ISO 3245-2015 pdf free.Rolling bearings一Needle roller bearings with drawn cup and without innerring – – Boundary dimensions, geometrical product specifications [GPS] and tolerance values.
ISO 3245 specifies the boundary dimensions and preferred dimensions to be used for drawn cup needle roller bearings without inner ring as well as the minimum chamfer dimension limits. Also specified are the closed end thickness dimensions for hearings with one closed end.
In addition, dimensional tolerances for the needle roller complement bore diameter and tolerances for the drawn cup width are specified.
Informative values for the tolerances for shaft raceway and housing bore are given in AnnexA.
2 Normative references
The following documents, in whole 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 5593, Rolling bearings — Vocabulary
ISO 10579, Geometrical product specifications (GPS) — Dimensioning and tolerancing — Non-rigid parts
ISO 14405-1, Geometrical product specifications (GPS) — Dimensional tolerancing — Part 1: Linear sizes
ISO 15241, Rolling bearings — Symbols for physical quantities
I SO/TS 17863, Geometrical product specification (GPS) — Tolerancing of moveable assemblies
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1132-1, ISO 5593, ISO 14405-1 and the following apply.
3.1 constraint diameter
diameter of the feature used in constraint condition to establish iFws characteristics Note 1 to entry: It corresponds to the diameter of the ring gauge in ISO 1132-2.111
4 Symbols
For the purposes of this document, the symbols given in ISO 15241 and the following apply.
Descriptions for symbols are in accordance to GPS terminology. The dimensional specifications are described in Table 1 and Figure 1.
Figure 1 presents the dimensioning associated to a needle roller bearing, using the symbols introduced in Table 1.
Tolerance value associated to a characteristic is symbolized by t followed by the symbol olcharacteristic, for example,
In this International Standard, the ISO default specification operator for size is according to ISO 14405-1; i.e. the two-point size is valid.ISO 3245 pdf download.
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