The friction in a rolling bearing is made up of several components, see table below. Due to the large number of influencing factors, such as dynamics in speed and load, tilting and skewing resulting from installation, actual frictional torques and frictional power may deviate significantly from the calculated values.
| Frictional component | Influencing factor |
|---|---|
| Rolling friction | Magnitude of load |
|
Sliding friction of rolling elements Sliding friction of cage |
Magnitude and direction of load Speed and lubrication conditions, running-in condition |
|
Fluid friction (flow resistance) |
Type and speed Type, quantity and operating viscosity of lubricant |
| Seal friction | Type and preload of seal |