Installation
4.3 Thread sizes and tightening torques for fastening bolts
BA 2030 (2KJ4)
Operating Instructions, 07/2020, A5E50009094A/RS-AL
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4.3 Thread sizes and tightening torques for fastening bolts
The general tolerance for the tightening torque is 10%. The tightening torque is based on a
friction coefficient of μ = 0.14.
Table 4- 1 Tightening torques for fastening bolts
Thread size
Tightening torque for strength class
4.4 Gearbox with foot mounting
Impermissible housing loadings when unevenness present
Do not subject the gearbox to excessive stress when tightening the fastening bolts.
The foundation must be level and free from dirt.
The deviation in flatness of the gearbox's contact surface may not exceed the following
values:
For gearboxes up to size 89: 0.1 mm
For gearboxes from size 109: 0.2 mm.
The foundation should be designed in such a way that no resonance vibrations are created
and no vibrations are transmitted from adjacent foundations.
The foundation structure on which the gearbox is to be mounted must be torsionally rigid. It
must be dimensioned according to the weight and torque, taking into account the forces
acting on the gearbox. If the substructure is too weak, it will cause radial or axial
displacement offset during operation that cannot be measured at a standstill.
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