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1、BRITISH STANDARD BS ISO 8419:2003 Belt drives Narrow V-belts Sections 9N/J, 15N/J and 25N/J (lengths in the effective system) ICS 21.220.10 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 8419:2003 This British Standard was publishe
2、d under the authority of the Standards Policy and Strategy Committee on 12 February 2003 BSI 12 February 2003 ISBN 0 580 41244 X National foreword This British Standard reproduces verbatim ISO 8419:2003 and implements it as the UK national standard. The UK participation in its preparation was entrus
3、ted to Technical Committee MCE/10, Belts and pulley drives, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this docume
4、nt may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. U
5、sers are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for chan
6、ge, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 7 and a back cover. The BSI cop
7、yright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 8419:2003(E) INTERNATIONAL STA
8、NDARD ISO 8419 Third edition 2003-02-01 Belt drives Narrow V-belts Sections 9N/J, 15N/J and 25N/J (lengths in the effective system) Transmissions par courroies Courroies trapzodales troites Sections 9N/J, 15N/J et 25N/J (longueurs dans le systme effectif) BS ISO 8419:2003 Licensed Copy: sheffieldun
9、sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:9148 O3002(E) DPlcsid Fremia ihTs PDF file mya ctnoian emdebt dedyfepcaes. In ccacnadrow eitA hebods licnesilop gnic,y tihs file mirp eb yatnde iv roweb detu slahl ton ide ebtlnu deess teh typfecaes wihce era hml era
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14、heffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii 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 carri
15、ed out through ISO 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, governmental and non-governmental, in liaison with ISO, also take part in the work. I
16、SO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare Internati
17、onal Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the el
18、ements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8419 was prepared by Technical Committee ISO/TC 41, Pulleys and belts (including veebelts), Subcommittee SC 1, Friction belt drives. This third edition ca
19、ncels and replaces the second edition (ISO 8419:1994), of which it constitutes a technical revision. BS ISO 8419:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2
20、006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS:9148 O3002(E) 1 Belt drives Narrow V-belts Sections 9N/J, 15N/J and 25N/J (lengths in the effective system) 1 Scope This International Standard specifies, for narrow V-belts of cross-sections 9N/J (for pulley grooves of effective width 8,9 mm
21、), 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
22、, and the designation and marking. NOTE 1 The cross-section of a narrow V-belt is defined by a number (9, 15 or 25) followed by the letter N or J to denote single or joined belts. NOTE 2 To define belts of raw-edge cogged construction, the letter “X” is added, i.e. NX or JX. 2 Normative references T
23、he following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1081, Belt drives V-belts and V-ribbed belts,
24、and corresponding grooved pulleys Vocabulary ISO 5290:2001, Belt drives Grooved pulleys for joined narrow V-belts Groove sections 9N/J, 15N/J and 25N/J (effective system) ISO 9608, V-belts Uniformity of belts Test method for determination of centre distance variation 3 Terms, definitions and symbols
25、 For the purposes of this document, the terms, definitions and symbols relating to drives using V-belts (i.e. belt and grooved pulleys) given in ISO 1081 and ISO 9608 apply 4 Effective length, Le 4.1 The standard effective lengths are the effective lengths under tension measured under the conditions
26、 specified in 7.1. BS ISO 8419:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 4.2 The nominal values of the standard effective lengths of V-belts, expressed in millimetres, have been selected from the R 40 series of preferred numbers
27、, in accordance with ISO 3. 4.3 Standard effective lengths are given in Table 1. 5 Tolerances on effective length 5.1 Manufacturing tolerances The permissible manufacturing tolerances for effective length of narrow V-belts are given in Table 2. 5.2 Belt-matching tolerances for narrow V-belts in same
28、 set Values for the tolerances on the lengths of narrow V-belts of the same set in multiple V-belt drives are given in Table 3. BS ISO 8419:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 Table 1 Standard effective lengths Dimensions
29、in millimetres Cross-sections 9N, 9NX, 9J, 9JX 15N, 15NX, 15J, 15JX 25N, 25NX, 25J, 25JX Le 630 1 270 2 540 670 1 345 2 690 710 1 420 2 840 760 1 525 3 000 800 1 600 3 180 850 1 700 3 350 900 1 800 3 550 950 1 900 3 810 1 015 2 030 4 060 1 080 2 160 4 320 1 145 2 290 4 570 1 205 2 410 4 830 1 270 2
30、540 5 080 1 345 2 690 5 380 1 420 2 840 5 690 1 525 3 000 6 000 1 600 3 180 6 350 1 700 3 350 6 730 1 800 3 550 7 100 1 900 3 810 7 620 2 030 4 060 8 000 2 160 4 320 8 500 2 290 4 570 9 000 2 410 4 830 9 500 2 540 5 080 10 160 2 690 5 380 10 800 2 840 5 690 11 430 3 000 6 000 12 060 3 180 6 350 12 7
31、00 3 350 6 730 3 550 7 100 7 620 8 000 8 500 9 000 BS ISO 8419:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 Table 2 Manufacturing tolerances for narrow V-belts Dimensions in millimetres Nominal effective length Le Permissible devia
32、tion for sections 9N, 9NX, 15N, 15NX, 25N, 25NX and 9J, 9JX, 15J, 15JX, 25J, 25JX Le u 800 8 800 Le u 1 000 10 1 000 Le u 1 270 13 1 270 Le u 1 600 16 1 600 Le u 2 030 20 2 030 Le u 2 540 25 2 540 Le u 3 180 32 3 180 Le u 4 060 40 4 060 Le u 5 080 50 5 080 Le u 6 350 63 6 350 Le u 8 000 80 8 000 Le
33、u 10 160 100 10 160 Le 125 Table 3 Belt-matching tolerances Dimensions in millimetres Nominal effective length Le Maximum permissible deviation between the lengths of belts of the same set for sections 9N, 9NX, 15N, 15NX, 25N, 25NX and 9J, 9JX, 15J, 15JX, 25J, 25JX Le u 800 3 800 Le u 1 270 4 1 270
34、Le u 2 030 6 2 030 Le u 3 550 8 3 550 Le u 6 000 10 6 000 Le u 10 160 14 10 160 Le 18 BS ISO 8419:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 6 Centre distance variations Permissible centre distance variations of any belt are give
35、n in Table 4. Table 4 Centre distance variation limits Dimensions in millimetres Cross-sections 9N, 9J, 9NX, 9JX 15N, 15J, 15NX, 15JX 25N, 25NX, 25J, 25JX Nominal effective length Le E Le u 1 015 1,2 1,8 1 015 Le u 2 030 1,6 2,2 2 030 Le u 5 080 2 3,4 5 080 Le 2,5 3,4 7 Measuring and checking 7.1 Ch
36、ecking the belt length For the measurement of the effective length, set the belt up on two identical pulleys with an effective circumference in accordance with that given in Table 5 and having functional dimensions, in accordance with ISO 5290. The pulleys shall be mounted on parallel horizontal axe
37、s on a testing bench. Apply the measuring force indicated in Table 5 to the sliding pulley. Rotate the pulleys in order that the belt effects one to three rotations and thus sits properly in the pulley grooves. Measure the distance between the axes of the pulleys. The effective length Le of any belt
38、 is given by the following formula: emaxmine LEEC=+ where E is the distance between the axes of the measuring pulleys, in millimetres; Ce is the effective circumference of the measuring pulley, in millimetres. Table 5 Measurement characteristics Belt section Effective circumference of the measuring
39、pulleys mm Measuring force (per belt) N 9N, 9J, 9NX, 9JX 300 445 15N, 15J, 15NX, 15JX 600 1 000 25N, 25J, 25NX, 25JX 1 000 2 225 7.2 Checking the centre distance variation Centre distance variations shall be checked in accordance with the test method described in ISO 9608. BS ISO 8419:2003 Licensed
40、Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 8 Designation The physical dimensions of narrow V-belts shall be designated by: the section (see Clause 1); the appropriate effective length (see Table 1). EXAMPLE A belt of section 9N (single belt) o
41、r 9J (joined belt) and effective length 1 600 mm is designated as follows: 9N 1600 or 9J 1 600 9 Marking All narrow V-belts manufactured in accordance with this International Standard shall be marked legibly and durably on the outer non-working face of the belt, with the appropriate designation. BS
42、ISO 8419:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 Bibliography 1 ISO 3, Preferred numbers Series of preferred numbers BS ISO 8419:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:31:35 GMT+00:00 2006, Uncontrolled
43、 Copy, (c) BSI BS ISO 8419:2003 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Char
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