Minimum load

For additional
(→ Requisite minimum load)
Pm = 0,01 C0

Oil lubricated bearings:

n/nr ≤ 0,3 → Pm = 0,003 C0

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 capacitySKF spherical roller bearings are able to accommodate

heavy axial loads and even purely axial loads.
Bearings mounted on an adapter sleeve on plain shafts

without 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 = 0,67 Fr + Y2 Fa

Perform calculations
Equivalent static bearing load

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

Bbearing width [mm]
basic static load rating [kN] (→ product tables)
bearing bore diameter [mm]
ecalculation factor (→ product tables)
Faaxial load [kN]
Fapmaximum permissible axial load [kN]
Frradial load [kN]
Pequivalent dynamic bearing load [kN]
P0equivalent static bearing load [kN]
equivalent minimum load [kN]
rotational speed [r/min]
reference speed [r/min] (→ product tables)
Y0, Y1, Y2
calculation factors (→ product tables)
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