Fanuc Robot S-420iR/120

Warning: This lubrication process requires trained personnel with PPE!

Select the parts where grease was replaced

Cross-Roller Bearing Lubrication

Was the cross-roller bearing greased?

Required Positions for Greasing

Refer to item 3.2 and list the positions where grease was applied

Sign off on the robot lubrication

Upload a photo of the replaced filter element

Air filters and oil mist filter replaced at the same time

Sign off on the filter element replacement

Ventilation plug for J5-axis removed

New grease applied from the grease inlet until it comes out from the grease outlet

Plug at the grease outlet remounted

1) Replacing J4--axis motor (M4)

1 Set the posture of the wrist such that no load is applied to the wrist axis.

4 Remove four bolts (M12 x 40 2pcs, M12 x 55 2pcs) for mounting the motor, then the motor.

5 Remove the nut and take out the center gear.

6 Replace the motor with a new one. And reassemble it in a reverse order. Also replace the O--ring (as a precaution). Apply Locktite No. 242 to the threaded portion of the motor shaft. Be sure to mount the O- -ring at the appropriate position. Pay special attention so as not to scratch the tooth face of the super gear.

7 Apply grease to the motor (Refer to section 3).

8 Perform mastering (Refer to section 5.3).

1) Check the following items once every three months. Additional inspection areas and times should be added to the table according to the robot’s working conditions, environment, etc.

Check whether the cable connected to the teach pendant is unevenly twisted.

If the ventilation portion of the control unit is dusty, tum off power and clean the unit.

Check the following items at the first quarterly inspection, then every year thereafter.

Check whether the jackets of the mechanical unit cables are damaged. Also check whether the cables are excessively bent or unevenly twisted. Check that the connectors of the motors and connector panels are securely engaged.See section 7.2.

Clean each part (remove chips, etc.) and check component parts for cracks and flaws.

Further tighten the end--effecter mounting bolts and external main bolts.

Grease to the balancer bushing. Refer to item 3.2. in every 6 month;