Loads


Deep groove ball bearingsCylindrical roller bearings

Minimum load

For additional information → Requisite minimum load

Perform calculations

Perform calculations

Axial load carrying capacity

Pure axial load → Fa ≤ 0,5 C0

Small bearings1) and light series bearings2) → F≤ 0,25 C0


Excessive axial load can lead to a considerable reduction in bearing service life.

Equivalent dynamic bearing load

For additional information → Equivalent dynamic bearing load

Fa/Fr ≤ e → P = Fr

Fa/Fr > e → P = X Fr + Y Fa

Perform calculations

P = Fr

Equivalent static bearing load

For additional information → Equivalent static bearing load

P0 = 0,6 Fr + 0,5 Fa

P0 < Fr → P0 = Fr

P0 = Fr


1) d ≤ 12 mm
2) Diameter series 8, 9, 0, and 1

Symbols

C0basic static load rating for deep groove ball bearings [kN] (→ product table)
dmbearing mean diameter [mm]
= 0,5 (d + D)
elimiting value for deep groove ball bearings depending on the relationship f0 Fa/C0 (table 1)
f0calculation factor for deep groove ball bearings (→ product table)
Faaxial load [kN]
Frradial load [kN]
Frmminimum radial load [kN]
krminimum load factor → product tables:
nrotational speed [r/min]
nrreference speed for cylindrical roller bearings [r/min] (→ product table)
Pequivalent dynamic bearing load [kN]
P0equivalent static bearing load [kN]
Xradial load factor for deep groove ball bearings (table 1)
Yaxial load factor for deep groove ball bearings depending on the relationship f0 Fa/C0 (table 1)
νactual operating viscosity of the lubricant for deep groove ball bearings [mm2/s]
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