ISO 15:2017 pdf free.Rolling bearings一Radial bearings一Boundary dimensions, general plan.
1 Scope
This document specifies preferred boundary dimensions for radial bearings of the diameter series 7,8,
9, 0, 1, 2,3 and 4.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 464, Rolling bearings — Radial bearings with locating snap ring — Dimensions, geometrical product specifications (GPS) and tolerance values
Iso 5593, Rolling bearings — Vocabulary
ISO 12043, Rolling bearings — Single-row cylindrical roller bearings — Chamfer dimensions for loose rib and non-rib sides
ISO 12044, Rolling bearings — Single-row angular contact ball bearings — Chamfer dimensions for outer ring non-thrust side
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5593 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electroped Ia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
4 Symbols
For the purposes of this document, the symbols given in ISO 15241F1 and the folLowing apply.
The symbols shown in Figure 1 and given in Tables 1 to denote nominal dimensions, unless specified otherwise.
5 Boundary dimensions
Boundary dimensions for radial bearings of the diameter series 7, 8, 9, 0, 1, 2, 3 and 4 are given in Tables 1 to .
The chamfer dimensions given in Tables 1 to 8 do not always apply to the following:
— the groove side of bearing rings with snap ring groove (these shall be in accordance with ISO 464);
— the loose rib and the non-rib sides of cylindrical roller bearing rings (the exceptions shall be in accordance with ISO 12043);
— the non-thrust side of angular contact bearing outer rings (these shall be in accordance with
ISO 12044).
Chamfer dimension, r, applies at the corners indicated in Figure 1 and is specified with r5 mm fl
Tables 1 to 8.
The chamfer dimensions for inner rings of bearings with tapered bore may be smaller than those shown in Tables 1 to 8.
The corresponding largest single chamfer dimensions to the rs mm dimensions in Tables 1 to 8 are given in ISO 582[2].
Al General
For any new dimension not numerically determined in this document, the following guidelines should be used. The equations given for outside diameter and width should not, however, be used for definite determination of the boundary dimension values; they may often need to be modified in order to maintain the continuity of this document to obtain suitable bearing proportions, and to permit the selection of preferred dimensions.
Accordingly, it is intended that any new dimensions be approved by future revisions of this document.
A.2 Bearing bore diameters
Bearing bore diameters, d, of inner rings, larger than 500 mm, should be selected from the R 40 series of preferred numbers given in ISO 3W.
Bearing bore diameters already appearing in this document should be chosen for preference.
New bearing width dimensions should be selected from the R 80 series of preferred numbers given
in ISO 3[1], with a value nearest to the calculated width value, and, if necessary, rounded as shown in Table A.4. In case the calculated value is halfway between two R 80 values, the larger R 80 value should be selected.ISO 15 pdf download.