Epson G20 Series User Manual

Maintenance 10. Ball Screw Spline Unit
198 G10 / G20 Rev.20
10.2 Replacing the Ball Screw Spline Unit
The replacement procedure of the ball screw spline unit for G10 series and G20 series are
different.
Name
Quantity
Note
Maintenance
parts
Ball Screw Spline Unit 1
Each manipulator model
(Refer to Maintenance:
14. Maintenance parts)
Grease
For Ball Screw Spline Unit (AFB grease)
Proper
quantity
Tools
Hexagonal
wrench
width across flats: 1.5 mm
G10
1
For M3 set screw
width across flats: 3 mm
1
For M4 screw
width across flats: 4 mm
1
For M5 screw
Nippers
1
For cutting wire tie
Cross-point screwdriver 1
Only for Cleanroom-model
and Protected-model
Force gauge 1
G10 Belt tension: 130N, 160N
(13.3 kgf, 16.3 kgf)
G20 Belt tension: 130N, 200N
(13.3 kgf, 20.4 kgf)
Suitable cord (Length about 1000 mm)
1
For belt tension
Wiping cloth
1
For wiping grease
10.2.1 Replacing the Ball Screw Spline Unit: G10
A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
Note that the brake will not work during the replacement procedure.
Move the shaft down to its lower limit before starting the replacement procedure by
following the removal steps from (1) to (3).

NOTE

Epson G20 Series Specifications

General

Brand	Epson
Model	G20 Series
Category	Robotics
Language	English