ABMA-STD-18.1-1982-R1999.pdf

. . 2595532 o079772 587 ansvabma 18.1 adoption notice ansvabma 18.1 , “bearing needle roller and needle roller bearings metric design”, w a s adopted on 15 august i995 for use by the department of defense o d ) . proposed changes by dod activities must be submitted to the dod adopting activity: defense industrial supply center, a”: disc-ec, 700 robbin distribution is unlimited. copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- b abma copyright notice copyright* american bearing manufacturers association, inc., 1 982 these materials have been prepared by the american bearing manufacturers association, inc. however the information contained in these materials has not been independently verified by the american bearing manufacturers association or information handling services, inc. neither organization warrants or assumes any liability for the accuracy or completeness of these materials. copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- afbma 18.3 82 w 0873073 0000503 t22 d ! i 1 -. i american national standard afbma standard needle roller bearings radial, metric design sponsor the anti-friction bearing manufacturers association, inc. approved december 2,1982 american national standards institute, inc. reapprove d, ansi/ afbma (revision of ansiiafbma std. 18.1-1982 1 8 . 1 - 1 9 7 6 ) copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- afbma 38.3 82 m 0873073 0000504 yb9 . . . ., i . . - . . . ; , . . . . american national standard an american national standard implies a consensus of those sub- stantially concerned with its scope and provisions. an american national standard is intended as a guide to aid the manufacturer, the consumer, and the general public. the existence of an american national standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. american national standards are subject to periodic review and users are cautioned to obtain the latest editions. caution notice: this american national standard may be revised or withdrawn at any time. the procedures of the american national standards institute require that action be taken to reaffirm. revise, or withdraw this standard no later than five years from the date of publication. purchasers of american national standards may receive current information on all standards by calling or writing the american national standards institute. published by the anti-friction bearing manufacturers association, inc. 1235 jefferson davis highway, suite 704 arlington, virginia 22202 copyright 1983 by the anti-friction bearing manufacturers association, inc. copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- afbma 38.3 82 0873073 0000505 8t5 foreword (this foreword is not a part of american national standard 18.1-1976, metric design radial needle roller bearings.) this standard comprises a revision of ansiiafbma 18.1-1976, metric design radial needle roller bearings. all material which relates only to inch design product will be found in standard 18.2. most of the table numbers have been changed. using the numbering se- quence in this standard, major changes have been made to tables 4.3, 5.7 and 5.8. minor changes have been made to most of the other tables. the material in this standard conforms, where possible, to recommendations of the international standards organization, technical committee 4, rolling contact bearings, in whose work the u.s.a. has actively participated through delegates officially appointed by the american national standards institute. copies of is0 recommendations concerning rolling contact bearings (ball and roller bearings) are available from the american national standards insti- tute, inc., 1430 broadway, new york, n.y. 10018. suggestions for the improvement of this standard gained through experience with its use will be welcomed. these should be sent to the american national standards institute, inc., 1430 broadway, new york, n.y. 10018. the officers of sectional committee 83 of the american national standards institute and the organizations represented at the time this standard was sub- mitted are as follows: r. e. murtera, chairman j. j. whitsett, secretary american gear manufacturers association american society of mechanical engineers anti-friction bearing manufacturers association hydraulic institute national electrical manufacturers association national machine tool builders association society of automotive engineers society of manufacturing engineers u.s. department of the air force u.s. department of defense, disc u.s. department of the navy copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- other related afbma standards for ball and roller bearings and balls 1 -terminology 4 -tolerance definitions and gaging practices 7 -shaft and housing fits for metric radial ball and roller bearings (except tapered roller bearings) conforming to basic boundary plans 8.2 - ball and roller bearing mounting accessories, inch design 9 - load ratings and fatigue life for ball bearings 10 - metal balls 11 12 - instrument ball bearings 13 - roller bearing vibration and noise 14 - housing for bearings with spherical outside surfaces 15 - ball bearings with spherical outside surfaces and extended - load ratings and fatigue life for roller bearings inner ring width (includes eccentric locking collars) 16.2 -airframe ball, roller and needle roller bearing, inch design 17 18.1 - needle roller bearings - radial, metric design - needle rollers, metric design 18.2 - needle roller bearings - radial, inch design 19 - tapered roller bearings, radial, inch design 20 - metric ball and roller bearings (except tapered roller-bearings) conforming to basic boundary plans 21 - metric thrust needle roller and cage assemblies and thrust washers 21.2 - thrust bearings of ball, cylindrical roller, tapered roller and needle roller types, inch design 22 - spherical plain bearings, joint type an afbma standard is intended as a guide to aid the manufacturer, the consumer, and the general public. ,the existence of an afbma standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. afbma standards are subject to revision or withdrawal at any time and users who refer to an afbma standard should satisfy themselves that they have the latest information from the association. ii copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- *is,- afbma 18.1 82 = 0871073 0000507 678 = needle roller bearings radial, metric design contents section 1. scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1 2. identification code . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . 1 3. boundary dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . 4 4. tolerances . 4 5. fitting and mounting practice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . 5 5.1 general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,. . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . 5 5.2 needle roller bearings, drawn cup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.3 needle roller bearings, machined ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.4 needle roller and cage assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5.5 needle roller bearing track rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 list of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv . 111 copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- .i%* - afpma $8.3, 82 4 0871073 op00508 504 i list of tables* table no. tit le basic plans for bearing boundary dimensions 3.1 drawn cup, without inner ring part 1 mm . 8-9 i part 2 inches . 10-11 3.2 machined ring, without inner ring part 1 mm . 12 part2 inches . 13 3.3 inner ring part1 mm . 14 part 2 inches . 15 3.4 needle roller and cage assembly part 1 mm . 16-17 part 2 inches . 18-19 track roller, machined ring, 3.5 3.6 4.1 4.2 4.3 4.4 4.5 4.6 non-separable threaded stud part 1 mm . 20 part2 inches . 21 non-separable inner ring part 1 mm . 22 part2 inches . 23 bearing tolerance limits drawn cup, without inner ring part 1 mm . 24 part2 inches . 24 machined ring, without inner ring part 1 mm . 25 part2 inches . 25 inner ring . part 1 mm 26 part2 inches 26 . needle roller and cage assembly part 1 mm . 27 part2 inches . 27 track roller, machined ring, non-separable threaded stud part 1 mm . 28 part2 inches . 28 non-separable inner ring part1 mm . 29 part2 inches . 29 copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- table mo. 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 afbma 18.1 82 0871073 0000509 title mounting surface tolerance limits drawn cup, without inner ring outer ring stationary relative to load part 1 mm . . . . . . . part 2 inches . . . . . outer ring rotating relative to load part 1 mm . . . . . . part 2 inches . . . . machined ring, without inner ring outer ring stationary relative to load part 1 mm . . . . . part 2 inches . . . outer ring rotating relative to load part 1 mm . . . . . . . part 2 inches . . . . . 440 page . . . . . . . . . 30 . . . . . . . . . 30 . . . . . . . . . . . . . 31 . . . . . . . . . . . . . 31 . . . . . . . . . . . . . 32 . . . . . . . . . . . . . 32 . . . . . . . . . . . . . 33 . . . . . . . . . . . . . 33 inner r ing part 1 mm . . . . . . . . . . . . . . . . . . . . . 34 part2 inches . . . . . . . . . . . . . . . . . . . 34 needle roller and cage assembly part 1 mm . 35 part2 inches . . . . . . . . . . . . . . . . . . . 35 track roller, machined ring, non-separable threaded stud part 1 mm . . . . . . . . . . . . . . . . . . . . . 36 part2 inches 37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . non-separable inner ring part 1 mm 38 part2 inches . . . . . . . . . . . . . . . . . . . 39 this standard contains only metric design products. inch design products will be found in standard 18.2 (afbma standard 18.2) copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- afbma 38.3 82 m 0873073 ooooslo lb2 m dimension diameter type series o00 aaaa o0 needle roller bearings radial, metric design lu br icant crowned preservative cage material or integral seals or or outside surface aaa a 1. scope this standard for metric design industrial radial needle roller bearings and components includes: identification code boundary di mensions bearing tolerances fitting and mounting practice airframe needle roller bearings, needle roller thrust bearings, and bearings of other types are covered in separate afbma-ansi standards. 2. identi fication code 2.1 general. this code identifies and, as far as possible, describes each needle roller bearing or component on the basis of complete dimen- sional and functional interchangeability. this code establishes a universal language for de- scribing and identifying bearings and compon- ents in order to facilitate communications between the user and the manufacturer. the code is also intended to simplify the handling by user personnel of identical bearings made by different manufacturers, whose identification numbers may be different and difficult to interpret. this code applies only to those radial needle roller bearings or components whose boundary dimensions and tolerances conform to this standard. 2.2 structure of code. as shown in the following table, schematic arrangement of a complete code number, the code consists of three sections. section 1, called the basic number, includesa diameter symbol made up of a group of numerals, followed by a type symbol made up of a group of letters and finally by a dimension series symbol made up of a group of numerals. this basic number must always be used. sections 2 and 3 delineate modification of design and lubricants and, if required to com- plete the identification, consist of additional letters. in the schematic arrangement tables, “o” represents any code numeral and “a” represents any code letter. schematic arrangement of a complete code number section 1, basic number section 3 1 i i section 2 copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- afqma 18-1 82 0871073 00005ll ot9 l symbol a. needle roller bearings, drawn cup (cont.)* description 2.2.1 section, basic number ,nh nhm i schematic arrangement of section 1 needle roller bearing, with cage, drawn cup, without inner ring. needle roller bearing, with cage, drawn cup, closed end, without inner ring. diameter o00 the diameter is indicated by two or three numerals comprising the diameter symbol as shown in boundary dimension tables 3.1-3.6. type dimension series aaaa o0 the type is indicated by two, three or four letters comprising the type symbol shown in 2.2.2. symbol the dimension series is indicated by two numerals. the first numeral indicates the width series and the second, the diameter series. both are shown in boundary dimension tables 3.1 -3.6. description 2.2.2 bearing and component type symbols symbol - symba description nb nm nbm needle roller and cage assembly. ny nym a. needle roller bearings, drawn cup description needle roller bearing, full complement, drawn cup, without inner ring. needle roller bearing, full complement, drawn cup, closed end, without inner ring. needle roller bearing, full complement, rollers re- tained by lubricant, drawn cup, without inner ring. “ needle roller bearing, full- complement, rollers re- tained by lubricant, drawn cup, closed end, without inner ring. ii b. needle roller bearings, machined ring * symbol description cage, machined ring, lubri- i cation hole and groove in ii i od, without inner ring. i _ . boundary dimensions shown in table 3.2. inner rings, type symbol nr may be used with metric design ma- chined ring bearings, type symbol na. needle roller bearing inner ring, lubrication hole and groove in bore. boundary dimensions shown in table 3.3. machined ring needle roller bearings, type na may be used with metric design inner rings. type symbol nr. d. needle roller and cage assemblies* 1 boundary dimensions shown in table 3.4. this standard contains only metric design products. inch design products will be fwnd in standard 18.2 (afbma standard 18.2). copyright american bearing manufacturers association provided by ihs under license with abma licensee=ihs employees/1111111001, user=wing, bernie not for resale, 03/24/2007 09:38:49 mdtno reproduction or networking permitted without license from ihs -,-,- afbma 18-1 82 w 0871073 0000512 t35 9 no symbol u sed a e. needle roller bearing track rollers * manufacturers regular preservative or lubricant for the particular bearing involved. special preservative or lubricant to satisfy particular conditions; for details refer to the bearing manufac- turer. symbol 1 description roller