Fanuc Robot S-420iW/175

Upload a photo of the replaced filter element

Sign off on the filter element replacement

1) Replacing the J2/J3--axis motor (M2/M3)

i) Standard type (See Fig. 6.3(a))

2 Suspend the J3--axis arm with a rope. Also, suspend the J3--axis link for safety. (See Fig. 6.3(c).) (For S--420iR, suspend it as shown in Fig. 6.3(d).)

4 Remove the mounting bolts (M12×40) of the motor to be replaced, and remove the motor to be replaced.

5 Remove the nut, the input gear and the draw bolt in order.

6 Replace the motor, and remount a new motor reversing the above procedure. Polish the motor flange with an oil stone. Apply LOCTITE No. 242 to the draw bolt and the motor thread. Mount the O--ring correctly. Use new motor mounting sealbolts. (In case of reusing sealbolts, apply LOCTITE No.242 to them. (Refer to section 6.1) Be careful not to damage the tooth surface of the input gear.

7 Replenish the grease (Refer to section 3).

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

Enter the positions where grease was applied as per item 3.2.

Sign off on the robot lubrication

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;

1) Replacing J6--axis motor (M6)

1 Remove loads from the robot’s wrist such as a hand and workpieces.

2 Turn off the power at the position of J5=--90 degrees.

3 Remove the cover, motor cover and cable connectors.

4 Remove J5--axis cover 2, a plate, a grommet and a clamp. (Do not remove plate and Teflon sheet attached to the J5--axis cover 2).

5 Remove rubber block mounting bolts and take out the cable.

6 Remove four bolts (M8×22) for mounting themotor, then remove the motor.

7 Remove the nut, input gear and the draw bolt.

8 Replace the motor with a new one. Reassemble the removed components. Polish the motor flange with oil stone. 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 input gear. Use new motor mounting sealbolts.