9
Maintenance and Inspection
9.3
Grease Replenishment/Exchange Procedures
9-8
HW1483028
HW1483028
9.3.2 Grease Replenishment/Exchange for S-axis Speed Reducer
Fig. 9-4: S-axis Speed Reducer Diagram
9.3.2.1 Grease Replenishment
Replenish the grease according to the following procedure. (Refer to
fig. 9-4 “S-axis Speed Reducer Diagram”
1. Remove the hexagon socket head plug PT1/4 from the grease inlet
and the hexagon socket head plug PT3/8 from the grease exhaust
port
.
2. Install the grease zerk PT1/4 to the grease inlet. (The grease zerk is
delivered with the manipulator.)
3. Inject the grease through the inlet using a grease gun.
– Grease type:
Molywhite RE No.00
– Amount of grease:
1360 cc
(2720 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 S-axis for a few minutes to discharge the excess grease.
5. Wipe the discharged grease with a cloth and reinstall the hexagon
socket head plug PT3/8 to the exhaust port.
Before installing the plug, apply Three Bond 1206C on the thread part
of each plug, then tighten the plug with a tightening torque of 23 N•m
(2.3 kgf•m).
6. Remove the grease zerk from the grease inlet and reinstall the
hexagon socket head plug PT1/4.
Before installing the plug, apply Three Bond 1206C on the thread part
of each plug, then tighten the plug with a tightening torque of 12 N•m
(1.2 kgf•m).
Grease exhaust port
Hexagon socket
head plug PT3/8
S-axis speed reducer
Grease inlet
Hexagon socket
head plug PT1/4
2BC
AIR
S1
1BC
NOTE
• If grease is injected with the plugs 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 a 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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