Grease Replacement Procedures For S-, L-, And U-Axis Speed Reducers - YASKAWA MOTOMAN-MPX2600 Instructions Manual

180788-1CD
MPX2600

10.2.1.2 Grease Replacement Procedures for S-, L-, and U-Axis Speed Reducers

10 Maintenance and Inspection
10.2 Maintenance for Manipulator
Make sure to follow the instructions listed below at grease replenishment/
replacement. Failure to observe the following notes may result in damage
to motor and speed reducer.
1. If grease is injected without removing the plug from the
grease exhaust port, the grease will leak inside a motor,
or an oil seal of a speed reducer will come off. Make
sure to remove the plug and inject grease.
Also, when using a tube, the length must be 150 mm or
shorter and the inside diameter must be 6 mm or longer.
If the tube is too long, the exhaust resistance at the tube
part is increased, and the inner pressure of the grease
bath is raised. It may result in coming off of an oil seal.
2. Make sure to use a grease pump to inject grease. Set
air supply pressure to the grease pump at 0.3 MPa or
less, and the grease injection rate at 7 g/s or less.
3. When using extrusion air for discharging the grease, set
air supply pressure at 0.025 MPa or less.
If the air supply pressure is higher than above
mentioned value, an oil seal of a speed reducer will
come off, and it may result in a failure.
NOTE
4. When using extrusion air for discharging grease, grease
may be vigorously discharged from the exhaust port.
Perform an operation such as using a tube at the grease
exhaust port to pour into an appropriate container.
5. Make sure to fill the hose on the grease inlet with grease
beforehand to prevent air from leaking into the speed
reducer.
6. After injecting grease, discharge the specified amount of
grease. If insufficient, the inner pressure is raised
during the operation, and grease may leak. When
discharged too much, the speed reducer is not
lubricated sufficiently during the operation, and it may
cause the early failure of the speed reducer.
7. When filling/replacing grease, the grease may flow out
from the grease inlet or the grease exhaust port.
Prepare a container to receive the grease and a waste
cloth to wipe the grease in advance.
When operating the manipulator, do not enter into the working area of
the manipulator. Injury may result if anyone enter into the working area
during operation.
10-6
WARNING
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