Siemens SIMOGEAR BA 2030, Translation Of The Original Operating Instructions

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Service and maintenance
8.10 Checking tightness of fastening bolts
BA 2030
Operating Instructions, 02/2021, A5E37880173A/RS-AM
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NOTICE
Cleaning with a high-pressure cleaning appliance
Water can penetrate into the geared motor. Seals can become damaged.
Do not use a high-pressure cleaning appliance to clean the geared motor.
Do not use tools with sharp edges.
Switch off the power supply to the drive unit before cleaning it.
8.10 Checking tightness of fastening bolts
Gearbox and geared motor in an ATEX design
Loose parts can cause sparks through impact.
Entry of foreign bodies can cause sparks.
Note
Replace damaged headless bolts with new bolts of the same type and strength class.
Switch off the power supply to the drive unit. Check all fastening bolts for tightness using a
torque wrench.
The general tolerance for the tightening torque is 10%. The tightening torque is based on a
friction coefficient of μ = 0.14.
Table 8- 11 Tightening torques for fixing screws
Thread size Tightening torque for property class
8.8
10.9 12.9
Nm Nm Nm
M4 3 4 5
M5 6 9 10
M6 10 15 18
M8 25 35 41
M10 50 70 85
M12 90 120 145
M16 210 295 355
M20 450 580 690
M24 750 1 000 1 200
M30 1 500 2 000 2 400
M36 2 500 3 600 4 200