Tightening Torques - RK Rose+Krieger EP-II Notice D'assemblage

7. Life phases
7.2 Installation
7.2.1 General
•
Before installation, the corrosion protection at the shaft ends of linear units with drives must
be removed.
•
No cleaning agents may be allowed to enter the bearings.
•
When installing transmission elements such as clutches or motor adapters, blows to the shaft
ends or impacts to the drive pins must be avoided, in order to prevent the bearing becoming
damaged or imbalanced.
•
The linear unit must be secured on a level surface with a minimum accuracy of 0.20 mm/m
•
The linear unit must not be tensioned during installation.
•
Sufficient fixing points between the linear unit and the base must be chosen for the
application.
•
Loads to be moved by the linear unit must be correctly and adequately secured for the
application.
•
The high intrinsic weight of components and the linear unit generates dangers for persons
and property.
•
When installing a motor on the linear unit, take care to align the motor shaft and drive shaft
axially.

7.2.2 Tightening torques

Torque guidelines for metric shaft screws according to DIN EN ISO 4762 at 90 % use of the
0.2 %-expansion limit for a coefficient friction of 0.14.
Dimension
Tightening torque M
M4
M5
M6
M8
M10
38
Strength 8.8
(Nm) Tightening torque M
A
3.0
5.9
10
25
49
Strength 10.9
(Nm)
A
4.4
8.7
15
35
72
2
.
Strength 12.9
Tightening torque M (Nm)
A
5.1
10
15
43
84