Chapter 5 Installation
17
Chapter 5
Installation
This chapter describes the installation of this product.
Before installation, take care regarding the following precautions.
• Do not stand on top of the reduction gear or put anything on it.
• Be sure to install the reduction gear with the correct orientation.
Standing on top of the reduction gear or putting something on it could cause damage to the reduction
gear.
Installing the reduction gear with an incorrect orientation could cause damage to the customer’s
device and the reduction gear.
As the hollow section at the center of the reduction unit of the hollow shaft series is not designed to
allow a load, do not use the reduction gear in a way that applies a load to the hollow section. The oil
seals for the hollow section may be deformed, which could eventually cause leakage of the lubricant.
(Refer to Fig. 2-4, 2-5, and 2-6.)
Bolt tightening torque
5.1.
• Use the Nabtesco-recommended bolts for installing the reduction gear and tighten them with the
specified tightening torque.
• Use the serrated lock washer for hexagon socket head cap screw to prevent the bolt from loosening and
protect the bolt seat surface from flaws.
(Reference: “4.2.2 Reduction gear mounting bolts” and “4.2.3 Serrated lock washer for hexagon socket
head cap screw”)
If aluminum or stainless-steel is used for the bolt, limit the tightening torque. When tightening the bolt
with the limited torque, confirm that there is no strength problem by taking the transmission torque and
load moment into due consideration.
The following are the bolt tightening torques specified by Nabtesco. Be sure to check when tightening the
bolts.
When incorporating the reduction gear into customer's equipment
5.1.1.
Table 5-1
Nominal size × pitch (mm)
Tightening torque* (Nm)
Tightening force (N)
M5 × 0.8
9.01 ± 0.49
9,310
M6 × 1.0
15.6 ± 0.78
13,180
M8 × 1.25
37.2 ± 1.86
23,960
M10 × 1.5
73.5 ± 3.43
38,080
M12 × 1.75
129 ± 6.37
55,100
M14 × 2.0
205 ± 10.2
75,860
M16 × 2.0
319 ± 15.9
103,410
*The tightening torque values listed are for steel or cast iron material.
Note
Important
