Equivalent Bearing Load

Equivalent bearing load

Clearance

Radial bearing load F_r

Axial bearing load F_a

Factor f₀

Static load rating C₀

Factor f₀ F_a / C₀

Factor e

Factor X

Factor Y

Equivalent dynamic load P = X Fr + Y Fa

If the bearing is subjected to a radial load solely then P=Fr. For deep groove ball bearings it appears that P=Fr as long as Fa/Fr<e where Fa being the axial load and Fr the radial load. If Fa/Fr>e then the equivalent bearing load P is calculated using P=XFr+YFa where X and Y depend on the type of bearing. For deep groove ball bearings the values of e, X and Y are derived from the table below.

A bearing clearance larger than Normal (C3 and C4) makes the bearing less sensitive to axial loads at the cost of radial play.

Default values of f₀ and C₀ are set for bearing number 16004. Refer the SKF bearing data tables for alternative bearing numbers. Select one of the bearings from the table, the value of f_o is displayed after selection.

For statically loaded single row deep groove ball bearings the equivalent static bearing load P₀ should be used according: P₀ = 0.6 F_r + 0.5 F_a. If P₀< F_r then P₀= F_rshould be used.