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LS20-B Maintenance 5. Joint #1
5.2 Replacing Joint #1 Reduction Gear Unit
A reduction gear unit consists of the following three parts. When replacing the reduction
gear unit, be sure to always replace the waveform generator, flexspline, and circular spline
all together as one set.
Waveform generator, Flexspline, Circular spline
For details of the reduction gear unit, refer to 14. Maintenance Parts List.
Maintenance
Joint #1 Reduction Gear Unit
Part
Hexagonal
wrench
Tools
Cross-point screwdriver (#2)
Torque wrench
Nippers
Spatula
Wiping cloth
Grease
Grease (SK-1A)
Joint #1
(1) Remove the Joint #1 motor unit.
Reduction
Gear Unit
Removal
(2) Remove the spacer from the reduction gear unit.
(3) Remove the reduction gear unit from the Top Plate.
272
Name
width across flats: 2.5 mm
width across flats: 3 mm
width across flats: 4 mm
width across flats: 5 mm
width across flats: 6 mm
width across flats: 2.5 mm
width across flats: 3 mm
Follow the removal steps in 5.1 Replacing Joint #1 Motor.
Qty.
Note
1
1646483
1
For M5 set screw
1
For M4 screw
1
For M5 screw
1
For M6 screw
1
For M8 screw
1
For M5 set screw
1
For M4 screw
1
For M4 screw
1
1
1
For apply grease
For wiping grease
1
(Motor Flange)
1
For wiping grease (Bolt)
-
-
Reduction
Gear Unit
LS-B series Maintenance Rev.1
8-M5×40
4-M4×15
Spacer
16-M5×30
Top Plate
Reduction
Gear Unit
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