Siemens SIMOTICS T-1FW6 Operating Instructions Manual page 78

Installation
5.6 Specifications for mounting torque motors
• To secure the screws, choose long clamping lengths l
l
calibrated torque wrench).
• Note the tightening torques specified in the table below.
• As a minimum, tighten the screws angle-controlled using a calibrated torque wrench with
the shortest possible bit insert; always tighten in diagonally opposite (180°) pairs.
You can increase the load capability of screw connections by employing an angle of rotation
or yield strength controlled tightening technique.
• Tighten all the screws to minimize the risk of them penetrating other materials.
Explanations:
I = Clamping length of the screw in mm
k
d = Nominal diameter of the screw in mm (e.g. M8 screw: d = 8 mm)
Screw material and tightening torques
Screws of varying strength classes are required to secure the motor to the machine structure.
The table below shows the required strength classes and tightening torques for the stator and
rotor fixing screws.
Table 5-4
1FW6050-xxB03-xxxx to
1FW6050-xxB15-xxxx
1FW6060-xxB03-xxxx to
1FW6060-xxB15-xxxx
1FW6090-xxB05-xxxx to
1FW6090-xxB15-xxxx
1FW6130-xxB05-xxxx to
1FW6130-xxB15-xxxx
1FW6150-xxB05-xxxx to
1FW6150-xxB15-xxxx
1FW6160-xxB05-xxxx to
1FW6160-xxB15-xxxx
1FW6160-xxB20-xxxx
1FW6190-xxB05-xxxx to
1FW6190-xxB15-xxxx
1FW6190-xxB20-xxxx
1FW6230-xxB05-xxxx to
1FW6230-xxB15-xxxx
1FW6230-xxB20-xxxx
76
/ d > 5 is not possible), check pretensioning of the screws at regular intervals (tighten with
k
Required strength classes and tightening torques for the stator and rotor
Motor
, l / d > 5 if possible; alternatively (if
k k
Screw
(strength class)
M6 (8.8)
M6 (8.8)
M5 (8.8)
M5 (8.8)
M6 (8.8)
M8 (8.8)
M8 (10.9)
M8 (8.8)
M8 (10.9)
M8 (8.8)
M8 (10.9)
Operating Instructions, 09/2022, A5E52220812B AA
Tightening torque
M in Nm
A
9
9
5.2
5.2
9
21.6
31.8
21.6
31.8
21.6
31.8
1FW6 built-in torque motors