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Equivalent dynamic bearing load

P = b (Fr + Y1Fa)when Fa/Fr ≤ e
P = b (0,67 Fr + Y2Fa)when Fa/Fr > e
The values of the factors e, Y1 and Y2 are product-related. The following guideline values of b have been established to take into account the type of operation and the demands of smooth running.
b = 1,1 ... 1,3for machines operating at constant speeds with high demands on smooth running and operational reliability
b = 1,3 ... 2for machines which are subjected to light shock loads and imbalance loads
b = 2 ... 4for machines which are subjected to heavy shock loads or where oscillating movement occurs
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