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Tuesday, 19 May 2015

Life of a Bearing

Life of a Bearing Points : life of a bearings, life of a ball bearing, life of a wheel bearing Life of an personage ball (or roller) bearing can be define as number of revolutions (or hours at various given stable speed) which bearing runs before first facts of fatigue increase in material of one of rings or some of rolling elements. Rating life of a grouping of actually equal ball or roller bearings is definite as number of revolutions (or hours at various given stable speed) that 90 per cent of a group of bearings will whole or exceed before first evidence of fatigue develops (i.e. only 10 per cent of a group of bearings stop working due to fatigue).

The period smallest life is too use to indicate rating life. It has been found that life which 50 per cent of a group of bearings will whole or exceed is about 5 times life which 90 per cent of bearings will absolute or exceed. In other words, we can say that average life of a bearing is 5 times rating life (or minimum life). It can be noted that longest life of a single bearing is seldom longer than 4 times average life and maximum life of a single bearing is on 30 to 50 times the minimum life.

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