered with the manipulator.)
4. The grease exchange is complete when new grease appears in the exhaust port. The
new grease can be distinguished from the old grease by color.
5. Move the U-axis for a few minutes to discharge the excess grease.
6. Wipe the exhaust port with a cloth and reinstall the plug PT1/8. Tighten the plug with a
tightening torque of 5 N・m (0.51 kgf・m). (Apply Three Bond 1211 to the screwed
part of the plug.)
If the plug is installed when the grease is being exhausted, the grease will go inside the
NOTE
motor and may damage it.
7. Remove the grease zerk from the grease inlet and reinstall the plug A-PT1/8. Tighten
the plug with a tightening torque of 5 N・m (0.51 kgf・m). (Apply Three Bond 1211 to
the screwed part of the plug.)
Grease type: Molywhite RE No.00
Amount of grease: Approx. 1800 cc
9-13
HW0481994
56B/76