Analysis of jiaxing ball bearing load and the definition of life

Introduces the definition of jiaxing ball bearing load and life ball bearing basic static load rating: the so-called basic static load rating, defined as under strong load of rolling body contact with the track of the central reaches 4200 mpa, the contact stress of the static load. Under the contact stress of roller and track is the total permanent deformation of the roll diameter is about 0. 0001 times. So-called equivalent static load, defined as 'will produce same as the actual load conditions of contact stress of contact stress of the static load'. Ball bearing rated life: 'the so-called rated life' refers to a set of identical bearing under the condition of the same operation, of which 90% of bearing before the material damage due to rotating fatigue can rotate, the total number of revolution. That is to say, rated life are extracted from a batch of the sample group of any number of bearings, rotate under certain conditions, to 90% of this bearing before produce material peeling off, still can rotate, the total number of revolution. Ball bearing: equivalent dynamic load is defined as 'to achieve the same as the actual load and rotating under the condition of the direction of life, imposed on the bearing and the size of a certain load'.