Chapter 5 Installation
26
• Insert an O-ring (II) into the groove on the case for the
Step 2
reduction gear.
• If the product does not feature an O-ring groove,
prepare a groove on the customer's component, or seal
the area with a liquid sealant.
• If an O-ring cannot be used due to the structure, seal the
section using a liquid sealant, etc.
(Reference: “4.2.5 Liquid sealant” and “4.2.6 O-rings”)
When a liquid sealant is used, take extra care so that it will not
leak into the case installation bolt section. If the leaking liquid
sealant is mixed into the reduction gear, it could cause
deterioration of performance, such as abnormal noise,
vibration, and torque irregularity. Also, if the liquid sealant
adheres to the lip of the oil seal, it could cause leakage of the
lubricant.
When a liquid sealant is used, take extra care so that it will not leak into the case installation bolt
section. It could deteriorate the bolt tightening force, and eventually result in deterioration of the
transmission torque.
When a liquid sealant is used, follow the instructions of the detailed coating method given by the
manufacturer of the sealant to be used.
• Align the mounting holes of the motor mounting flange with the mounting holes of the reduction
Step 3
gear (case section) and positions of the tapped holes
for the case installation component, and then attach
the motor mounting flange to the reduction gear.
• Take extra care so that the O-ring is not caught by
the mating section.
• Confirm that the centering shaft of the reduction
gear (case section) is correctly fitted into the
centering hole of the motor mounting flange.
• Check that there is no foreign matter adhering to the
mounting surface .
If the O-ring is caught by the mating section, it could cause
leakage of the lubricant.
If there is foreign matter adhering to the mounting surface, the mounting surface of the reduction
gear may be deformed, which could cause deterioration of performance, such as abnormal noise
and torque irregularity, and durability.
The shape of the motor mounting flange may differ from the illustration above, depending on the
customer’s equipment or shape of the reduction gear.
Fig. 5-2
Note
Note
Fig. 5-2
O-ring (II)
Reduction gear
O-ring groove on the
case
Fig. 5-3
Motor mounting
flange
Reduction gear
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