Nabtesco RV E Series, Руководство по эксплуатации

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Chapter 5 Installation
46
• If the hexagon socket head cap screw is tightened with the specified torque before performing
adjustment completely, it could cause deterioration of performance, such as vibration or torque
irregularity.
• For the pin/bolt clamping output shaft type, drill both a pin pilot hole for the reduction gear (case
section) and a hole on the case installation component simultaneously using a reamer, and then tap
the taper pin.
• When drilling holes using a reamer, masking is necessary so that cutting chips will not enter the
reduction gear.
(Reference: “4.2.3. Reduction gear mounting bolts”, “4.2.4. Serrated lock washer for hexagon socket
head cap screw”, “4.2.9. Taper pin with screw”, and “5.1. Bolt tightening torque”)

If the hexagon socket head cap screw is not tightened with the specified torque, the reduction gear
does not deliver the designed performance. In addition, it could cause injury and damage to the
customer’s device and the reduction gear.

If the installation accuracy of the reduction gear is poor (deviation in the gauge reading is excessive),
it could cause deterioration of performance, such as vibration or torque irregularity and durability.

For the two-crank shaft type, when only one spur gear of the reduction gear is turned by hand,
resistance becomes large in approximately two locations due to the phase relationship between the
crank shaft and RV gear. However, it is not a problem.

If the cutting chips are trapped in the reduction gear while drilling holes using a reamer, they could
adhere to the gear, and eventually cause deterioration of performance, such as abnormal noise,
vibration, and torque irregularity, and durability. Also, if the liquid sealant adheres to the lip of the oil
seal, it could cause leakage of the lubricant.
Fig. 5-33
Motor mounting flange
Serrated lock
washer
Hexagon socket
head cap screw
Dummy input gear
Taper pin
Reduction gear
Note