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Maintenance 9. Joint #5
9.4 Joint #5 - Replacing the Electromagnetic Brake
Electromagnetic brake
Maintenance
Parts
Belt tensile jig
Hexagonal
wrench
Cross-point screwdriver (#2)
Tools
Torque wrench
Spanner (width across flats: 8 mm)
Feeler gauge (0.5 mm)
Belt tension meter
* The belt tensile jig is an assembly jig. Use the jig when adjusting belt tension.
The brake is mounted on each joint to prevent the arm from lowering due to its own weight while the
Controller power is OFF or the motor is OFF status. The brake does not work during replacement.
Be careful when performing maintenance work.
Attaching the labels
The electromagnetic brakes are common for Joints #4, #5, and #6.
In order to prevent misconnection of the connectors, attach the label for the electromagnetic brakes as shown
in the photos.
Joint #5 electromagnetic brakes Locations of the connector labels
BR053 is connected at the time of shipment. Before attaching the label, disconnect the
NOTE
connector.
One side of BR052 and BR053 have the same shape. Identify the connectors by color.
288
Name
width across flats: 2 mm
width across flats: 2.5 mm
width across flats: 3 mm
BR052
Cable (red/black)
Qty.
1
2172928 (Common for Joints #4, #5, #6)
1
1674582
1
For M4 hexagon socket set screws
1
For M3 hexagon socket head cap bolts
1
For M4 hexagon socket head cap bolts
1
For cross recessed head screws
1
For tightening torque control
1
For air tube fitting
1
For adjusting the pulley position
1
Refer: Unitta U-505
BR053
Cable (blue/blue)
BR053
Cable(blue/orange)
Note
C8 Rev.13
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