When permanent fixtures are attached to both thrust plates, a tapped hole should be provided for a rotor lock.
Interference-fit pilots on either the outside diameter or the inside diameter of the thrust plates are not recommended. If highly concentric diameters are needed on the fixture plate, they should be ground in place. If it is necessary to guide on either the outside diameter or the inside diameter, keep the pilot short (0.25″ long or less) and maintain a slip fit. Do not press fit anything into the bore.
We discourage use of a drawbolt through the bearing’s central hole, since it may distort the rotor. If a drawbolt is unavoidable, keep the tension low.
Provide for dynamic balancing. We use twelve 10-32 holes on as large a radius as possible.