ABMA 10285:2009 pdf download

ABMA 10285:2009 pdf download.Rolling bearings — Sleeve type linear ball bearings — Boundary dimensions and tolerances
1 Scope
This International Standard specifies the boundary dimensions, tolerances and definitions for sleeve type linear motion ball bearings. It is applicable to the size ranges covered by Table 1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the reference document (including any amendments) applies. ISO 1132-1, Rolling bearings — Tolerances — Part 1: Terms and definitions ISO 5593, Rolling bearings — Vocabulary ISO 13012, Rolling bearings — Linear motion, recirculating ball, sleeve type — Accessories ISO 15241, Rolling bearings — Symbols for quantities
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1132-1, ISO 5593 and the following apply. 3.1 sleeve type linear ball bearing linear motion ball bearing incorporating an outer sleeve with a number of closed loops of recirculating balls, which is designed to achieve unlimited linear motion along a shaft 3.2 shaft basically cylindrical rod along which a linear ball bearing traverses 3.3 nominal bore diameter of ball complement diameter of the theoretical cylinder inscribed inside all of the balls 3.4 nominal outer sleeve width distance between two theoretical end faces designated to bound the width of the linear ball bearing 3.5 radial runout difference between the largest and the smallest of the radial distances between the outside surface of the cylindrical outer sleeve and the centreline of the bore diameter of ball complement 3.6 closed sleeve type linear ball bearing sleeve type linear ball bearing in which the outer sleeve is continuous or virtually continuous, whereby adjustment of clearance between the bore diameter of ball complement and a shaft is achieved, in most cases, by selection of the housing fit, a shaft diameter and the bore diameter of ball complement of the bearing 3.7 adjustable sleeve type linear ball bearing sleeve type linear ball bearing which has elastic features which permit mechanical adjustment of the clearance between the bore diameter of ball complement and a shaft 3.8 open sleeve type linear ball bearing sleeve type linear ball bearing in which a longitudinal section is removed to provide clearance over a shaft and shaft support rail unit
4 Symbols
For the purposes of this International Standard, the symbols given in ISO 15241 and the following apply. The symbols (except those for tolerances) shown in Figures 1 and 2 and the values given in Tables 1 to 9 denote nominal dimensions, unless specified otherwise. b snap ring groove width C outer sleeve width C s single outer sleeve width C 1 distance between outer faces of outer sleeve snap ring grooves C 1s single distance between outer faces of outer sleeve snap ring grooves D bearing outside diameter D 1 snap ring groove diameter d outside diameter of shaft E width of sector opening at diameter F w of open sleeve type bearing F w bore diameter of ball complement F ws single bore diameter of ball complement F ws min smallest single bore diameter of ball complement 1) K ea radial runout of assembled bearing α angle of sector opening (included angle) of open sleeve type bearing
6 Tolerances
6.1 Classes The degrees of precision to which linear ball bearings are manufactured are defined as tolerance classes L9, L7, L7A, L6, L6A, L6J and L6JA. The tolerance values are tabulated in Tables 2 to 8. For an overview of the basis for the tolerance values, see Annex A. Tables 2 to 8 have been established on the basis of listing all the linear ball bearing tolerances for a given nominal bore diameter of ball complement (F w ) . 6.2 Applicability ⎯ Tolerance class L9 shall be applicable to series 1, closed and adjustable sleeve type bearings. ⎯ Tolerance classes L7 and L6 shall be applicable to series 1 and 3, closed sleeve type bearings. ⎯ Tolerance classes L7A and L6A shall be applicable to series 3, open and adjustable sleeve type bearings. ⎯ Tolerance class L6J shall be applicable to series 5, closed sleeve type bearings. ⎯ Tolerance class L6JA shall be applicable to series 5, open and adjustable sleeve type bearings. 6.3 Shaft tolerances For the proper functioning and performance of sleeve type linear ball bearings, it is essential that they are matched with shafts having dimensional and geometrical tolerances that are matched to the size and series of the sleeve type linear ball bearing being used. Full details for the shafts suitable for use with the sleeve type linear ball bearings in this International Standard are specified in ISO 13012.