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Minimum load

For additional
(→ Requisite minimum load)
Obtain the axial drive-up distance

Perform calculations

The weight of the components supported by the bearing, together with external forces, generally exceed the requisite minimum load. If this is not the case, the bearing must be subjected to an additional radial load.

Axial load carrying capacityBearings mounted on an adapter sleeve on plain shafts without a fixed abutment:

Fap = 0,003 B d

provided the bearings are correctly mounted.
Equivalent dynamic bearing load

For additional
(→ Equivalent dynamic bearing load)
Fa/Fr ≤ e → P = Fr + Y1 Fa

Fa/Fr > e → P = 0,65 Fr + Y2 Fa

Perform calculations
Equivalent static bearing load

For additional
(→ Equivalent static bearing load)
P0 = Fr + Y0 Fa


Bbearing width [mm]
bearing bore diameter [mm]
dmbearing mean diameter [mm]
= 0,5 (d + D)
ecalculation factor (→ product tables)
Faaxial load [kN]
Fapmaximum permissible axial load [kN]
Frradial load [kN]
Frmminimum radial load [kN]
krminimum load factor (→ product tables)
rotational speed [r/min]
equivalent dynamic bearing load [kN]
equivalent static bearing load [kN]
Y0, Y1, Y2
calculation factors (→ product tables)
νoil viscosity at operating temperature [mm2/s]
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