Motoman PX2750, Manual

Page: 124 / 611

9.2 Maintenance for Manipulator
9-7
HW0480633
Fig. 21 U-axis Harmonic Drive Speed Reducer
„ RV speed reducer
Grease Replenishment
Refer to " Fig. 22 S-axis RV Speed Reducer " and " Fig. 23 L-axis RV Speed Reducer ".
1. Remove the plug in the So (Lo) grease exhaust port. Remove the cover on the L-axis
motor side.
2. Inject grease into the Si (Li) grease inlet. Before injecting grease in the Li port, remove
the plug on Li and install a G nipple A-PT1/8.
3. Move the S-axis (L-axis) for a few minutes to discharge the excessive grease.
4. Wipe the So (Lo) exhaust port with a cloth and reinstall plugs in So (Li and Lo) exhaust
port. Apply Three Bond 1104 on screwed parts.Reinstall the cover on the L-axis motor
side.
• If grease is added without removing the plug, the internal pressure will be higher and may
damage it. It is absolutely necessary to remove the plug.
• When injecting grease into the L-axis speed reducer, grease may come out from the air
flow on the motor base. Remove the cover on the motor side to check if excessive
grease is coming out. If there is any grease, wipe it off.
Grease type: Molywhite RE No. 00
Amount of grease: 800 cc for S-axis;700 cc for L-axis
(For 1st supply: 1500 cc for S-axis, 1400 cc for L-axis)
U-axis
(with hexagon socket head plug PT1/8)
(with hexagon socket head plug PT1/8)
speed reducer
Uo: Air flow
Ui: Grease inlet
NOTE