9 Maintenance and Inspection
9.3 Notes on Grease Replenishment/Exchange Procedures
9-16
158813-1CD
HW1480080
MH80 Manipulator
9.3.4 Grease Replenishment/Exchange for R-Axis Speed Reducer
Fig. 9-8: R-Axis Speed Reducer
9.3.4.1 Grease Replenishment
(Refer to Fig. 9-8 “R-Axis Speed Reducer”.)
1. Remove the hexagon socket head plug 1/8 from the grease exhaust
port.
2. Remove the hexagon socket head plug PT1/8 from the grease inlet
and install the grease zerk PT1/8. (The grease zerk is delivered with
the manipulator.)
3. Inject grease into the grease inlet using a grease gun.
– Grease type: Molywhite RE No. 00
–
Amount of grease: 700 cc
(1400 cc for 1st supply)
– Air supply pressure of grease pump: 0.3 MPa or less
– Grease injection rate: 8 g/s or less
4. Move the R-axis for a few minutes to discharge excess grease.
5. Wipe the discharged grease with a clo
th 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).
6. Remove the grease zerk from the grease inlet and reinstall the plug
PT
1/8. 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).
R-axis speed reducer
(Hexagon socket head plug PT3/8)
(Hexagon socket head plug PT1/8)
Grease exhaust port
Grease inlet
U-arm
• If grease is injected with the plug on, the grease will go
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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