A 2.5 x 2.5-inch sleeve bearing uses grade 20 lubricant. The axial-groove sump has a steady-state temperature of 95°F. The shaft journal has a diameter of 2.500 in with a unilateral tolerance of -0.001 in. The bushing bore has a diameter of 2.504 in with a unilateral tolerance of 0.001 in. The journal speed is 900 rev/min and the radial load is 1400 Ibf. 1) Estimate the film temperature. 2) Estimate the minimum film thickness. 3) Estimate the eccentricity. 4) Estimate the coefficient of friction.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A 2.5 x 2.5-inch sleeve bearing uses grade 20 lubricant. The axial-groove sump has a steady-state temperature of
95 F. The shaft journal has a diameter of 2.500 in with a unilateral tolerance of -0.001 in. The bushing bore has a
diameter of 2.504 in with a unilateral tolerance of 0.001 in. The journal speed is 900 rev/min and the radial load is 1400
Ibf.
1) Estimate the film temperature.
2) Estimate the minimum film thickness.
3) Estimate the eccentricity.
4) Estimate the coefficient of friction.
Transcribed Image Text:A 2.5 x 2.5-inch sleeve bearing uses grade 20 lubricant. The axial-groove sump has a steady-state temperature of 95 F. The shaft journal has a diameter of 2.500 in with a unilateral tolerance of -0.001 in. The bushing bore has a diameter of 2.504 in with a unilateral tolerance of 0.001 in. The journal speed is 900 rev/min and the radial load is 1400 Ibf. 1) Estimate the film temperature. 2) Estimate the minimum film thickness. 3) Estimate the eccentricity. 4) Estimate the coefficient of friction.
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