Epson C Series Maintenance Manual page 585

6-axis robots

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6. Apply tension to the Joint #3 timing belt and fix the Joint #3

Joint #3 timing belt tension: 25 to 85 N

Belt tension meter setting value

Weight: 2.5 g/mm width × m span, Width: 10 mm,

Span: 168 mm

Hexagon socket set screw: 3-M4×20 (with a plain washer)

Tightening torque: 4.0 ± 0.2 N·m

Regarding belt tension:

- Jumping (position gap) may occur if the value is below the lower limit

- Vibration (abnormal noise) or reduction of life of the parts may occur if the value exceeds the upper

- When you replace with a new belt, belt may stretch and the belt tension will decrease in the initial

stage of operation. Make sure to operate the robot two to three days and check the belt tension again.

When using the belt tension tensile jig (maintenance part):

Fix the belt tension tensile jig (for J1, J2, J3) with the screws (2-M4×35) and push the rubber against the

Tension is applied by pushing the set screw (M6×25) with the rubber.

7. Install the brake power supply.

Cross recessed head screw with captive washer: 2-M3×6

Tightening torque: 0.45 ± 0.1 N·m

8. Connect the following connectors.

Connector: X131, X031, BT3, BR031

9. Install the Arm #2 side cover.

For details, refer to C12 Maintenance: 3. Covers.

10. Perform the calibration.

For details, refer to C12 Maintenance: 16. Calibration.

C Series Maintenance Manual Rev.2

C12 Maintenance 7. Joint #3