Technical Specifications; Tightening Torques For Screw And Bolt Connections - Siemens 1PH818 Operating Instructions & Installation Instructions

Technical specifications

B.1

Tightening torques for screw and bolt connections

Bolt locking devices
● Refit nuts or bolts that are mounted together with locking, resilient, and/or force-distributing
● When screwing together threads secured with a liquid adhesive, use a suitable medium
● Always use suitable securing devices or removable adhesives (e.g., Loctite 243) when
Tightening torques
The bolted connections with metal contact surfaces, such as end shields, bearing cartridge
parts, terminal box parts bolted onto the stator frame, should be tightened to the following
torques, depending on the thread size:
Table B-1 Tightening torques for screw/bolt connections with a tolerance of ±10%
Case M4 M5
A 1.2 2.5
B 1.3 2.6
C 3 5
SIMOTICS M-1PH8 1PH818., 1PH822.
Operating Instructions 07/2016
elements with identical, fully-functional elements when re-assembling. Always renew keyed
elements.
such as Loctite 243.
installing fixing bolts with a clamping length of less than 25 mm. The clamping length is
taken as the distance between the head of the bolt and the point at which the bolt is screwed
in.
M6 M8 M10
4 8 13
4.5 11 22
8 20 40
M12 M16 M20 M24
20 40 52 80
38 92 180 310
70 170 340 600
M30 M36 M42 M48
150 - -
620 1080 1700 2600
1200 2000 3100 4700
B
M56
- - Nm
4200 Nm
7500 Nm
133