Page 257 - Rollingbearings

Loads

1

Single row deep groove ball Double row deep groove ball
bearings with illing slots bearings

Symbols
C 0 basic static load rating [kN]
• single bearings (product tables, page 260)
• matched bearing pairs (Load carrying capacity of matched
bearing pairs)
F ≤ 0,6 F r Pure axial load → F ≤ 0,5 C 0 d m bearing mean diameter [mm]
a
a
= 0,5 (d + D)
e limit for the load ratio depending on the relationship f F /C
0
0 a
(table 9, page 257, and table 10, page 257)
f 0 calculation factor (product tables)
F a axial load [kN]
F r radial load [kN]
F rm minimum radial load [kN]
k r minimum load factor (product tables)
n rotational speed [r/min]
P equivalent dynamic bearing load [kN]
P 0 equivalent static bearing load [kN]
X calculation factor for the radial load (table 9)
Y, Y , Y 2 calculation factors for the axial load depending on the
1
relationship f F /C (table 9 and table 10)
0
0 a
ν actual operating viscosity of the lubricant [mm 2 /s]
F /F ≤ 0,6 and P ≤ 0,5 C 0 F /F ≤ e → P = F r
r
a
r
a
→ P = F + F F /F > e → P = X F + Y F a
r
a
r
a
r
F /F ≤ 0,6 → P = F + 0,5 F a P = 0,6 F + 0,5 F
a
r
0
0
a
r
r
P < F → P = F r
r
0
0

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