ISO/TC 41/SC 1 - Friction

This document specifies a test method for determining the centre distance variation of V-belt and V‑ribbed belt drives as a criterion for the uniformity of V-belts and V-ribbed belts. This document does not apply to elastic V-ribbed belts.

This document specifies the principal dimensional characteristics of V-ribbed pulley groove profiles, together with the corresponding endless V-ribbed belts, of PH, PJ, PK, PL and PM profiles which are used for general industrial applications except elastic belts. The PK belt was originally established for automotive accessory drive applications and ISO 9981 deals specifically with that particular field.

This document specifies a fatigue test for the quality control of V-belts (sections AV 10, AV 10X, AV 13, AV 13X, AV 17 and AV 17X) intended for driving the auxiliaries of internal combustion engines used for automotive purposes. NOTE The dimensional characteristics of these belts and of the corresponding pulleys are the subject of ISO 2790.

This document specifies the requirements for belts and pulleys for V-belt drives used for driving auxiliaries of internal combustion engines for the automotive industry.

This document specifies the principal dimensional characteristics of V-ribbed pulley groove profiles, together with the corresponding endless V-ribbed belts of PK profile which are used predominantly for automotive accessory drive applications. This document does not apply to the complete array of V-ribbed belts and pulleys of PH, PJ, PK, PL and PM profile for industrial and other non-automotive applications which are covered by ISO 9982. PK belt profile dimensions and tolerances are the same in both International Standards. 6.2 and 6.3 of this document do not apply to elastic belts.

This document specifies the limiting values for the adjustment of centres of two transmission pulleys. It is applicable to: — crowned pulleys for flat belts; — grooved pulleys for V-belts, either single, multiple or joined; — grooved pulleys for V-ribbed belts; — toothed pulleys for synchronous belts.

This document specifies the main dimensions of endless hexagonal belts intended for use on agricultural machinery (and, in particular, harvester-thresher machines), together with the groove section of the corresponding fixed-diameter pulleys.

ISO 24035:2014 provides dimensional details of the V-drive belts used on agricultural machinery. It is intended to reflect practice in the design of such drives and to provide, where practicable, links to International Standards for similar belts used on industrial machinery.

ISO 1813:2014 specifies the maximum electrical resistance of antistatic endless V-ribbed belts, joined V-belts, and single V-belts including wide section belts and hexagonal belts, as well as corresponding production control and individual proof methods of measurements. The application of ISO 1813:2014 is limited to new belts intended to be used in an explosive atmosphere or in situations where there is a fire risk. The test is intended to ensure that the belt is sufficiently conductive to dissipate charges of electricity which can form on it in service.

ISO 11749:2014 specifies a dynamic test method for the quality control of V-ribbed belts (PK profile) which are used predominantly for accessory drive applications in the automotive industry.

ISO 1081:2013 specifies the terms and definitions, in English and French, relating to V-belt drives, V-belts, hexagonal belts, joined V-belts and the corresponding V-grooved pulleys, V-ribbed belt drives, V-ribbed belts and V-ribbed pulleys, as well as the corresponding symbols.The general definitions are valid irrespective of the system describing the pulleys. The dimensions of pulley grooves can be defined either on the basis of the datum width or on the basis of the effective width. As a result, two systems for the definition and description of the dimensions of pulleys and belts have been developed. The two systems are independent of each other.

ISO 9980:2012 specifies the methods of checking the regularity of the grooves and pulleys for V-belts specified in the system based on effective width. The grooved pulleys can be designed for use with classical or narrow V-belts. The V-belts can be either single or joined units.

ISO 5291:2011 specifies the principal characteristics of grooved pulleys (for groove sections AJ, BJ, CJ and DJ), intended to take joined classical V-belts for industrial power transmission drives.

This International Standard specifies the characteristics of quality which are common to all transmission pulleys. It establishes specific quality levels for the finish and balance of transmission pulleys and test pulleys. This International Standard is applicable to transmission pulleys for V-belts, V-ribbed belts, flat or synchronous belts; it does not apply to those pulleys for variable speed drives that have one or more moving flanges. The other characteristics of transmission pulleys can be found in the relevant International Standards.

ISO 8419:2003 specifies, for narrow V-belts of cross-sections 9N/J (for pulley grooves of effective width 8,9 mm), 15N/J (for pulley grooves of effective width 15,2 mm) and 25N/J (for pulley grooves of effective width 25,4 mm), the standard effective lengths, the tolerances on effective lengths, the centre distance variations, the conditions for measuring the effective length and the centre distance variation, and the designation and marking.

This International Standard specifies the principal characteristics of grooved pulleys (for groove sections 9N/J, 15N/J and 25N/J) intended to take both single and joined narrow V-belts for industrial power transmission drives. Some background information on the series of effective diameters is given in annex A. NOTE The effective width of a groove is regarded as the basic dimension of standardization in the effective system for grooves and for the corresponding narrow V-belts considered as a whole.

Cancels and replaces the second edition (1989). Specifies the principal dimensions of grooved pulleys for classical V-belts and narrow V-belts specified in the terminology system based on datum width. It is important that narrow belts are not used with pulleys uniquely designed for classical belts, and, on the other hand, that multiple belt drives are not used with joined V-belts.

The method specified applies to a single V-belt in a single pulley groove or to a joined V-belt in a multiple pulley. The location of the pitch zone is expressed as an effective line differential or a datum line differential, respectively. A hexagonal belt can be treated as a single V-belt.

The principle of the method specified is calculation of the pitch diameter of the belt operating in the pulley on a test fixture by measuring the rotational frequency of the pulley and either the belt velocity over a straight span or the centre distance between the pulleys and the time of rotation of the belt, and calculation of the effective line differential.

Specifies for V-belts of sections Y, Z, A, B, C, D, E, SPZ, SPA, SPB, and SPC: the recommended datum lengths, the tolerances for datum lengths, the conditions for measuring the datum length.

Specifies the principal dimensions. Annexes A (recommended crowns of the pulleys) and B (recommended correspondence between the widths of belts and the widths of the pulleys used) are for information only.

Specifies the methods of checking the regularity of the grooves and pulleys for V-belts. The grooved pulleys may be designed for use with classical or narrow V-belts. The groove details shall be specified by the dimensions shown in the figures 1 to 10.

This second edition cancels and replaces the first edition (1976). Specifies the principal dimensions of V-belts and the groove profiles of corresponding fixed or variable diameter pulleys. Is not applicable to belts used either as part of farm-machines which are standardized in ISO 3410, or for the propulsion of self-propelled vehicles.

This second edition cancels and replaces the first edition (1976). Specifies the main dimensions of V-belts intended for use on agricultural machinery (in particular harvester-thresher machines), together with the grove section of the corresponding fixed- or variable-diameter pulleys. Tabulates nominal values of datum length from 630 mm up to and including 5 000 mm. Some figures illustrate shapes and reference quantities of concern.

ISO 2790:2004 specifies the requirements for belts and pulleys for V-belt drive used for driving auxiliaries of the internal combustion engines for the automotive industry.

ISO 5287:2003 specifies a fatigue test for the quality control of narrow V-belts (sections AV 10 and AV 13) intended for driving the auxiliaries of internal combustion engines used for automotive purposes.

Specifies the principal dimensional characteristics of V-ribbed pulley groove profiles, together with the corresponding endless V-ribbed belts of PK profile which are used predominantly for automotive accessory drive applications.

Defines terms relating to V-belt drives, V-belts and V-grooved pulleys, V-ribbed belt drives, V-ribbed belts and V-ribbed pulleys, as well as the corresponding symbols. Replaces the first edition, which has been technically revised.

Refers to a dynamic test method for the quality control of V-ribbed belts which are used predominantly in the automotive industry. The dimensional characteristics of the belts and of corresponding pulleys are the subject of ISO 9981.

Cancels and replaces the first edition (1980). Specifies generally acceptable formulae for power ratings, together with appropriate correction terms and factors used in the design of industrial V-belt and V-ribbed belt drives with two pulleys.

Cancels and replaces the first edition (1988). Specifies a test method for determining the centre distance variation of V-belt drives as a criterion for the uniformity of V-belts.

Specifies for V-belts of cross-sections: 9J (effective width 8,9 mm), 15J (effective width 15,2 mm), 20J (effective width 20,9 mm), 25J (effective width 25,4 mm), the recommended effective lengths and their tolerances, and the conditions for measuring the effective length.

Specifies the principal characteristics (groove angle, profile dimensions, effective diameter) and geometrical inspection of grooves; quality, surface finish and balancing of pulleys are dealt with in ISO 254.

This third edition cancels and replaces the second edition (1985). Specifies the principal characteristics of grooved pulleys intended for V-belts for industrial power transmission drives. Tabulates the nominal effective diameters from 67 mm up to and including 2500 mm. An annex gives some background informations.

Specifies the main dimensions and corresponding tolerances and gives a method to measure the lengths of belts.

This third edition cancels and replaces the second edition (1982). Specifies the requirements for belts and pulleys used for driving auxiliaries of internal combustion engines. Tabulates dimensions for various quantities (five tables). Some figures illustrate shapes and reference quantities of concern.