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Design of Anti-friction Bearing II

A ball bearin...

Question

A ball bearing is subjected to the aradial load of 10 kN, and an axial load 4 kN. The shaft rotates at 1200 r.p.m with average life of 5000 hr. is desired inner race rotation. The service factor is 1.5, $X = 0.48, Y = 1.3, V = 1.$

Dynamic load is _____ .

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Solution

$F_{r} = 10 k N, F_{a} = 4 k N, N = 1200 rpm$

$L_{90} = 5000 hr = 360 million revolutions$

$P_{e} = S (X V F_{r} + V F_{a})$

$S = 1.5, X = 0.48, Y = 1.3, V = 1$

$P_{e} = 15 k N,$

$L_{90} = (\frac{C}{P_{e}}) \Rightarrow C = 106.70 k N$

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