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7.3 Replacing the Brake
Maintenance
Electromagnetic Brake
parts
Hexagonal
wrench
Tools
Torque wrench
Nippers
Sonic tension meter
Material
Wire tie
NOTE
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.
Joint #3 brake
(1) Turn ON the Controller.
Removal
(2) Push down the shaft to its lower limit while pressing the brake release switch.
Be sure to keep enough space and prevent the end effector hitting any peripheral
equipment.
The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3 and Joint
#4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is being pressed
because the shaft may be lowered by the weight of an end effector.
(3) Turn OFF the Controller.
(4) Remove the Arm Top Cover.
For details, refer to Maintenance: 3.1 Arm Top Cover.
(5) Remove the Joint #3 motor unit.
For details, refer to Maintenance: 7.2
Replacing the Timing Belt.
LS10-B Rev.6
Name
width across flats: 1.5 mm
width across flats: 2.5 mm
width across flats: 3 mm
width across flats: 4 mm
Maintenance 7. Joint #3
Qty.
Note
1
1499588
1
For M3 set screw
1
For M3 screw
1
For M4 screw
1
For M5 screw
1
1
For cutting wire tie
Z: Belt tension
1
69N (7.0 ± 0.5 kgf)
-
Joint #3
3-M4×18+Washer
Motor Unit
111
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