Apply force through the fitted ring
Press force must pass through the ring being mounted, never through rolling elements or the cage. A mounting sleeve distributes force and reduces local brinelling.
Heat only within a controlled process
Induction heating can ease interference fitting, but temperature distribution, maximum temperature and demagnetisation must be controlled. Open flame is not an acceptable bearing-heating method.
Preload requires a measurable result
Angular contact and tapered bearings require defined axial setting. Measure clearance, starting torque or displacement according to the approved procedure rather than tightening by feel.