1、Road vehicles Diametral pitch starter motor pinions (IS0 81 23 : 1991) ICs 43.060.1 O Descriptors: Road vehicles, internal combustion engines, starters, pinions. Straenfahrzeuge - Diametral Pitch-Starterritzel (IS0 81 23 : 1991) DIN IS0 8123 - This standard incorporates International Standard IS0 81
2、 23 Road vehicles - Diametral pitch starter motor pinions. A comma is used as the decimal marker. National foreword This standard has been prepared by ISO/TC 22. The responsible German body involved in its preparation was the Normenausschu Kraftfahrzeuge (Road Vehicle Engineering Standards Committee
3、). IS0 Standard comprises 3 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN IS0 8123 : 1997-0 - . - Y Deutsches Institut fur Normung e VI Berlin wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen) English p
4、rice group 06 Sales No Page 1 IS0 81 23 : 1991 Road vehicles Diametral pitch starter motor pinions Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally c
5、arried oiit through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the
6、work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draf International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requ
7、ires approval by at least 75% of the member bodies casting a vote. International Standard IS0 8123 was prepared by Technical Committee ISO/TC 22, Road vehicles. 1 Scope 2 Dlmensions Detailed tooth limit dimensions and the base tangent This international Standard specifies the diametral length as the
8、 inspection value, w, are given in pitches, pressure angles, number of teeth and other table 1 for diametral pitch starter motor pinions. tooth characteristics which are necessary to ensure interchangeability of starter motor pinions used for NOTE 1 The symbols, which are in accordance with starter
9、motors mounted on reciprocating internal IC0 701:1976, International gear notation - Symbols for combustion engines for road vehicles. geometrical data, are illustrated in figure 1. Page 2 IS0 8123 : 1991 Table 1 Dimensions in millimetres 3in N aa 3in bb 9 - 0- no ;- ?o ?7* - N ni ?O u- NCU ru- Cu- 3m =. h 3m ?Cu 307 x! nin NN Ob - Et Page 3 IS0 81 23 : 1991 Figure 1
