Disclosure to Promote the Right To Information

Transcription

1 इ टरन ट म नक 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 counities 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. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS 5933 (2002): Rolling Bearings - Thrust Bearings - Tolerances [PGD 13: Bearing]! न $ एक न' भ रत क +नम-ण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

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4 m#h7wm77 1s0 199:1997 Indian Standard ROLLING BEARINGS THRUST BEARINGS TOLERANCES (Second Revision ) Ics BIS 2002 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI October 2002 Price Group 3

5 Rolling Bearings Sectional Coittee, BP 32 NATIONAL FOREWORD This Indian Standard (Second Revision) which is identical with ISO 199:1997 Rolling bearings Thrust bearings Tolerances issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recoendation of the Rolling Bearings Sectional Coittee and approval of the Basic and Production Engineering Division Council. This standard was first published in 1970 based on lso/r 199-1:1961 and 1S :1968 and was revised in 1993 aligning with ISO 199:1979. In this second revision the standard has been aligned with the current version of this ISO standard. The text of the ISO Standard has been approved as suitable for publication as Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: a) Wherever the words International Standard appear referring to this standard, they should be read as Indian Standard. b) Coa (,) has been used as a decimal marker in the International Standard while in Indian Standards; the current practice is to use a point (.) as the decimal marker. In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards which are to be substituted in their place are listed below along with their degre~of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of Equivalence ISO 104 : 1994 Rolling bearings IS 5932:1999 Rolling bearings Thrust Thrust bearings Boundary bearings Boundary dimensions, dimensions, general plan general plan (first revision) ISO 582 : 1995 Rolling bearings IS 5934 : 1999 ) Rolling bearings Chamfer dimensions Maximum Chamfer dimensions Maximum values values Specification (second revision) ISO 1132 : 1980 Rolling bearings IS 11027:1984 Definitions of tolerances Tolerances Definitions for rolling bearings ISO 5593 : 1997 Rolling bearings IS 2399 : 2002 Rolling bearings Vocabulary vocabulary (second revision) Identical Modified Identical do 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, 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. 1)Is 5934: I 987 is Identical with ISO 582: 1979 Version.

6 Indian Standard ROLLING BEARINGS THRUST BEARINGS TOLERANCES (Second Revision ) ISO 199: Scope This International Standard specifies tolerances for boundary dimensions (except chamfer dimensions) and for running accuracy of thrust rolling bearings with flat back faces specified in ISO 104. This International Standard does not apply to certain thrust bearings, e.g. needle roller bearings, or for particular fields of application, e.g. special precision bearings. Chamfer dimension limits are given in ISO Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 104:1994, Rolling bearings Thrust bearings Boundary dimensions, general plan. ISO 582:1995, Rolling bearings Chamfer dimensions Maximum values. ISO 1132:1980, Rolling bearings Tolerances Definitions, ISO 5593:1997, Rolling bearings Vocabulary. 3 Definitions For the purposes of this International Standard the definitions given in ISO 1132 and ISO 5593 apply.

7 1s0 199: Symbols The symbols (except those for tolerances) and the values given in the tables denote nominal dimensions unless specified otherwise. d bore diameter of shaft washer, single-direction bearing d2 bore diameter of shaft washer, double-direction bearing &mp deviation of mean bore diameter in a single plane of shaft washer, single-direction bearing 4i2nlp deviation of mean bore diameter in a single plane of shaft washer, double-direction bearing D outside diameter of housing washer AD.P deviation of mean outside diameter in a single plane of housing washer se variation in thickness between housing washer raceway and back face NOTE Applies only to ball thrust bearings and cylindrical roller thrust bearings with 90 contact angle. s, variation in thickness between shaft washer raceway and back face NOTE Applies only to ball thrust bearings and cylindrical roller thrust bearings with 90 contact angle. T bearing height, single-direction bearing T, bearing height, double direction bearing & deviation of the actual bearing height, single-direction bearing &,, deviation of the actual bearing height, double-direction bearing VdP variation of bore diameter in a single plane of shaft washer, single-direction bearing V@ variation of bore diameter in a single plane of shaft washer, double-direction bearing VDP variation of outside diameter in a single radial plane of housing washer 5 Tolerances Tables 1 to 8 give the tolerances for single-direction and double-direction thrust bearings. 2

8 1s0 199: Normal tolerance class See tables 1 and 2. d and dz Table 1 Shaft washer and bearing ~dmp, Ad.2mp Vdp, Vdzp height Tolerancevaluesin micrometres s, AT, ATIS > < high low max. max. high low high low lo oo JOTE Fordouble-directionbearingsthe valuesapplyonly up to and including d2 = 190. D Table 2 Housing AD.P washer VL), se > < high low max. max Identical to S, of shaft washer of same bearing loo IOTE For double-direction bearings the values apply only up to and includin$ ) =

9 1s0 199: Tolerance class 6 See tables 3 and 4. Table 3 Shaft washer and bearing height d and dz A(imp, &2mp I &, V(izp s, 4. Am > s high low max. max. high low high low lo loo JOTE For double-direction bearings the values apply only up to and including d2 = 190. D Table 4 Housing ADmP washer VDD se > < high low max. max o Identical to S, of shaft washer of same bearing loo dote For double-direction bearings the values apply only up to and including ~ = 360.

10 1s0 199: Tolerance class 5 See tables 5 and 6. Table 5 Shaft washer and bearing height d and dz AdmP,&mP V&, VdzP s, AT, ATIs > < high low max. max. high low high low lo loo JOTE For double-direction bearings the values apply only up to and including d2 = 190. D Table 6 Housing AD.~ washer VDP se > < high low max. max Identical to S, of shaft washer of same bearing loo dote For double-direction bearings the values apply only up to and including 9=360.

11 1s0 199: Tolerance class 4 See tables 7 and 8. Table 7 Shaft washer and bearing height d and d2 Admp,Ad2mp Vdp,Vdzp s, AT, ~TIs > < high low max. max. high low high. low lo JOTE For double-direction bearings the values apply only up to and including d2 = 190. D Table 8 Housing AD.P washer VDp se > < high low max. max , Identicalto Si of shaft washer of same bearing dote For double-direction bearings the values apply only up to and includin$ ~ = 360.

12 Bureau of Indian Standards BIS is a statutory institution established under the Bureau of hcfian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of coents. Standards are also reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of BIS Catalogue and Standards: Monthly Additions. This Indian Standard has been developed from Doc : No. BP 32 (0273). Amendments Issued Since Publication Amend No. Date of Issue Text Affected Headquarters : BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi Telegrams : Manaksanstha Telephones : , , (Coon to all offices) Regional Offices : Telephone Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg NEW DELHI { Eastern : 1/14 C.I.T. Scheme Vll M, V. 1.P. Road, Kankurgachi : KOLKATA { , Northern : SCO , Sector 34-A, CHANDIGARH Southern : C.I.T. Campus, IV Cross Road, CHENNAI { { , , Western : Manakalaya, E9 MlDC, Marol, Andheri (East) , MUMBAI { , Branches : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR. NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM. Printed at Prabhat Offset Press, New Delhi-2