Nabtesco RV E Series, Руководство по эксплуатации

Страница: 41 / 90

Chapter 5 Installation
33
• Attach the deep groove ball bearing to the center gear, and Step 2
then mate the center gear with the deep groove ball bearing
and spur gear on the reduction gear side.
• Confirm that the inner ring of the deep groove ball bearing is
correctly fitted into the centering shaft of the center gear.
• Check that there is no foreign matter adhering to the mating
part (centering location), center gear, and deep groove ball
bearing .

If there is foreign matter adhering to the mating part (centering
location), 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.
• Insert an O-ring (II) into the groove on the case for Step 3
the reduction gear.
• If the product does not feature an O-ring groove, seal
the section using a liquid sealant, etc.
• 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”)
• When a liquid sealant is used, take extra care so that
it will not leak into the reduction gear.
• When a liquid sealant is used, take extra care so that
it will not leak into the case installation bolt section.
• When a liquid sealant is used, follow the instructions
of the detailed coating method given by the
manufacturer of the sealant to be used.

When a liquid sealant is used, if the leaking liquid sealant enters 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, if it leaks into the case mounting bolt section, it could deteriorate the
bolt tightening force, and eventually result in deterioration of the transmission torque.
Note
Note
Fig. 5-14
Reduction
gear
Deep groove
ball bearing
Center gear
Fig. 5-15
O-ring groove on
the case
Reduction gear
O-ring (II)