9
Maintenance and Inspection
9.3 Grease Replenishment/Exchange
9-12
177010-1CD
HW1483759
MH215
II
9.3.1.3 Grease Replenishment/Exchange for U-Axis Speed Reducer
Fig. 9-6: U-Axis Speed Reducer Diagram
Grease Replenishment
(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 from the grease inlet and
exhaust port
3. Install a grease zerk A-PT1/8 to the grease inlet. (The grease zerk is
delivered with the manipulator.)
4. Inject grease through the grease inlet using a grease gun.
– Grease type:
Molywhite RE No. 00
– Amount of grease:
280 cc
(560 cc for 1st supply)
– Air supply pressure of grease pump: 0.3 MPa or less
– Grease injection rate:
8 g/s or less
5. Move the U-axis for a few minutes to discharge excess grease.
6. Wipe the discharged grease with a cloth and reinstall the plug PT1/8
on the grease exhaust port. Apply Three Bond 1206C to the thread
part of the plug, and tighten the plug with a tightening torque of
4.9 N
•
m (0.5 kgf
•
m).
7. Remove the grease zerk from the grease inlet and reinstall the plug
PT1/8. Apply Three Bond 1206C to the thread part of the plug, and
tighten the plug with a tightening torque of 4.9 N
•
m (0.5 kgf
•
m).
Grease exhaust port
Grease inlet
Hexagon socket head plug PT1/8
B
A
Hexagon socket head plug PT1/8
NOTE
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.
Do not install a joint, a hose, etc. to the grease exhaust port.
Failure to observe this instruction may result in damage to
the motor due to coming off of an oil seal.
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