Shaft­mounted Gear Unit With Flanged Shaft; Fitting The Torque Arm For The Gear­unit Housing; Attaching The Torque Arm - Siemens FLENDER B3 E Series Assembly And Operating Instructions Manual

6.10 Shaft­mounted gear unit with flanged shaft
The front area of the flanged shaft must be absolutely free of grease.
This is essential for safe and reliable torque transmission. Do not use contaminated
solvents or dirty cloths for removing grease.
Before tightening the tensioning bolts it must be ensured that the flange centring
means are inserted one inside the other.
Then tighten diametrically opposed tensioning bolts to full torque.
The following tightening torque of flange bolts apply to gear units:
6.11 Fitting the torque arm for the gear­unit housing

6.11.1 Attaching the torque arm

The torque arm must be fitted stress­free on the machine side
Fig. 54: Torque arm for gear­unit housing
1 Machine side
Motors and torque arms should be fitted only in consultation with Siemens.
Foundation type for fastening the torque arm, see item 6.3.1, "Foundation".
Table 15: Tightening torques for flange connections
Gear­unit size
DIN 931
5 ... 6
7 ... 10
11 ... 16
17 ... 20
21 ... 22
BA 5033 EN 03/2011
Strength class
Bolt Nut
DIN 934
10.9 10
10.9 10
10.9 10
10.9 10
10.9 10
2 Support block
68 / 96
Tightening
torque
610 Nm
1050 Nm
2100 Nm
3560 Nm
5720 Nm
1
2