The service life of the bearing is affected by many parameters that are not controlled by the bearing manufacturers. For example, bearing mounting, temperature, exposure to external environment, lubricant cleanliness and electrical currents through bearings etc. High frequency PWM inverters can induce currents in a bearing, which can be suppressed by use of ferrite chokes.
The temperature and terrain of the micro-surface will determine the amount of friction by the touching of solid parts.
Certain elements and fields reduce friction, while increasing speeds.
Strength and mobility help determine the amount of load the bearing type can carry.
Alignment factors can play a damaging role in wear and tear, yet overcome by computer aid signaling and non-rubbing bearing types, such as magnetic levitation or air field pressure.