(ISo nternational Standard 7647 Commercial vehicles and buses - Gearbox flanges Type S Vehicules utilitaires etautobus --- Bridesdeboftes devitesses--TypeS First edition1986-08-15 07647-1986 (E) UDC 629.114.4/.5:62-58 Ref. No. 1SO 7647-1986 (E) Descriptors : road vehicles, commercial road vehicles, buses (vehicles), gearboxes, flanges, dimensions, designation. Price based on 3 pages Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has mental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. They are approved in accordance with iSO procedures requiring at International Standard ISO 7647 was prepared by Technical Committee iSO/TC 22, Roadvehicles. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. International Organizationfor Standardization,1986 Printed in Switzerland ISO7647-1986 (E) INTERNATIONALSTANDARD Commercial vehicles and buses - Gearbox flanges Type S Scope andfield ofapplication 3 Dimensions and tolerances This International Standard specifiesthe nominal dimensions Nominal dimensions, tolerances and bolt hole fixing positions and tolerances which affect the interchangeability between which affect the interchangeability of type S flanges for gear- gearbox flanges and mating parts used on commercial vehicles boxes are shown in figures 1 to 3, and given in the table. and buses. The flanges covered by this International Standard are designated type S. They are not interchangeable with type A flanges deait with in ISo 7646. 4 Designation Gearbox flanges meeting the requirements of this International Dimensions not specified are left to the discretion of the com- Standard shall be identified by the following details in the order ponent manufacturer. specified: a) reference to this International Standard; 2 References b) the size code (see table); c) the number of fixing bolts; Iso 286, /SO system of limits and fits.1) the size of the fixing bolts. Iso1101,Technicaldrawings-Geometricaltolerancing Example: Tolerancing of form, orientation, location and run-out Generalities,definitions,symbols,indicationsondrawings. Designation of a gearbox flange type S with size code 1 500 and four 14 mm fixing bolts: ISO7646,Roadvehicles Gearbox flanges for commercial vehicles and buses -- Type A. Flange Iso 7647 - 1500×4×14 1) At present at the stage of draft. (Revision of ISO/R 286-1962.)