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Rolling Contact Bearings

Nomenclature L 10 rated life at reliability of 90%, rev
L rated life in hours at reliability of
10h
A axial load, N 90%, h
C basic dynamic load rating, N L n bearing life at diffident reliability, h
C 0 basic static load rating, N [L ] allowablelifeinhours, h
h
e factor N i reaction force, N
F external axial load, or thrust force, n rotational speed, rpm
a
N P equivalent dynamic load, N
F external radial load, or radial force, P equivalent static load, N
r 0
N P resolved radial load component, N
i
f load factor R radial load on bearing, N
p
f t temperature factor r 1 radius of bore, mm
H total operating hours under variable r 2 radius of rolling elements, mm
loads, h r radius of outer ring, mm
3
L h bearing life in hours, h r 4 radius of retainer, mm
Analysis and Design of Machine Elements, First Edition. Wei Jiang.
© 2019 John Wiley & Sons Singapore Pte. Ltd. Published 2019 by John Wiley & Sons Singapore Pte. Ltd.
Companion website: www.wiley.com/go/Jiang/analysis_of_machine_elements