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 ISOÂ 9981 deals specifically with that particular field.

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This document specifies the characteristics of synchronous endless belts and their related pulleys for use in automotive applications such as engine camshaft drives. The characteristics include: — belt pitch spacing; — belt nominal tooth dimensions; — belt width and width tolerance; — belt pitch length and pitch length tolerance; — pulley groove dimensions and tolerances; — pulley tolerances and quality specifications. Test methods for measuring belt pitch length and lateral runout are also included.

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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.

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ISO 5288:2017 specifies the terms and definitions related to the use of synchronous belt drives for mechanical power transmission and where positive indexing or synchronization is required.

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ISO 17396:2017 specifies the principal characteristics of synchronous endless and open belts and pulleys of the profile systems T and AT for use in synchronous belt drives for mechanical power transmission and where positive indexing or synchronization can be required. NOTE Synchronous belt drives have been known by various titles in the past: for example, timing belt drives, positive belt drives, gear belt drives. The principal belt and pulley characteristics include a) nominal belt tooth dimensions, b) belt tooth pitch spacing, c) belt length and width dimensions, d) belt length measurement specifications, e) pulley groove dimensions and tolerances, f) pulley diameter and width dimensions and tolerances, and g) pulley quality specification. The belts of the profile systems T and AT are made of polyurethane with high-tension fine steel cord tension members in most cases. As far as certain forces are given in this document, these values are only valid for these kinds of belt. For polyurethane belts with different tensile cords, i.e. aramid or rubber belts reinforced with glass fibre, the values can be different. It is intended that the user and the manufacturer agree about suitable values. Open belts made of thermoplastic polyurethane can be spliced to work as endless belts in conveyor applications. In this case, the tolerances are not valid for the splicing area of the endless spliced belt.

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ISO 5295:2017 establishes formulae for the calculation of power rating and centre distance of standard synchronous belts on two pulley drives. It is applicable to trapezoidal belts only. It does not apply to curvilinear synchronous belts. The numerical values of certain parameters used in the calculations depend upon the pitch and the construction of the belt and are specified by the belt manufacturer.

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ISO 19347:2015 specifies the principal characteristics of synchronous endless belts and pulleys for use in synchronous endless belt drives[1] for mechanical power transmission and where positive indexing or synchronization is required. The principal characteristics includes the following: a) belt nominal tooth dimensions; b) belt length and width dimensions and tolerances; c) belt length-measurement specifications; d) pulley grooves dimensions and tolerances; e) pulley dimensions and tolerances; f) pulley quality specification. [1] These drives have been known under various names in the past, for example: timing belt drives, positive belt drives, gear belt drives.

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ISO 9563:2015 specifies the maximum and minimum electrical resistance of antistatic endless and open ended synchronous belts. This International Standard provides guidelines to allow testing of synchronous belts to prove their static conductive (dissipative) properties as well as a corresponding production control test method. The application of this International Standard 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 may form on it in service. In the case of a production control test, the decision is left to national standards or agreement between interested parties as to whether the test shall be carried out on each belt in a batch or on only a percentage of belts in a batch. For each proof test, the belt manufacturer shall determine which type of electrode and conductive coating material shall be used.

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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.

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This International Standard 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.
The dimensional characteristics of the belts and of corresponding pulleys are the subject of ISO 9981.

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This International Standard 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 this International Standard 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.
In case of a production control test, the decision is left to national standards or agreement between
interested parties as to whether the test shall be carried out on each belt in a batch or on only a percentage
of belts in a batch.
NOTE For each proof test, it is intended that the belt manufacturer determine which type of electrode and
conductive coating material can be used.

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ISO 13050:2014 specifies the principal characteristics of metric pitch curvilinear synchronous endless belts and pulleys in G, H, R, and S profile systems for use in synchronous belt drives (also known in the past as timing belt drives, positive belt drives, gear belt drives) for mechanical power transmission and where positive indexing or synchronization might be required. The principal belt and pulley characteristics include the following: nominal belt tooth dimensions; belt tooth pitch spacing; belt length and width dimensions and tolerances; belt length measurement specifications; pulley groove dimensions and tolerances; pulley diameter and width dimensions and tolerances; pulley quality specification.

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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.

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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.

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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.

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This International Standard 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. It is intended to specify the inspection parameters and tolerances of grooved pulleys in future International Standards.

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This International Standard specifies the principal characteristics of synchronous pulleys for use in synchronous endless belt drives for mechanical power transmission and where positive indexing or synchronization is required. The principal characteristics include: a) tooth dimensions and tolerances; b) pulley dimensions and tolerances; c) quality specification. As far as dimensions are concerned, the pulleys specified in this International Standard are used interchangeably with the belts specified in ISO 5296.

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This International Standard specifies the principal characteristics of synchronous endless belts for use in synchronous belt drives for mechanical power transmission and where positive indexing or synchronization is required.

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This International Standard specifies test methods for determining the physical properties of synchronous belts used in driving engine parts, such as camshafts, fuel injection pumps, balancing shafts. These test methods are intended to provide a means of characterizing synchronous belt properties for belts which are evaluated and qualified by dynamic laboratory and field testing.

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This International Standard 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.

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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.

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This International Standard 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.

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Specifies the principal characteristics of grooved pulleys, 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.

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

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This International Standard 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.

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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.

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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.

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This International Standard specifies test methods for determining the physical properties of synchronous belts used in driving engine parts, such as camshafts, fuel injection pumps, balancing shafts. These test methods are intended to provide a means of characterizing synchronous belt properties for belts which are evaluated and qualified by dynamic laboratory and field testing. NOTE The dimensional characteristics of these belts are the subject of ISO 9010.

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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.

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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.

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IEC 60512-15-3:2008 details a standard test method to assess the effectiveness of the insert retaining system to withstand torsional stresses likely to be encountered during normal use.

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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.

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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.

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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.

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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.

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This second edition cancels and replaces the first edition (1981). Establishes formulae for the calculation of power synchronous belts on two pulley drives. The numerical values of certain parameters used in the calculation depend upon the pitch and the construction of the belt and shall be specified by the belt manufacturer.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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