Miniature bearing common main terms

Miniature bearing common below the main terms in detail for you to introduce our common miniature bearing the main terms. Miniature bearing size series code: by miniature bearing width ( High) C series of code and diameter series code. Diameter series: refers to the corresponding to different diameter size series of the same miniature bearing diameter. 7 respectively,8,9,0,1,2,3,4,5 sequentially and outside diameter size. Width: refers to the corresponding to the width of the same diameter series of different size series, such as 8,0,1,2,3,4,5,6 width size increase one respectively. Clearance: refers to the miniature bearing, in the absence of load when a ring fixed, another ring relative to the fixed ring by the position of an extreme amount of moving to another location. Radial movement, known as the radial clearance, axial movement for axial clearance. Clearance is divided into 1,2,0,3,4,5 groups, such as increasing 1 set minimum clearance, in turn, general normal work of the miniature bearing, should first choose the 0 group clearance ( Not marked in code) 。 Basic rated life: refers to for a set of miniature bearing or a group under the condition of the same work, close to the same rolling miniature bearing, its life is with 90% reliability, commonly used materials and the processing quality and normal operation conditions related to life. Fixed rated life; Refers to consider the required reliability level, special miniature bearing performance and the specific operation conditions, and to modify the basic rated life and life. The radial basic dynamic load rating ( Cr) : refers to a set of miniature bearing the basic rating life expectancy of 1 million turn, supposed to withstand the constant radial load. To mini, single row angular contact ball bearings, guide the load up the radial displacement of the load produced by the miniature bearing ring to each other. The axial basic dynamic load rating ( Ca) : refers to the basic rating life of miniature bearing for 1 million turn supposed role in the center of the miniature bearing on constant axial load. Radial static load rating ( Cor) : refers to the miniature bearing under static or slowly rotating condition, its maximum load of rolling element and raceway contact center and contact stress of the following is the imaginary radial static load: 4600 mpa self-aligning ball miniature bearing; All other centripetal miniature bearing 4200 mpa; All the centripetal roller miniature bearing 4000 mpa. The axial static load rating ( Coa) : refers to the miniature bearing under maximum load caused by rolling element and raceway contact center and the contact stress of the following is the hypothetical center axial static load: 4200 mpa thrust ball miniature bearing; All thrust roller miniature bearing 4000 mpa. Transfer limit: refers to the vicarious under certain load and working conditions, lubrication and thermal equilibrium reaches are the highest speed. The content of the above is provided by bearing distributors, hope to be of help!