Epson C Series Maintenance Manual page 586

6-axis robots

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Table of Contents

C12 Maintenance 7. Joint #3

7.2 Joint #3 - Replacing the Reduction Gear Unit

Reduction gear unit (Joint #3)

Belt tensile jig*

Cross-point screwdriver (#2)

Torque wrench

Feeler gauge (0.5 mm)

Belt tension meter

Cloth (cushioning)

* The belt tensile jig is an assembly jig. Use the jig when adjusting belt tension.

The brake is mounted on each joint to prevent the arm from lowering due to its own weight while the

Controller power is OFF or the motor is OFF status. The brake does not work during replacement. Be

careful when performing maintenance work.

When removing the Joint #3 timing belt, tilt the Arm #2 and press it against the Arm #2.

Reference: C12 Maintenance: 7.1 Joint #3 - Replacing the Motor, Removal step (2)

When pressing the arm, put a piece of cloth or a similar material between the arms to avoid contacting each

other. This protects the arm surfaces from scratching and paint peeling off.

width across flats: 2.5 mm

width across flats: 3 mm

width across flats: 4 mm

width across flats: 5 mm

For M3 hexagon socket head cap bolts

For M5 hexagon socket set screws

For M4 hexagon socket head cap bolts

For M5 hexagon socket head cap bolts

For M6 hexagon socket head cap bolts

For cross recessed head screws

For tightening torque control

For adjusting the pulley position

Refer: Unitta U-505

For pressing arms

C Series Maintenance Manual Rev.2