Machine Design_slide 15

Machine Design_slide 15 - ENGR3220MachineDesign...

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ENGR 3220 – Machine Design ENGR 3220 – Machine Design March 16 March 16 th th , 2011 , 2011 Bearings Bearings
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Bearings Bearings are manufactured to take pure radial loadings, pure thrust loads or combinations of these two loads. There are essential parts of a bearing: outer ring, separator, rolling element and inner ring.
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Types of Ball Bearings
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Types of Roller Bearings (a) Straight roller (b) Spherical roller (c) Thrust tapered roller (d) Needle roller (e) Tapered roller (f) Tapered roller
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Bearing life Bearing life is applied to measure of either the number of revolutions the inner ring ( the outer ring is stationary) until the first tangible evidence of fatigue or the total number of hours of use at a standard angular speed until the first tangible evidence of fatigue. Rating life Rating life is defined as the number of revolutions (or hours at a constant speed) that 90 percent of a group of bearings will achieve or exceed before the failure criterion develop. Median life
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This note was uploaded on 04/16/2011 for the course ENGR 3220 taught by Professor Turro during the Spring '11 term at UOIT.

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Machine Design_slide 15 - ENGR3220MachineDesign...

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