Correction of limit speed

Source: China Bearing Network Time: 2013-03-26

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The load condition C/P<13 (ie, the equivalent dynamic load P exceeds 8% of the fundamental additional dynamic load C); or the axial load in the accepted component load exceeds 25% of the radial load; The speed is corrected.
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Na=f1*f2*n
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Here;
Na: limit speed after correction; rpm
F1: Correction coefficient related to load conditions (Fig. 8.1)
F2: Correction coefficient related to the composition load (Fig. 8. 2)
n : limit speed under normal load conditions; rpm (refer to bearing scale table)
C: fundamental extra dynamic load; N{kgf}
P : equivalent dynamic load; N{kgf}
Fr: radial load; N{kgf}
Fa: axial load; N{kgf}

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