9
Maintenance and Inspection
9.3 Grease Replenishment/Exchange
9-13
173124-1CD
HW1482991
MPL300
II
9.3.4 Grease Replenishment/Exchange for U-Axis Speed Reducer
Fig. 9-6: U-Axis Speed Reducer Diagram
9.3.4.1 Grease Replenishment
(Refer to
Fig. 9-6 “U-Axis Speed Reducer Diagram”
.)
1. Remove the hexagon socket head plugs from the grease inlet and
grease exhaust port.
2. Install a grease zerk A-PT1/8 to the grease inlet.
(The grease zerk is delivered with the manipulator.)
3. Inject grease through the grease inlet using a grease gun
– Grease type:
Molywhite RE No.00
– Amount of grease:
320 cc
(640 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 U-axis for a few minutes to discharge excess grease.
5. Wipe the discharged grease with a cloth, and reinstall the plug. Before
installing the plug, apply Three Bond 1206C on the thread part of the
plug. Then tighten the plug with a tightening torque of 24.5 N•m
(2.5 kgf•m).
6. Remove the grease zerk from the grease inlet, and reinstall the plug.
Before installing the plug, apply Three Bond 1206C on the thread part
of the plug. Then tighten the plug with a tightening torque of 4.9 N•m
(0.5 kgf•m).
Grease inlet
Hexagon socket head plug
Grease exhaust port
Hexagon socket head plug
U-axis speed
reducer
NOTE
• If grease is injected with the plug on, 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.
NOTE
If the plug is installed while grease is being exhausted,
grease will leak inside the motor and may cause a damage.
Make sure to install the plug when the grease exhaust is
completed.
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