Miniature bearing tolerance and symbols

D to outside diameter tolerance symbols and meaning of the nominal diameter and inner diameter, as long as change D to 3 D. B width precision round width in one by one; C - outer ring width; T- One complete set of bearing width; Delta B, an inner ring width deviation, the expression is delta B. = B。 - B ( 1 - 5) In the type B, a single inner ring width. VB, an inner ring width changes. Expressions for VB B (B 1 - 6) According to the delta B, and VB, formula, it is easy to know delta C symbols. And VC. The implications of 4. To beat, 1) Basic symbol K radial beat one by one; S axial runout ( 面) Symbol K and S used in front. Angle under the following three symbols used in standard: a figure (I intemal) , often means the outer ring raceway in e ( extemal) , often refers to the outer race; A good bearing assembly (a. 组装) , that is, complete sets of bearings. ( 2) Complete set of bearing the rotating precision of K. One complete set of bearing inner ring radial runout K. One complete set of bearing outer ring radial runout S. One complete set of bearing inner ring end face a race to beat; S complete sets of bearing outer ring end face liquid beating ( 3) The location precision of ring S a benchmark inner ring end face diameter of beating S. - A surface bus for reference face changes of slope; S, one end of the race for parallelism within; 年代。 End of the outer raceway of parallelism; K, the fluid inside the internal changes in the thickness of the hole;