Bearing Load Calculator

Inputs

Radial load (Fr)

Load acting perpendicular to the bearing axis.

Axial load (Fa)

Thrust load acting along the bearing axis.

Dynamic radial factor (X)

Catalog dynamic equivalent-load radial factor for the selected bearing and Fa/Fr range.

Dynamic axial factor (Y)

Catalog dynamic equivalent-load axial factor for the selected bearing and Fa/Fr range.

Static radial factor (X0)

Catalog static equivalent-load radial factor.

Static axial factor (Y0)

Catalog static equivalent-load axial factor.

Dynamic load rating (C)

Basic dynamic load rating from the bearing catalog.

Static load rating (C0)

Basic static load rating from the bearing catalog.

Target static safety (S0,target)

Desired C0/P0 static safety factor for standstill or shock loading.

Default result

Static safety factor(S0)

Pass

Compare C0/P0 against the target static safety factor.

S0 = C0 / P0.

Also computed

Equivalent dynamic load(P)5,000N

5 kN · 1,124 lbf

P = X*Fr + Y*Fa, not less than Fr.

Equivalent static load(P0)5,000N

5 kN · 1,124 lbf

P0 = X0*Fr + Y0*Fa, not less than Fr.

Dynamic load ratio(P/C)0.1667

Required C0(C0,req)7,500N

7.5 kN · 1,686 lbf

Vector resultant load(sqrt(Fr^2+Fa^2))5,220N

5.22 kN · 1,174 lbf

Method notes 3 notes

Use X, Y, X0 and Y0 from the bearing manufacturer for the exact bearing type, contact angle, load direction and Fa/Fr range.
The dynamic equivalent load P is the input for the L10 bearing life calculator. This page focuses on combining radial and axial load into catalog load ratings.
Static safety is most relevant at standstill, low speed, shock load or high peak load. It does not check lubrication, misalignment, preload, temperature or housing/shaft fits.