Question
A self-aligning ball bearing has a basic dynamic load rating (C10, for 106 revolutions) of 35 kN. If the equivalent radial load on the bearing is 45 kN, the expected life (in 106 revolutions) is
Options :
below 0.5
0.5 to 0.8
0.8 to 1.0
above 1.0
Answer :
below 0.5
Solution :
C = 35 kN
PC = 45 kN
L90 = (C/PC)3 = (35/45)3 = 0.4705 MR
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