3. Storage, Preparation,
Installation
www.nord.com B1000 -11-
3.4 Installing the gear unit
The eyebolts screwed into the gear units must be used during installation. The safety
notes in Section 1.4 must be observed.
The base and/or flange to which the gear unit is fitted should be vibration-free, torsionally strong
and flat. The smoothness of the mating surface on the base or flange must be according to
tolerance clad K of DIN ISO 2768-2. All contamination to the bolting surfaces of gear unit and
base and/or flange must be thoroughly removed.
The gear unit must be precisely aligned with the drive shaft of the machine in order to prevent
additional forces from being imposed on the gear unit due to tension.
Welding of the gear unit is prohibited. The gear unit must not be used as the earth connection for
welding work, as this may cause damage to the bearings and gear wheels.
The gear unit must be installed in the correct configuration (see Section 6.1) (UNIVERSAL
gear unit types SI and SIS are independent of the configuration). For changes to the
installation position, the vent plug and the oil level must be modified (see Section 6.1). All
gear unit feet and/or all flange bolts on each side must be used. Bolts must have a minimum
quality of 8.8. The bolts must be tightened to the correct torques (refer to Section 6.2 for torque
values). Tension-free bolting must be ensured, particularly for gear units with a foot and flange.
Danger!
To ensure that the gearbox does not get too warm and to avoid injury to persons,
observe the following during installation:
The surfaces of gear units or geared motors may become hot during or shortly after
operation. Attention: danger of burns!! Protection against accidental contact may need to
be installed.
With geared motors, the cooling air of the motor fan must be able to flow unobstructed
onto the gear unit.
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