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7.3 Replacing the Brake
Maintenance
Solenoid brake
parts
Hexagonal wrench
Tools
Nippers
Suitable cord (Length about 800 mm)
Wire tie
Material
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 the replacement procedure following the
removal steps.
(1) Execute the removal steps from (1) to (10) in Maintenance 7.1 Replacing Joint #3
Joint #3 brake
Removal
(2) Remove the brake unit from Arm #2.
(3) Disconnect the connector.
(4) Remove the brake from the brake support.
(5) Remove the brake hub from the Z1 pulley.
G10 / G20 Rev.20
Name
G10
G20
width across flats: 1.5 mm
width across flats: 2.5 mm
width across flats: 3 mm
width across flats: 4 mm
Motor to remove the Joint #3 motor.
Connector X32
Maintenance 7. Arm #3
Quantity
1
R13B030503
-
-
1
For M3 set screw
1
For M3 screw
1
For M4 screw
1
For M5 screw
1
For cutting wire tie
1
For belt tension
3
G10
3-M3×8
Brake hub
Note
Brake unit
G20
Brake
Brake
support
2-M3×4
Set screw
165
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