BS ISO 3290-2:2014 pdf free.Rolling bearings – Balls Part 2: C eramic balls.
This part of ISO 3290 specifies requirements for finished silicon nitride balls for rolling bearings.
2 Normative references
The following documents, in wholu or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1132-1, Rolling bearings — Tolerances — Part .1: Terms and definitions
ISO 4288, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Rules and procedures for the assessment o[surface texture
ISO 5593, Rolling bearings — Vocabulary
ISO 12181-1, Geometrical product specifications (GPS) — Roundness — Part 1: Vocabulary and parameters of roundness
ISO 15241, Rolling bearings — Symbols for physical quantities
ISO 26602, Fine ceramics (advanced ceramics, advanced technical ceramics) — Silicon nitride materials for
rolling bearing balls
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1132-I, Iso 5593, and the following apply.
3.1 ball gauge
amount by which the mean diameter of ball lot should differ from the nominal ball diameter, this amount being one of an established series
Note I to entry: Each ball gauge is a whole multiple of the ball gauge interval established for the ball grade in question.
Note 2 to entry: A ball gauge, in combination with the ball grade and nominal diameter, is considered as the most exact ball size specification to be used by a customer for ordering purposes.
jSOURCE: ISO 5593:1997, 05.04.09, modified — Note I and Note 2 to entry have been added.J
3.2 ball gauge interval absolute difference of two consecutive ball gauges
3.3 ball grade specific combination of dimensional, form, surface roughness, and sorting tolerances for balls
Note 1 to entry: Ball grade is identified by the ltter G and a number, e.g G 20
[SOURCE: ISO 5593:1997, 05.04.08, modified一Note 1 to entry has been added.]
3.4 ball lot definite quantity of balls manufactured under conditions presumed uniform and which is considered as an entity
[SOURCE: ISO 5593:1997, 05.04.05]
3.5 ball subgauge amount of an established series of amounts, which is the nearest to the actual deviation from the ball gauge of a ball lot.BS ISO 3290-2 pdf free download.