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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
Axial load carrying capacitySKF spherical roller bearings are able to accommodate heavy axial loads and even accommodate purely axial loads.
Bearings correctly mounted on an adapter sleeve on plain shafts without fixed abutment:

Fap = 0,003 B d

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 table)
bearing bore diameter [mm]
ecalculation factor (→ product table)
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 table)
Y0, Y1, Y2
calculation factors (→ product table)
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