9-13
155976-1CD
HW0485249
ES165D
9 Maintenance and Inspection
9.3 Notes on Grease Replenishment/Exchange Procedures
9.3.3.2 Grease Exchange
(Refer to Fig. 9-6 “U-Axis Speed Reducer Diagram”.)
1. Make the U-arm horizontal to the ground.
2. Remove the hexagon socket head plug PT1/8 from the grease
exhaust port.
3. Install a grease zerk A-PT1/8 to the grease inlet. (The grease zerk is
d
elivered with the manipulator.)
4. Inject grease through the grease inlet using a grease gun.
– Grease type: Molywhite RE No. 00
–
Amount of grease: approx. 1800 cc
– Air supply pressure of grease pump: 0.3 MPa or less
– Grease injection rate: 8 g/s or less
5. The grease exchange is complete when new grease appears in the
gr
ease exhaust port. (The new grease can be distinguished from the
old grease by color.)
6. Move the U-axis for a few minutes to discharge excess grease.
7. Wipe the discharged grease with a cloth, and reinstall the plug. Before
inst
alling the plug, apply Three Bond 1206C on the thread part of the
plug, then tighten the plug with a tightening torque of 5 N•m
(0.51 kgf•m).
If grease is injected with the plug on, the grease will leak
inside the motor and may cause a damage. Make sure to
remove the plug before the grease injection.
If the plug is installed when the grease is being exhausted,
the grease will go inside the motor and may damage it.
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