Maintenance 8. Joint #4
LS20-B Rev.4 135
8.3 Replacing the Brake
Name Qty. Note
Maintenance
Electromagnetic brake 1 1803965
Tools
Hexagonal
wrench
width across flats: 1.5 mm 1 For M3 set screw
width across flats: 4 mm 1 For M5 screw
Spanner
Cross-point screwdriver (#2) 1 For M4 screw
Torque wrench
A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving down
and rotating 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).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.