Loads

	Deep groove ball bearings	Cylindrical roller bearings
Minimum load For additional information → Requisite minimum load	Perform calculations	Perform calculations
Axial load carrying capacity	Pure axial load → F_a ≤ 0,5 C₀ Small bearings¹⁾ and light series bearings²⁾ → F_a≤ 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	F_a/F_r ≤ e → P = F_r F_a/F_r > e → P = X F_r + Y F_a Perform calculations	P = F_r
Equivalent static bearing load For additional information → Equivalent static bearing load	P₀ = 0,6 F_r + 0,5 F_a P₀ < F_r → P₀ = F_r	P₀ = F_r

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

Symbols

C₀	basic static load rating for deep groove ball bearings [kN] (→ product table)
d_m	bearing mean diameter [mm] = 0,5 (d + D)
e	limiting value for deep groove ball bearings depending on the relationship f₀ F_a/C₀ (table 1)
f₀	calculation factor for deep groove ball bearings (→ product table)
F_a	axial load [kN]
F_r	radial load [kN]
F_rm	minimum radial load [kN]
k_r	minimum load factor → product tables: Deep groove ball bearings Cylindrical roller bearings
n	rotational speed [r/min]
n_r	reference speed for cylindrical roller bearings [r/min] (→ product table)
P	equivalent dynamic bearing load [kN]
P₀	equivalent static bearing load [kN]
X	radial load factor for deep groove ball bearings (table 1)
Y	axial load factor for deep groove ball bearings depending on the relationship f₀ F_a/C₀ (table 1)
ν	actual operating viscosity of the lubricant for deep groove ball bearings [mm²/s]