Toshiba TH650A Maintenance Manual page 70

Industrial robot
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Take careful precautions not to miss the exclusive "O" ring attached to the
bottom of the reduction gear.
When dismounting the reduction gear, it is recommended to prepare a waste
cloth, etc. because the grease is filled to the vicinity of the center gear on the
lower side.
8)
After dismounting the reduction gear, remove the center gear. The center gear
can be drawn out upward as it is. The center gear and reduction gear form a
pair. When replacing the reduction gear, be sure to replace the center gear
also. The center gear is attached to the new reduction gear.
9)
It is recommended to replace the bearing supporting the center gear, too.
Type of bearing used: 6810
Hexagonal strut
"O" ring
M6×65
Axis 1 reduction gear
(RV–27C)
Bearing (6810)
– 70 –
MAINTENANCE MANUAL
Center gear
STE 85306

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