Page 608 - Rollingbearings

Loads

7 Needle roller bearings

Loads

Needle rollers and cage Drawn cup needle roller Needle roller bearings Alignment needle roller
assemblies bearings with machined rings bearings

Minimum load F = 0,02 C
rm
For additional
information
† page 106

Equivalent P = F r
dynamic bearing
load

For additional
information
† page 91

Equivalent static P = F r
0
bearing load
For drawn cup needle roller bearings, SKF recommends applying a static safety factor s ≥ 3, i.e. s = C /P ≥ 3.
0
0
0
0
For additional
information
† page 105
7 Symbols

A minimum load factor (product tables)
C basic dynamic load rating [kN] (product tables)
C basic static load rating [kN] (product tables)
0
d m bearing mean diameter [mm]
= 0,5 (d +D)
F a axial load [kN]
F am minimum axial load [kN]
F r radial load [kN]
F rm minimum radial load [kN]
n rotational speed [r/min]
P equivalent dynamic bearing load [kN]
P 0 equivalent static bearing load [kN]
s 0 static safety factor

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