Machine Design Databook, Second Edition

INFLUENCE OF END LEAKAGE

Leakage factors C W, C F and C ?

Refer to Fig. 23-28 for C W, C F, and C ? for various values of B/L ratios


Figure 23-28: Kingsbury's leakage factors as function of B/L ratios under minimum friction. [Kingsbury 6]

Load leakage factor according to Kingsbury 6


Refer to Fig. 23-28 for C W

Load leakage factor C W as a function of B/L ratio for a slider bearing having q = ( h 1/ h 2) ?1 = 1 or h 1 = 2 h 2

Refer to Table 23-16.

Table 23-16: Load leakage factor C W as a function of B/L ratio for a slider bearing having the quality q equal to unity

B/L

C W

B/L

C W

0.00

1.00

1.00

0.44

0.175

0.92

1.50

0.278

0.25

0.835

2.00

0.185

0.50

0.68

3.00

0.090

0.75

0.55

4.00

0.060

Load leakage factor for 120 , centrally loaded partial bearing according to Needs 7

Refer to Fig. 23-29 for C W for various attitudes ?.


Figure 23-29: Leakage factors for load for 120 centrally partial journal bearings for various attitudes. [Needs 7]

Load correction factor for side flow according to Boyd and Raimondi 24

Refer to Fig. 23-30 for C W for various minimum oil film thickness variables ?.


Figure 23-30: Load correction factor (C W) for side flow.

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