ISo 1537 NTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ·MEKIYHAPOIHA OPTAHM3ALIMI IIO CTAHIAPTW3ALIW·ORGANISATION INTERNATIONALE DE NORMALISATION Continuous mechanical handling equipment for loose bulk materials -- Troughed belt conveyors (other than portable conveyors) - Idlers Engins de manutention continue pour produits en vrac -- Transporteurs a courroie en auge (autres que mobiles) -- Rouleaux de soutien First edition -- 1975-10-15 ISO 1537-1975 (E) Ref. No. 1SO 1537-1975 (E) UDC 621.867.2 Descriptors : handling equipment, continuous handling, bulk products, conveyors, belt conveyors, idlers, dimensions. Price based on 5 pages FOREWORD IsO (the International Organization for Standardization) is a worldwide federation of national standards institutes (ISO Member Bodies). The work of developing International Standards is carried out through ISO Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be represented on that Committee. International organizations, governmental 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 StandardsbytheISOCouncil. Prior to 1972, the results of the work of the Technical Committees were published as IsO Recommendations; these documents are now in the process of being transformed into International Standards. As part of this process, Technical Committee ISO/TC 101 has reviewed ISO Recommendation R 1537 and found it technically suitable for transformation. International Standard iSO 1537 therefore replaces IS0 Recommendation R 1537-1970 to which it is technically identical. ISO Recommendation R 1537 was approved by the Member Bodies of the following countries : Belgium Greece Spain Canada India Sweden Colombia Israel Switzerland Italy Czechoslovakia Thailand Netherlands Egypt, Arab Rep. of Turkey Finland New Zealand United Kingdom France Norway U.S.A. Germany South Africa, Rep. of U.S.S.R. The Member Body of the following country yexpressed disapproval of the Recommendation on technical grounds : Japan the transformation of ISO/R 1537 into an No Member Body disapproved International Standard. @ International Organization for Standardization, 1975 · Printed in Switzerland INTERNATIONAL STANDARD ISO 1537-1975 (E) Continuous mechanical handling equipment for loose bulk materials -- Troughed belt conveyors (other than portable conveyors) Idlers 1 SCOPE AND FIELD OF APPLICATION 4.1.2 Other materials This International Standard specifies the dimensions of The subject of idlers made of other materials will be idlers and their arrangement and clearances for troughed considered at a later date. belt conveyors (other than portable conveyors) with three carrying idlers. 4.2 Dimensions 4.2.1 External diameters, d1, of carrying idlers and return 2 REFERENCE idlers IsO 64, Steel tubes - Outside diameters. 3CLASSIFICATION ldlers for beits include FIGURE 1 -- Idler a) carrying idlers in line, of equal length, supporting the carrying belt; b) return idlers of two types, supporting the return belt, namely : TABLE 1 -- External diameters, d1, of carrying idlers and return idlers 1) with one single return idler; mm in 2) with one set of two return idlers of equal length, the axes of which are equally inclined to the 63,5 2 1/2 horizontal to form a V. The angle of inclination 76,1 is 10°. 88,9 31/2 The latter arrangement is applicable to conveyors 101,6 4 with belts at teast 800 mm wide. 108 41/4 127 5 4 SPECIFICATIONS 133 5 1/4 152,4 6 4.1 Materials 159 61/4 4.1.1 Steel 168,3 6 5/8 Where the idlers, carrying and return, are constructed from 193,7 7 5/8 steel tubes, their diameters shall be extracted from IsO 64 219,1 8 5/8 (see table 1).