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इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 624 (2003): Bicycles - Rims [TED 16: Bicycles] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 624:2003 W’mwi’% wr$f%R-f@T-fmTf@w ( akwytm) Indian Standard BICYCLES — RIMS — SPECIFICATION ( Fourth Revision) ICS 43.150 0 BIS 2003 BUREAU OF IN DIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC NEW DELHI 110002 October 2003 Price Group 8 Bicycles Sectional Committee, TED 16 FOREWORD This Indian Standard (Fourth Revision) was adopted by the Bureau ofIndian Standards, after the draft finalized by the Bicycles Sectional Committee had been approved by the Transport Engineering Division Council. This standard is one of a series of standards on bicycles and.their components. This standard was first published in 1955 and subsequently revised in 1961 and 1991. In this revision : a) Aluminium alloy rims have been added; and b) Types and sizes of rims which are in prevalent use in the country have been added. While preparing this standard, considerable assistance has been drawn from the following: a) ISO 5775-2 ‘Bicycle tyres and rims Part 2 : Rims’ issued by the International Organization for Standardization, and b) JIS D 9421:1997 ‘Rims for bicycles’ published by Japanese Industrial Association. The composition of the Committee responsible for the formulation of this standard is given in Annex B. For the purpose of deciding whether aparticular 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. IS 624:2003 Indian Standard BICYCLES — RIMS — SPECIFICATION ( Fourth Revision) 1 SCOPE 3.2 The dimensions of rims shall be as specified in Table 1to Table 6. Thi., andard specifies the dimensions and other requirements of bicycle rims made out of steel and 3.2.1 Measurement of Circumference alloy suitable for tyres of the same sizes, conforming The circumference of the rim is measured along the toIS2414: 1991 ‘Cycle and rickshaw pneumatic tyres bead seat by a steel measuring tape conforming to — Specification (third revision)’. This standard dimensions given in Table 10 (see also A-4). covers the following four profiles of the rims: 3.2.2 The tolerance on steel strip thickness, used for a) Beaded edge (BE) — (Earlier known as making rims shall be as specified in IS 513. Westwood), 4 MATERIAL b) Straight side (SS) — (Earlier known as Endric), 4.1 Rims shall be manufactured from cold-rolled c) Hooked bead (HE), and carbon steel strips having the following physical d) Crotchet (C). properties when tested in accordance with IS 1608: 2 REFERENCES Ultimate tensile strength, Min 310 Mpa’) Yield strength, A4in 185 Mpa’) The following standards contain provisions, which Elongation, Min 25percent on 50 mm through reference in this text, constitute provisions of 4.1.1 The steel strip shall be capable of being the standards. At the time of publication, the editions flattened on itself without any signs of fracture (see indicated were valid. All standards are subject to Is 1599). revision and parties to agreements based on this standard are encouraged to investigate the possibility 4.2 Aluminium rim shall be manufactured from of applying the most recent editions of the standards extruded aluminium alloy having the following indicated below: physical properties. 1s/1s0NO. Title Tensile strength, Min 215 N/mm* 513:1994 Cold-rolled low carbon steel sheets Yield strength, Min 160 N/mm* and strips (fourth revision) Elongation, Min 10percent 1068:1993 Electroplated coatings of nickel plus Hardness, Min 70 BHN chromium and copper plus nickel Specific gravity, Min 2.7 plus chromium on iron and steel rrI.,nejo.m..m.g pm. sn,,,ail n,,,ave naraness or..e,,l>uz,.,mmIu D.H..L.A. (third revision) 1599: 1985 Method for bend test (second 5 DESIGNATION revision) The rim shall bedesignated bythe type, nominal width 1608:1995 Mechanical testing of metals, tensile code, nominal rim diameter code and material name. testing (second revision) Example — A rim of Type BE with nominal rim 2500 (Part 1): Sampling inspection procedures: Part diameter 635 mm and width code 25 mm and the 2000 /1S0 1 Attribute sampling plans indexed material made out of steel shall be designated as 2859-1:1999 by acceptance quality level (AQL) BE-635-25-Steel. for lot-by lot- inspection (third revision) Rim made out of aluminium alloy shall be designated asBE-635 -25-AIAlloy. 3 SHAPE AND DIMENSIONS 6 MANUFACTURE 3.1 The typical profiles of various types of rims are 6.1 The holes for spokes and valves shall be illustrated in Fig. 1to Fig. 4. These are for guidance accurately punched or drilled in accordance with the only and are mainly intended for the design of the dimensions given in Fig. 5and Table 7to Table 9and corresponding rolling dies and not intended to be measured on the rim. ‘)1Mpa=0.102kgf/mm2. 1 IS 624:2003 variation inpitch ofspoke hole should bewithin 2mm. Characteristic Inspection Level AQL The valve hole shall be pierced centrally on the nose Dimensions, finish S3 2.5 of rim and shall be atthe centre of the two spoke holes. and manufacture The holes shall be clear, circular and free from burrs. 6.2 The rims made of steel may be provided with Compression test S1 1.0 drain holes of 2.5 mm diameter on either side of the 9 COMPRESSION TEST bead seat. The holes shall be located diametrically 9.1 Testing Machine opposite toeach other that isat least two holes on each bead and in all, not less than four holes to arim. The test shall be conducted on any suitable device, which is capable of loading the rim in the manner 6.2.1 The joint line on the tyre side and edge of spoke hole, valve hole shall be free from visible burrs. schematically indicated in Fig. 7. 6.2.2 The position of valve hole relating to spoke 9.2 Procedure holes shall be as shown in Fig. 5 when viewed from The rim shall be held between the two supports the tyre side. keeping the joint at right angle tothe line of loading. 6.2.3 The valve or spoke hole should not be punched The load shall be gradually increased to a load of on the weld joining line or on the pin joining line of 50 kg and kept for 2 min. The load shall then be the rim in the case of the aluminium alloy rim. released and the rim shall beexamined. The permanent 6.2.4 For aluminium alloy rim thejoints shall bemade deformation atthepoint of application of load shall be with the help of the pin which has the double shearing 1mm or less. load of 1000 kgf. 10 MARKING 6.2.5 The closing force for the joining pin with the 10.1 The rims shall bear the rim designation, source rim shall be 1000 kgf (minimum). of manufacture and/or trade-mark. Marking the 6.3 The rims shall be manufactured circular in shape. country of origin on the rims is optional. The difference between any two mutually 10.2 The rims may also be marked with the Standard perpendicular inside diameters shall not exceed 6mm. Mark. 6.4 The flatness of both the faces of the rim shall be 10.2.1 The use of the Standard Mark is governed by within 2 mm when measured by a feeler gauge on a the provisions of the Bureau of Indian Standards Act, flat surface. 1986 and the Rules and Regulations made thereunder. 7 FINISH The details of conditions under which the Iicence for The rims shall be nickel plus chrome plated and the the use of the Standard Mark may be granted to the electroplated coatings shall conform to service manufacturers or producers maybe obtained from the condition No. 1with classificati on code FdNi 10b Cr r Bureau of Indian Standards. of IS 1068 with provision tha t s nickel may be 11 PACKING substituted for b nickel, and mc or mp chromium may Rims shall be packed in such a way that they are not be substituted for r-chromium. The plating on the damaged during transit. significant surfaces (see Fig. 6) shall not be less than the minimum specified for the service condition of 12 SYMBOLS AND DIMENSIONS IS 1068. The aluminium alloy shall be nickel plus The following symbols are used in this standard: chrome plated and the electroplated coatings shall conform to service condition No. 1with classification A— Specified rim width, code A1/Ni 10b Cr r with the provision that p, d or s Al — Rim width at the tyre bead seat, nickel; may be substituted for b nickel and mc or mp D— Specified rim diameter, chromium may be substituted for r-chromium. Dt — Measuring rim diameter, D2 — Outer diameter, Anodizing thickness for Al-alloy rim shall be 5-10 G— Flange height, microns. Hl — Unobstructed minimum depth above rim NOTE — The significant surface implies the extended surface base with rim tape fitted to permit tyre ofthe rim after fixing the tyre. fitment, 8 SAMPLING Ll — Well width above rim tape, 8.1 Unless otherwise agreed to between the P— Bead seat width, manufacturer and the purchaser the procedure given in R2 — Flange radius, IS 2500 (Part 1)/1S0 2859-1 shall be followed. The R3 — Bead seat radius, single sampling plan to be followed for each R4 — Well top radius, characteristic shall be corresponding to the inspection w— Measuring tape width, and level and AQL as given below: B— Bead seat angle. 9 L IS 624:2003 37.5* 0.5 ~s i ! Alldimensionsinmillimetres. FIG. 1 BEADEDEDGECROSS-SECTIONDETAILS Table 1 Dimensions for Beaded Edge Rims (Clause 3.2 and Fig. 1) Alldimensions in millimetres. Type Nominal “Nominal lUm Width at Speeified Measuring Chnnferenee Number ofSpoke Diameter Width Code Tyre Bead Rim Diameter Rim Diameter atBeadSeat Holes (Informative Code Seat Al D D1 D1i 1.5 Reference) (1) (2) (3) (4) (5) (6) (7) (8) 305 25 25.5 304.7 304.35 956 20 349 25 25.5 349.2 348.85 1096 400 25 25.5 400.1 399.85 1256 -20(or)28 BE 408 25 25.5 408.75 408.40 1293 534 25 25.5 533.5 533.15 1676 540 25 25.5 539.6 539.25 1695 32(or) 559 25 25.5 558.6 558.45 1755 36 (or)40 584 25 25.5 583.9 583.55 1834 635 25 25.5 634.7 634.35 1994 3 IS 624:2003 r .- ,, \ I l– -i I --- /’ \ ‘, 6“ c! *’Y ‘1? 1REF Lt FIG. 2 STRAIGHT SIDE 121Ms Table 2 Dimensions of Straight Side Rims (Clause 3.2 and Fig. 2) All dimensions inmillimetres. Type Nominal A AI G P H, 1)2) L, 4 RZ R3 R4 ~ 3) R]m +0 W]dth tl -1 * 0.5 Min Min Min Min Mar Min +5” Code (1) (2) (3) (4) (5) (6) (7) (8) (9) (lo) (11) (12) 18 18 18 6.6 1.8 1.8 10 1.5 1 1.5 I@ 20 20 — 6.5 2 2 11 1.8 1 1.5 10° II Ss 22 22 — 6.5 2.2 3 11 1.8 1 2 10” ’24 24 — 7 3 3 11 2 1 2.5 10° 27 2-I — 7.5 3.5 3.5 14 2.5 1 2.5 10° 30.5 30.5 — 8 3.5 3.5 14 2.5 1 2.5 I@ )For400 mmdiameter and smaller, increase depth ffI by 1mm )The dimcn5ion HI inconjunction with dimension .LI defines the unobstructed space above therim base and the niPPle heads. with the imtape fitted, topermit satisfactory tyre fitment. The actual well depth oftherimshall bedefined atthediscretion ofrim manufacturers oachieve this objective. JFor ~o}ledfires with nominal rim diameter of400 mm and smaller, B= 15°~ 10”. IS 624:2003 Table 3 Specified and Measuring Rim Diameters for Straight Side Rims (Clauses 3.2, A-4.2 and Fig. 2 ) Alldhensions inmillimetres. Type Nominal Rim Diameter Code Specified Rim Diameter, D Measuriog Rim Diameter’), DI (1) (2) (3) (4) 194 194.2 193.85 203 203.2 202.85 222 222.2 221.85 239 239.4 239.05 248 247.6 247.25 251 250.8 250.45 279 279.2 278.85 288 287.8 287.45 298 298.4 298.05 305 304.7 304.35 317 317 316.65 330 329.8 329.45 .337 336.6 336.25 340 339.6 339.25 349 349.2 348.85 355 355 354.65 357 357.1 356.75 369 368.6 368.25 381 380.9 380.55 387 387.1 386.75 390 389.6 389.25 400 400.1 399.75 406 405.6 405.25 Ss 419 418.6 418.25 428 428.1 427.75 432 431.6 431.25 438 437.7 437.35 440 439.9 439.55 451 450.8 450.45 484 484 483.65 489 488.6 488.25 490 490.2 489.85 498 497.5 497.15 501 501.3 500.95 507 507.3 506:95 520 520.2 519.85 531 530.6 530.25 534 533.5 533.15 540 539.6 539.25 541 540.8 540.45 547 546.5 546.15 559 558.8 558.45 565 564.9 564.55 571 571 570.65 584 583.9 583.55 590 590.2 589.85 597 597.2 5%.85 609 609.2 608.85 622 622.3 621.95 630 629.7 629.35 635 634.7 634.35 642 641.7 641.35 IJThe tolerance onthe memur~ bead seat circumference is [n Xmeasuringrirodi~e~r) ~1.5mm. 5