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NOTICE
When a simple V-belt drive is not available, to stay within the maximum allowable moment, a
jackshaft V-belt drive is required.
Belt drives must be carefully aligned. Motor and blower pulleys must be parallel to each other and in the
same plane within 1/16 inch. Belt tension should be carefully adjusted and belts tightened only enough to
prevent slippage.
NOTICE
The sheave should be positioned as close as possible to the drive cover. This will reduce the
overhung load and extend the bearing life.
On direct connected units, alignment and lubrication of the couplings to specifications of the coupling
manufacturer are very important. When mounted drives are supplied from the factory, proper alignment
has been established before shipment. However, during shipping, handling and installation, it is likely
that the alignment has been disturbed and final adjustment must be made before startup.
Synchronous-Belt Drive
– Synchronous belts are not recommended for usage on Gardner Denver
positive displacement blowers. Installation of synchronous belts is critical and can result in alignment,
tensioning and vibration problems, which contribute to higher than normal loads and stresses on the
blowers.
