9 Maintenance and Inspection
9.3 Notes on Grease Replenishment/Exchange Procedures
9-14
158813-1CD
HW1480080
MH80 Manipulator
4. Inject grease into the grease inlet using a grease gun.
– Grease type: Molywhite RE No. 00
–
Amount of grease: 140 cc
(280 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 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).
7. 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).
9.3.3.2 Grease Exchange
(
Refer to Fig. 9-7 “U-Axis Speed Reducer”.)
1. Tilt the U-arm horizontal to the ground. (Refer to Fig. 9-6 “U-Arm
Posture in Grease Replenishment/Exchange for U-Axis Speed
Reducer”.)
2. Remove the hexagon socket head plug PT1/8 from the grease
ex
haust port.
3. Remove the hexagon socket head plug PT1/8 from the grease inlet
a
nd install the grease zerk PT1/8. (The grease zerk is delivered with
the manipulator.)
4. Inject grease into the grease inlet using a grease gun.
– Grease type: Molywhite RE No. 00
–
Amount of grease: 700 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 completed when new grease appears in the
g
rease 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.
• 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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