ANSI ASME B27.6-1972 General Purpose Uniform Cross Section Spiral Retaining Rings.pdf

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1、AMERICAN NATIONAL STANDARD General Purpose Uniform Cross Section Spiral Retaining Rings ANSI B27.6 -1972 - _ . REAFFIRMED 1999 FOR CURRENT COMMITTEE PERSONNEL PLEASE SEE ASME MANUAL AS-11 SECRETARIAT SOCIETY OF AUTOMOTIVE ENGINEERS THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS PUBLISHED BY THE AMERIC

2、AN SOCIETY OF MECHANICAL ENGINEERS United Engineering Center 345 East 47th Street New York, N. Y. 1001 7 Any part of this standard may be quoted. Credit lines should read: “Extracted from American National Standard-General Purpose Uniform Cross Section Spiral Retaining Rings, ANSI B27.6-1972, with t

3、he permission of the publisher, The American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, N.Y. 1001 7.” THE AMERICAN SOCIETY OF MECHANlCAL ENGINEERS Copyright 1972 by Printed in U.S.A. FOREWORD Formation of Subcommittee 3 was authorized by Standards Com

4、mittee B27 at its meeting on November 30, 1950. Organization meeting of the Subcommittee was held on October 24, 1951 at which time it was agreed that bearing retainer rings, if included in the standard, would conform with practice of Anti-Friction Bearing Manufacturers Association and that technica

5、l development within the Subcom- mittee would be limited to general purpose retainer rings. Subgroups were ap- pointed to investigate materials, adequacy of the AFBMA bearing retainer ring standard, general purpose and aeronautical ring usage. One of the subgroups prepared a draft proposal, General

6、Purpose Uniform Sec- tion Spiral Retaining Ring, which was circulated to members of Subcommittee 3 on May 8, 1970. The next meeting of the Subcommittee was held on February 4, 1971 at which time changes were made to satisfy comments received as a result of this ballot. It was then agreed to circulat

7、e the revised draft proposal to the ANSI B27 Standards Committee. The letter ballot was circulated on August 17, 1971. All who responded balloted affirmative. Several of the affirmative ballots offered editorial type comments. Each comment was carefully reviewed by a sub- group and minor nontechnica

8、l changes were made to the document. The Standard was duly approved by sponsors and was submitted to the American National Standards Institute for designation, as an American Standard. This was granted on July 11, 1972. 111 . AMERICAN NATIONAL STANDARDS COMMITTEE B27 Washers and Machine Rings (The f

9、ollowing is the roster of the Committee at the time of approval of this standard) OFFICERS R. P. Trowbridge, Chairman Jules Freedman, Vice Choirman Jack Levy, Secretary AMERICAN HARDWARE MFRS. ASSN Ray Christenson, Wrought Washer Mfg. Co., Milwaukee, Wisconsin AMERICAN SOCIETY OF MECHANICAL ENGINEER

10、S, THE To be appointed ASSOCIATION OF AMERICAN RAILROADS J. K Bean, Association of American Railroads, Chicago, Illinois A. E. Hinson, Southern Railway Systems, Alexandria, Virginia FARM AND INDUSTRIAL EQUIPMENT INST. C. W. Stockwell, International Harvester Cod, Hinsdale, Illinois HELICAL WASHER IN

11、ST. To be appointed INDUSTRIAL FASTENERS INST. R. 6. Belford, Industrial Fasteners Inst., Cleveland, Ohio NATIONAL ELECTRICAL MFRS. ASSOCIATION F. V. Kupchok, Westinghouse Electric Corp., Pittsburgh, Pa, J. 6. Levy, General Electric Co., Schenectady, N.Y. SOCIETY OF AUTOMOTIVE ENGINEERS R. L. Berkbi

12、gler, Ramsey Corp., St. Louis, Missouri R. P. Trowbridge, General Motors Tech, Center, Warren, Michigan SPRING MFGRS. ASSOCIATION, INC. W. L. Abroms, Precision Spring Corp, Detroit, Michigan TELEPHONEGROUP, THE R. H. Van Horn, Bell Telephone Laboratories, Inc., Columbus, Ohio F. P. Bolacek, Alternat

13、e, Bell Telephone Laboratories, Columbus, Ohio M. c. Berryman, Alternate, Western Electric Co., Inc., Chicago, Illinois D. Lipori, Alternate, Bell Telephone Laboratories, Inc., Columbus, Ohio U.S. DEPT. OF THE ARMY R. C. Engelmann, Liaison, Rock Island Arsenal, Rock Island, Illinois 0. M. Kelley, Al

14、ternate, Rock Island Arsenal, Rock Island, Illinois U.S. DEPT. OF DEFENSE J. D. Jones, Defense Industrial Supply Center, Phila., Pa. U.S. DEPT. OF THE NAVY C. A. Fulesdy, Naval Ship Systems Command, Wash., D.C. INDIVIDUAL COMPANIES R. W. Bertoia, Ohio Nut however, in cer- tain cases these diameters

15、may be altered some- what to suit the requirements of a particular design. When such changes are made, care should be taken to not alter the shaft or housing size to such an extent that the ring will take enough permanent set to allow a loose fit after the ring has been assembled into the groove. Ne

16、ither should the groove diameter be altered to the ex- tent to permit the ring to fit loosely. 1.4 Dimensions All dimensions in this standard are in inches unless otherwise stated. 2.1.1 Carbon Spring Steel. Retaining rings made from carbon spring steel shall conform to the chemical composition of S

17、AE 1070 to 1090 or AIS1 1070 to 1090 or equivalent and have the following physical properties: Material Thickness (minimum) Rockwell Scale Tensile Strength (psi) Hardness 0.0067 15N 85-90 269,000-299,000 0.0142 30N 68-73 255,000-285,000 0.0213 A 72-78 221,000-251,000 0.0433 C 43-49 211,000-236.000 2

18、.1.2 Corrosion Resistant Steel. Retaining rings made from corrosion resistant steel shall conform to the chemical composition of SAE 30302 or equivalent and have the following physical properties: Material Thickness (minimum) Rockwell Scale Tensile Strength (psi) Hardness 0.008 15N 83.0-86.0 210,000

19、-250,000 0.016 30N 64.0-69.5 210,000-250,000 0.023 A 72.0-74.9 200,000-230,000 0.048 C 39.8-48.5 185,000-235,000 0.062 C 38.0-47.0 175,000-225,000 2.2 Finish Unless otherwise specified, rings shall be furnished with a natural (as processed) finish, unplated or uncoated. Where corrosion preventa- tiv

20、e treatment is required, rings shall be plated or coated as agreed upon between the manu- facturer and the purchaser. However, where plated or coated rings are subject to hydrogen embrittlement they shall be baked for three hours at 375OF, or other suitable times and temperatures, 1 AMERICAN NATIONA

21、L STANDARD GENERAL PURPOSE UNIFORM CROSS SECTION SPIRAL RETAINING RINGS ANSI 827.6-1972 as soon as possible after the plating or coating operation to obviate such embrittlement. 2.3 Crimp Unless otherwise specified by the purchaser, the following types of rings and sizes shall be uncrimped: Ring Typ

22、e Nominal Ring Size 2A01 Light Duty External 0.500-1.500 2A02 Heavy Duty External 0.469-0.688 2B01 Light Duty Internal 0.500-1.500 2B02 Heavy Duty Internal 0.469-0.750 All other rings shall be crimped. See Fig. 2 for crimp illustration. 2.4 Removal Notches or Slots Unless otherwise specified in the

23、contract or order, the rings shall have removal notches or slots as follows: Ring Type Ring Size Provision NomAI Removal 2A01 Light Duty External 0.500- 2.750 Notch 2.813-11.000 Slot 2A02 Heavy Duty External All Notch ZBO1 Light-Duty Internal 0.500- 2.750 Notch 2B02 Heavy Duty Internal All Notch 2.8

24、13-11.000 Slot 2.5 Dish The dish shall be considered the height dif- ference indicated in Figure 1 and shall not ex- ceed the values shown in the following table: Radial Wall Maximum Allowable Dish 0-0.039 0.001 0.040-0.069 0.002 0.070-0.099 0.003 0.100-0.129 0.004 0.130-0.159 0.005 0.160-0.194 0.00

25、6 0.195-0.224 0.007 0.225-0.259 0.008 0.260-0.294 0.009 0.295-0.339 0.010 0.340-0.394 0.01 1 0.395-0.474 0.012 0.475-0.649 0.013 0.650-1.000 0.014 7 b- FIGURE 1 2.6 Misalignment The leaves of the ring shall lie above each other as specified below and illustrated in Figure 2: Nominal Ring Size Maximu

26、m Misalienment 0.375-0.984 1.000-1.969 2.000-5.905 6.000 and above 0.010 0.020 0.045 0.070 CRIMP MISALIGNMENT FIGURE 2 2.7 Lateral Deformation Lateral deformation may be cutoff deformation or lateral kink as illustrated. Lateral kink usually exists over a short section of the ring circum- ference an

27、d is not the same as helix which is a uniform slope along the entire 360 degrees. Lateral deformation shall be inspected by placing the ring between parallel hardened and ground steel platens equipped with a deflection gage graduated in thousandths so located that read- ings are obtained at approxim

28、ately the center of 2 AMERICAN NATIONAL STANDARD SPIRAL RETAINING RINGS GENERAL PURPOSE UNIFORM CROSS SECTION the platens. The specimen shall then be com- pressed under a ten (IO) pound load and the distance between the platens determined. The ring shall be acceptable if this distance does not excee

29、d the minimum recommended groove width F”. A comparatively simple inspection fixture is depicted in Figure 4. 2.8 Ring Section Edge Radius (R) (1 The edges of the ring material shall be rounded and the radius shall not be less than T/8 nor more than T/4 where T equals the ring thick- ness. Ring thic

30、kness shall be measured under 10 pounds load as illustrated in Figure 4 and de- scribed in Paragraph 2.7 but shall be measured in a location other than at the ring ends or gap. 2.9 Parallelism (P) The side outer surfates of the rings in the free state shall be parallel to each other within one half

31、the total tolerance of the ring section thickness as illustrated in Figure 3. Pmax = T - T = T total tolerance 2 FIGURE 3 2.10 Total Free Height (S) The maximum total free height, S, (refer- ence Column S and illustrations in Tables 1 through 4) shall not exceed the sum of the maxi- mum section thic

32、kness T, plus 0.375 x nominal section thickness Trio,: S, = T, + 0.375 Tn, 2.1 1 Workmanship Retaining rings shall be free from burrs, rust, pit marks, cracks and all other defects that might affect their serviceability. 2.12 Performance Test The suitability of the retaining rings with regard to uni

33、formity of temper and section shall be determined by the rings being capable of SUC- cessfully passing the following described tests. ANSI B27.6-1972 External rings after having been expanded to pass over external gage diameter “E” shall not in the free state be entered by external gage diameter “D”

34、 when the axes of the ring and gage are parallel. Internal rings after having been com- pressed to fit into internal gage diameter “E” shall not in the free state enter internal gage diameter “D” when the axes of the ring and gage are parallel. 2.13 Ring Gages 2.13.1 External Ring Gage Diameter E. T

35、he external ring gage diameter E is equal to the nominal shaft size, Bnom: E = Bnom 2.13.2 External Ring Gage Diameter D. The external ring gage diameter D is equal to the minimum recommended groove diameter, Cmin, minus 0.005 times the nominal shaft diameter, nom : D = Cmin - 0.005 B, 2.13.3 Intern

36、al Ring Gage Diameter E. The internal ring gage diameter E is equal to the nominal housing size, Bnom : E = nom 2.13.4 Internal Ring Gage Diameter D. The internal ring gage diameter D is equal to the maximum recommended groove diameter, C, plus 0.005 times the nominal housing diameter, Bnom: D = C,

37、+ 0.005 B, 2.14 Designation Nominal ring sizes are intended for use on corresponding nominal shaft sizes and housing bores. Where specifying these retaining rings on drawings, parts lists, purchase orders, etc., it is recommended the following data be included in the designation and appear in the se

38、quence shown: Product name (noun first), including the ANSI type designation and series ; nominal ring size; material; and protective finish, if required. See examples below: Ring Type 2A01 Light Duty External Re- Ring Type 2B02 Heavy Duty Internal Re- taining, 1.250, Steel, Cadmium Plated. taining,

39、 2.750, Corrosion Resistant Steel 3 AMERICAN NATIONAL STANDARD GENERAL PURPOSE UNIFORM CROSS SECTION SPI RAL RETAINING RI NGS ANSI B27.6-1972 3.0 ALTERNATE GROOVE DESIGN 4.0 ASSEMBLY PRECAUTIONS In applications where shafts are subjected Care should be exercised not to overexpand to critical bending

40、 loads or fatigue, it is recom- external rings or overcontract internal rings upon mended that the alternate groove design specified installation for this may lead to failure of the as- centration. grooves should not be used. in Figure 5 be used to minimize stress con- sembly. Rings which are radica

41、lly loose in DIAL INDICATOR 10 Ib. LOAD SLIP FIT PARALLEL STEEL RETAINER RING PLATENS FIGURE 4 INSPECTION FIXTURE 4 AMERICAN NATIONAL STANDARD GENERAL PURPOSE UNIFORM ROSS SECTION SPIRAL RETAINING RINGS ANSI B27.6-1972 FIGURE 5 ALTERNATE GROOVE DESIGN 5 -. (SEE GEN DATA 1 GAGE RADIAL LATERAL SHAFT D

42、EFORMATIONS DEFORMATIONS EXTERNAL RING R R SIZES.50 THRU 2.75 SIZES ENLARGED SECTION K-K REMOVAL PROVISIONS HEIGHT Table 1. Dimensions of Type 2A01 Light Duty External Retaining Rings, Grooves, and Gages v) rn 2 T Shaft T Ring G - E - Dia. - k 0.001 - 0.ooc 0.500 0.531 0.551 0.562 0.594 0.625 0.656

43、0.669 0.687 0.718 - 0.750 0.781 0.812 0.843 0.875 0.906 0.937 0.968 0.984 1.000 - t Radial Radius Defor- mation - s Total Free Heigh - - G C D - 0 z A T W B Nominal Size G 0.500 0.531 0.551 0.562 0.594 0.625 0.656 0.669 0.687 0.718 0.750 0.781 0.812 0.843 0.875 0.906 0.937 0.968 0.984 1 .ooo Free In

44、side Diameter Ring Thickness Section Width Groove Width Groove Radius Groove Dia. Free Gap Dia. t 0.000 - 0.001 - Min 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 0.156 1.187 0.187 0.187 0.187 - - - Min 0.454 0.485 0.505 0.516 0.548 0.572 0.604 0.616 0.63

45、4 0.666 0.697 0.728 0.758 0.790 0.815 0.847 0.876 0.903 0.917 0.933 - - - Min 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.023 0.029 0.029 0.029 0.029 0.029 0.029 3.029 0.035 0.035 0.035 - - - Min 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.060 0.060 0.060 0.060 0.060 0.

46、060 0.060 0.070 0.070 0.070 - - - Min 0,472 0.503 0.523 0.534 0.566 0.591 0.622 0.635 0.653 0.684 0.716 0.747 0.778 0.809 0.835 0.866 0.897 0.922 0.93E 0.954 - - - Max 0.476 0.507 0.527 0.538 0.572 0.597 0.628 0.641 0.659 0.690 0.722 0.753 0.784 0.815 0.841 0.872 0.903 0.928 0.944 0.960 - - - Max 0.

47、006 0.006 0.006 0.006 0.006 0.006 0.006 0.006 0.006 0.006 0.008 0.008 0.008 0.008 0.008 0.008 0.008 0.009 0.00s 0.005 - i - - Max 0.467 0.498 0.518 0.529 0.561 0.585 0.617 0.629 0.647 0.679 0.710 0.741 0.771 0.803 0.828 0.860 0.889 0.916 0.930 0.946 - - - Max 0.027 0.027 0.027 0.027 0.027 0.027 0.02

48、7 0.027 0.027 0.027 0.033 0.033 0.033 0.033 0.033 0.033 0.033 0.039 0.035 0.035 - - - Max - 0.048 0.048 0.048 0.048 0.048 0.058 0.058 0.058 0.058 0.058 0.068 0.068 0.068 0.068 0.068 0.068 0.068 0.078 0.07E 0.07E - - Max 0.344 0.344 0.344 0.344 0.344 0.344 0.344 0.344 0.344 0.344 0.344 0.344 0.344 3.

49、344 3.344 3.344 1.375 3.375 0.375 0.375 - - Max 0.033 0.033 0.033 0.033 0.033 0.033 0.033 0.033 0.033 0.033 0.039 0.039 0.039 0.039 0.039 0.039 0.033 0.045 0.045 0.045 - - Min Max 0.030 0.005 0.030 0.005 0.030 0.005 0.030 0.005 0.030 0.005 0.030 0.005 0.030 0.005 0.030 0.005 9.030 0.005 3.030 0.005 3.036 0.005 1.036 0.005 1.036 0.005 1.036 0.005 1.036 0.005 1.036 0.005 3.036 0.005 J.042 0.005 0.042 0.005 0.042 0.005 Min Max Max 0.003 0.010 0.010 0.003 0.036 0.036 0.010 0.003 0.036 0.010 0.003 0.036 0.010 0.003 0.036 0.003 0.010 0.036 0.003 0.010 0.036 0.003 0.010 0.03