4
Mechanical installation
Prerequisites for installation
Assembly and Operating Instructions – Explosion-Proof Gear Units
31
4.2.6
Output power and output torque
Observe the nominal output torque and the permitted overhung loads.
4.3
Prerequisites for installation
Check that the following conditions have been met:
•
The drive has not been damaged during transportation or storage.
•
The entries on the nameplate of the gearmotor match the voltage supply system.
•
The ambient temperature corresponds to the specifications in the technical docu-
mentation, the nameplate and the lubricant table in chapter Lubricants.
•
No harmful oils, acids, gases, vapors, radiation etc. are present in the environ-
ment.
•
The oil seals on the output end are protected against wear in abrasive ambient
conditions.
•
In case of helical-worm gear units and SPIROPLAN
®
W gear units: Make sure that
no large external mass moments of inertia are present, which could exert a
retrodriving load on the gear unit. In this respect, observe the following formula:
η’ (retrodriving) = 2 - 1/η
Self-locking if n’ < 0.5!
•
In case of
special designs
, make sure that the drive is designed according to the
ambient conditions. Observe the information on the nameplate.
24804134/EN – 05/2018
