how to press fit bearings

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When a bushing or bearings are pressed into a housing,the force driving the bushing /bearing should be applied equally or uniform to the end of the bearingto avoid galling,peening or damaging the bushing /bearing. The mating surfaces of both the bushing and housing should be thoroughly cleaned and imperfections as well as burrs removed. …

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  • What is press fit in bearings?

  • As a quick review, press fit is defined as the value of interference between the shaft and the inside diameter of the bearing, or the housing bore and the outside diameter of the bearing when installed. Why is press fit important in bearing selection?

  • How to maintain the bushing/bearing properly?

  • When a bushing or bearings are pressed into a housing, the force driving the bushing / bearing should be applied equally or uniform to the end of the bearing to avoid galling, peening or damaging the bushing / bearing. The mating surfaces of both the bushing and housing should be thoroughly cleaned and imperfections as well as burrs removed.

  • What happens if you don鈥檛 press fit a steel bearing?

  • Failing to do so when press-fitting a steel bearing in an aluminum housing, for example, could result in the latter expanding more than the steel鈥攁nd the bearing falling out. According to Rupprecht, die-cast metals and glass-fiber-reinforced plastics are brittle materials and must be press-fit with the exact amount of force.

  • Can a preload bearing be slip fit?

  • A press fit of either element would throw off the preload. For example, a pair of duplex preload-ground angular contact bearings for spindles, ballscrews, etc are slip fit in both the housing and the shaft.

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