Please Contact at Telefax ट ल फ क स: 011 2323 6311 E-mail: ted@bis.org. in व य पकप पकच ल म मस द प र ख प र षण स ल Ref Date ट ईड 02/ ट - 63 12 12 2018 स वचल म लपर व हक, स च ण प रण ल तथ अ तर ह इ जन ववषय सममतत, ट ईड 2 प) पकच वह इ ज न यच ग ववभ ग पकच षद पक इववपक प सभ सदस य प ख) स वल म पकच व हप, स ल ण प रण तथ अ तद ह इ ज ववषय सममनत, ट ईड 2, प सभ सदस य प ग) अन य सभ च ल ख व न प य मह दय/ मह दय, न म म खत प र ख स ह: प र ख स ख य ववषय TED 02 (12062) W म पक ड प म य क र प एव ल पकहहय प ववम ष टट ( आई एस 10323 प प रथम पक क षण ) प प य रपक त म प मस द प अव प प अपक सम मनतय यह तत त ह ए भ ज प यहद अ तत यह म प ट र य म प प चपक म स व प त ह ज ए त इस पक अम प म आपक प व यवस य अथव प त म य पह इय आ सपत ह सम मनत प अष न तम नत थ : 14 02 2019 सम मनत यहद प ई ह त ल हदए गए प र चपक म म ख प रपक च म खत पक त पक अध हस त क ष प भ ज यहद प ई सम मनत प र प त ह ह त ह: अथव सम मनत म प व भ ष स तध त र हट ह ई त रपक त प र ख प यथ वत अ नतम चपक हदय ज य ग यहद प ई सम मनत तप प प रप नत प ह ई त ववषय
सममनत प अघ यक ष प पक म स अथव र प इ पक आग प प य व ह प म ए ववषय सममनत प भ ज ज प त द प र ख प अ नतम चपक द हदय ज एग यह प र ख भ त य म प ब य प व तस इट www@bis.org.in पक भ रपक ब ध ह धन यव द भवद य ( आ आ मस ह ) स रपक च म खत व ज ञ न प ई एव प रम ख पक च वह इ ष ज यच ग ववभ ग
Please Contact at Telefax ट ल फ क स: 011 2323 6311 E-mail: ted@bis.org. in DRAFT IN WIDE CIRCULATION DOCUMENT DESPATCH ADVICE Ref Date TED 2/ T- 63 12 12 2018 Automotive Prime movers, Transmission Systems and Internal Combustion Engine Sectional Committee, TED 2 1) All Members of Transport Engineering Division Council, TEDC 2) Automotive Prime Movers, Transmission Systems and Internal Combustion Engine Sectional Committee, TED 2 3) All Others Interested. Dear Sir/ Madam, Please find enclosed the following draft standard: Document No. TED 2 (12062) W Title Specification for crank and chain wheel for mopeds (First Revision of IS 10323) Kindly examine this draft standard and forward your views stating any difficulty which you are likely to experience in your business or profession, if this is finally adopted as National Standard. Last date for comments : 14 02 2019 Comments, if any, may please be made in the format given below and mailed to the undersigned at the above address. In case no comments are received or comments received are of editorial nature, you will kindly permit us to presume your approval for the above document as finalized. However, in case of comments of technical in nature are received then it may be finalized either in consultation with the Chairman, Sectional Committee or referred to the sectional committee for further necessary action if so desired by the Chairman, Sectional Committee. The document is also hosted on BIS website www.bis.org.in Thanking you, Encl: As above Yours faithfully, (R R Singh) Scientist E & Head Transport Engineering Department
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Doc: TED 2 (12062) W For Comments only Draft Indian Standard SPECIFICATION -FOR CRANKS AND CHAIN WHEELS FOR MOPEDS (First Revision of IS 10323) ICS 43.120 Not to be reproduced without permission Last date for receipt of BIS or used as standard of comments is 14 02 2019 Automotive Prime Movers, Transmission System and Internal Combustion Engines Sectional Committee, TED 2 NATIONAL FOREWORD This draft Indian Standard (First Revision) shall be adopted by the Bureau of Indian Standards on the recommendation of the Automotive Prime Movers, Transmission System and Internal Combustion Engines Sectional Committee and approval of the Transport Engineering Division Council. This Standard was first published in 1982. This first revision of the standard is being undertaken to update the standard and to incorporate latest technological advancement/ development that has taken place in various fields. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 Rules for rounding off numerical values (revised). The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
Draft Indian Standard SPECIFICATION -FOR CRANKS AND CHAIN WHEELS FOR MOPEDS (First Revision of IS 10323) 1. Scope - Covers requirements for cranks and chain wheels intended for starting and pedaling purposes of mopeds. The fitment is to the centre axle of the mopeds. 2. References The following standards contain provisions which through in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. IS No. IS 513 (Part 1):2016 IS 513 (Part 2):2016 IS 1068:1968 IS 2062:2011 Title Cold reduced low carbon steel sheets and strips Part 1: Cold forming and Drawing purposes (Sixth Revision) Cold reduced low carbon steel sheets and strips Part 2: High tensile and multi-phase steel (Sixth Revision) Specification for electroplated coatings of nickel and chromium on iron and steel (Third Revision) Hot Rolled Medium and High Tensile Structural Steel (Seventh Revision) IS 2403:2014 Short-Pitch Transmission Precision Roller and Bush / ISO 606:2004 Chains attachments and Associated Chain Sprockets (Third Revision) IS 2500 (Part 1):2000 Sampling Inspection Procedures - Part 1 : Attribute / ISO 2859-1:1999 Sampling Plans Indexed by Acceptable Quality Limit (AQL) for Lot-by-Lot Inspection (Third Revision) IS 3469 (Part 1 to 3):1974 IS 5517:1993 IS 7283:1992 IS 7743:2006 Tolerances For Closed Die Steel Forgings (First Revision) Steels for Hardening and Tempering (Second Revision) Hot rolled bars for production of bright bars and machined parts for engineering applications (Third Revision) Recommended practice for magnetic particle testing and inspection of steel forgings (First Revision) IS 11740:2014 Motorcycle Chains - Characteristics and Test Methods / ISO 10190:2008 (First Revision)
3. Shape and Dimensions -The recommended shape and dimensions are given in Fig. 1 to 3. The right pedal crank assembly is shown in Fig. 4. Where agreed to, the parameters given below may be as agreed to between purchaser and suppliers. a) Bent height of cranks, b) Radii of bends, c) Centre distance of the central axle hole and pedal axis, d) Pitch circle diameter of chain wheel, e) Number of teeth on chain wheel, and f) Design of serrations in right pedal crank corresponding to central hole of the chain wheel. 4. Materials -The cranks shall be made from steel conforming to the IS 5517 or IS 7283. The minimum ultimate tensile strength of steel for cranks shall be 550 N/ mm 2 (55 kgf/ mm 2 ).
4.1 The chain wheel shall be made of steel conforming to IS 2062 or IS 513 (Part 1) or IS 513 (Part 2) In addition to minimum properties specified, the steel used for cranks and chain wheels shall be suitable for fabrication purposes. 5. General Requirements -The cranks shall have no forging defects, such as cracks, pits, scales, burrs, etc. The holes shall be smooth and square to the centre line of the crank and parallel. All sharp edges are to be rounded off by grinding. 5.1 All forging dimensions shall be in accordance with tolerances specified in IS 3469 (Part 1 to 3). 5.2 The chain wheels shall be true and in one plane concentric with the hole on the cranks for centre axis. The teeth shall be free from burrs, cracks or any other defects. The teeth profile shall be such as to suit chains conforming to IS 2403 or IS 11740. 6. Finish - Cranks and chain wheels shall be nickel and chromium plated. The plating shall conform to service Grade No. 3 severe of IS: 1068. The plating shall be uniform and free from all defects. 7. Tests
7.1 All forging defects shall be checked -by non-destructive test methods as given in IS 7743. 7.2 The crank and chain wheel assembly shall be tested as follows: The assembly shall be rigidly fixed in a vertical plane having the crank horizontal. Through suitable means weight shall be applied on the hole for pedal spindle. The assembly shall sustain a weight of 2 224 N (227 kgf) without breaking at the joint, loosening or showing any sign of yielding. 7.3 The electroplating requirements shall be tested in accordance with IS 1068. 8. Packing - The cranks and chain wheels shall be packed in accordance with the best prevalent trade practice. 9. Marking Shall be marked with manufacturers name or trade-mark, model number, made in India, if required. Any other marking as per best prevalent trade practice may also be followed. 9.1 BIS Certification Marking The crank and chain wheel may also be marked with the Standard Mark. 9.1.1 The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act 2016 and the Rules and regulations made thereunder. The details of conditions under which the licence for the use of Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards. 10. Sampling 10.1 Unless otherwise agreed to between the supplier and the purchaser, the procedure as given in IS 2500 ( Part 1 ) shall be followed for sampling inspection. The inspection level and sampling plan for various characteristics as given in 10.1.1 to 10.1.3 shall be followed. 10.1.1 For the characteristics, dimensions, workmanship and finish the scale of sampling shall be corresponding to special inspection level S-4 given in Table 1 of IS 2500 ( Part 1). 10.1.2 For the characteristics given in 10.1.1, the sampling plan shall be corresponding to Acceptable Quality Level (AQL) value of 1.5 percent given in Table 2-A of IS 2500 (Part I). 10.1.3 For tests the sampling plan to be followed shall be corresponding to Acceptable Quality Level (AQL) of 1.0 percent given in Table 2-A of IS 2500 (Part 1).