OMEC MOTORS
OMT1 & OMT2 Mounting & Maintenance Instructions
Page 5
4.3.
Shaft couplings and pulleys etc.
Remove the corrosion protection from the shaft extension and the coupling elements. The
coupling parts, belt pulleys and gear wheels need to be dynamically balanced and fit easily
on the shaft and to be provided with good fitting keyway.
In the factory the rotor has already been dynamically balanced including a half key in the
shaft.
The dimension and the tolerances of the shaft extension and the key are indicated on the
motor dimension sheet.
Assembling the coupling elements has to been done with great care. Careless
handling may damage the bearings, shaft or end shields.
Do not file or grind the shaft to achieve a fit!
When fitting pulleys couplings or bearings, we recommend using heat to elements;
therefore the part to be mounted has to be heated till ± 110 degrees above the ambient
temperature.
A large washer and set screw can be useful for pushing on pulleys using the tapped hole in
the shaft. Only use proper tools for removing the above mentioned parts e.g. pulley
drawers.
