LUBRICATION OF MACHINE ELEMENTS P3

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LUBRICATION OF MACHINE ELEMENTS P3

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Fig. 21.50 Chart for determining optimal film thickness. (From Ref. 28.) (a) Grooved member rotating, (b) Smooth member rotating. 6. Calculate R1 = { AcP0 }112 hr [3T7K - Co0)[I - (K2/*,)2]] If R1Ih,. 10,000 (or whatever preassigned radius-to-clearance ratio), a larger bearing or higher speed is required. Return to step 2. If these changes cannot be made, an externally pressurized bearing must be used. 7. Having established what ar and Ac should be, obtain values of K00, Q, and T from Figs. 21.62, 21.63, and 21.64, respectively. From Eqs. (21.29), (21.30), and (21.31) calculate Kpt Q, and Tr. 8....

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