Machine Design Databook, Second Edition

BEARING PRESSURE (FIG. 23-9)


Figure 23-9: Oil film pressure distribution in the full journal bearing.

General Electric Company's formula for bearing pressure in the design of motor and generator bearing


where P a in N/m 2 and ? m in m/s


where P a in psi and ? m in ft/min


where P a in kgf/mm 2 and ? m in m/s

Victor Tatarinoff's equation for safe operating load


where ? in cP, n in rpm, L, d, h, and c in in, W in lbf


where ? in Pa s, n ? in rps, L, d, h, and c in m, W in N

Victor Tatarinoff's equation for permissible unit pressure


where P in psi, ? 1 in cP, n in rpm, L and d in in


where P in Pa, ? in Pa s, n ? in rps, and L and d in m

H. F. Moore's equation for critical pressure


where P c in N/m 2 and ? in m/s


where P c in kgf/mm 2 and ? in m/s


where P c in psi and ? in ft/min

The critical unit pressure for any given velocity should not exceed according to Louis Illmer


where P c in N/m 2, ? m in m/s, and t in

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