HBM T40B Mounting Instructions page 17

T40B
2. For the bolted rotor connection (see Fig 4.1), use six or eight DIN EN ISO
4762 hexagon socket screws of the property class stated in Table 4.1, in a
suitable length (dependent on the connection geometry, see Table 4.1 on
page 18).
We recommend DIN EN ISO 4762 socket head cap screws, blackened,
smoothheaded, permitted size and shape variance in accordance with DIN
ISO 4759, Part 1, product class A.
Important
If alternating loads are expected, use threadlocker (medium strength, e.g.
LOCTITE No. 242) to glue the screws into the counter thread to exclude
prestressing loss due to screw slackening.
3. Fasten all screws with the specified torque (Table 4.1 on page 18).
4. There are eight tapped holes on the rotor for the further mounting of the
shaft run. Also use screws of property class 10.9 or 12.9 and fasten them
with the torque specified in Table 4.1.
Important
If alternating loads are expected, use threadlocker (medium strength, e.g.
LOCTITE No. 242) to glue the screws into the counter thread to exclude
prestressing loss due to screw slackening.
NOTE
Comply with the maximum thread reach as per Table 4.1. Otherwise signific­
ant measurement errors may result from torque shunt, or the transducer may
be damaged.
Measuring range
NVm
200
500
1k
2k
A3452-4.0 en/de
Fastening screws
1)
Z Property class
M8
M10
M10
M12
Prescribed tightening
10.9
17
moment
NVm
34
67
67
115
HBM