Epson C Series Maintenance Manual page 390

6-axis robots

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C8 Maintenance 9. Joint #5

Installation: Joint #5 Motor

When tightening hexagon socket head cap bolts, refer to the 2.4 Tightening Hexagon Socket

Head Cap Bolts.

1. Install the motor plate to the Joint #5 motor.

Hexagon socket head cap bolts: 2-M4×10

Tightening torque: 4.0 ± 0.2 N·m

Be careful of the assembly direction of the motor plate.

(See the photo.)

2. Mount the Joint #5 electromagnetic brake to the Joint #5 motor unit.

Insert the spacers between the hexagon socket set screws and the

Joint #5 electromagnetic brake.

Hexagon socket set screws: 3-M2.5×10 (with a spacer)

Tightening torque: 2.0 ± 0.1 N·m

Be careful of the assembly direction of the Joint #5

electromagnetic brake wiring. (See the photo.)

3. Mount the drive boss and the pulley 1 to the Joint #5 motor unit.

Fix the drive boss and the motor shaft.

There is an uneven part for the feeler gauge (0.5 mm) on the boss.

Use the uneven part to leave 0.5 mm space.

If there is no space, the parts may chafe while the motor is driving

and it may result in breakage while the motor is moving.

Set the set screws to the positions indicated in the figure.

A: Pulley and motor shaft screws

B: Pulley and drive boss screws

If the screw positions are incorrect or the bushing is not set, it may

cause damage on the side of the part and may result in the part being

unable to be removed.

Uneven part for a feeler

gauge (0.5 mm)

2 places, at 90 deg pitch

C Series Maintenance Manual Rev.2

Electromagnetic

brake wiring