BS ISO 3096:2018 pdf download

BS ISO 3096:2018 pdf download

BS ISO 3096:2018 pdf download.Rolling bearings — Needle rollers — Boundary dimensions, geometrical product specifications (GPS) and tolerance values
1 Scope
This document specifies dimensional and geometrical characteristics, nominal boundary dimensions and tolerance values for finished steel needle rollers used as rolling elements.
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 1101, Geometrical product specifications (GPS) — Geometrical tolerancing — Tolerances of form,orientation, location and run-out
ISO 5593, Rolling bearings — Vocabulary
ISO 14405-1, Geometrical product specifications (GPS) — Dimensional tolerancing — Part 1: Linear sizes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1101, ISO 5593, ISO 14405-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
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3.1 needle roller diameter gauge
diameter deviation range limited by the upper and lower limits of ∆Dwmp
Note 1 to entry: A gauge is designated by the upper and lower limit deviation expressed in micrometres, for example –2 –4.
Note 2 to entry: For ∆Dwmp, see Table 1.
3.2 needle roller diameter gauge lot
quantity of needle rollers, of the same needle roller grade and nominal dimensions, all having a mid-range size of needle roller diameter Dwmp within the same needle roller diameter gauge
Note 1 to entry: Needle rollers of any needle roller grade and nominal dimensions are supplied in diameter gauge lots as given in Table 3.
Note 2 to entry: For Dwmp, see Table 1.
4 Symbols
To express that the ISO/GPS system as specified in ISO 8015 is applied, the dimensional and geometrical characteristics shall be included in the technical product documentation (for example, on the drawing). The dimensional and geometrical specifications associated to these characteristics are described in Table 1, Figure 1 and Figure 2. Descriptions for symbols are in accordance with GPS terminology. Relationships with traditional terms are described in Table A.1. A tolerance value associated to a characteristic is symbolized by t followed by the symbol for the characteristic, for example t ∆Dwmp . In this document, the ISO default specification operator for size is in accordance with ISO 14405-1, i.e. the two-point size is valid.