1、 MS16632C 1 May 2012 SUPERSEDING MS16632B 30 April 1990 DETAIL SPECIFICATION SHEET RING, RETAINING, EXTERNAL, CRESCENT (REDUCED SECTION TYPE) This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described here
2、in shall consist of this specification sheet and procurement specification MIL-R-21248. FIGURE 1. RING, RETAINING. INCH-POUND AMSC N/A FSC 5325 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. DIMENSIONS. S SHAFT (REF) D FREE E LARGE HEIGHT T
3、 1/ THICKNESS G W WIDTH R 3/ CH 3/ RECOMMENDED GROOVE (REF) OF RETAINED PART (REF) INCH MM BASIC TOL BASIC TOL BASIC TOL BASIC TOL BASIC TOL MAX MAX .125 3.2 .102 +.002 .031 .015 .106 .0015 .020 +.002 .014 .011 .156 4.0 .131 -.004 .037 .003 .015 .135 .0015 .020 -.000 .018 .014 .188 4.8 .161 .042 .01
4、5 .165 FIM 2/ .020 .021 .016 .219 5.6 .187 .044 .025 .193 .030 .021 .016 .236 6.0 .203 .046 .025 .208 .030 .022 .017 .250 6.4 .211 .050 .025 .220 .030 ,023 .018 .281 7.1 .242 .052 .025 .247 .002 .030 .021 .016 .312 7.9 .270 +.003 .053 .004 .025 .276 .002 .030 .024 .018 .375 9.5 .328 -.005 .060 .025
5、.335 FIM 2/ .030 .026 .020 .406 10.3 .359 .063 .025 .364 .030 .027 .021 .438 11.1 .386 .065 .025 .002 .393 .030 .029 .022 .500 12.7 .441 .070 .035 .450 .040 +.003 .030 .023 .562 14.3 .497 .006 .078 .035 .507 .040 -.000 .033 .025 .625 15.9 .553 .081 .035 .563 .040 .033 .025 .688 17.5 .609 .086 .042 .
6、619 .047 .034 .026 .005 .003.750 19.0 .665 .090 .042 .676 .004 .047 .036 .027 .812 20.6 .721 .007 .097 .042 .732 FIM 2/ .047 .038 .029 .875 22.2 .777 .105 .042 .789 .047 .040 .031 .938 23.8 .830 .112 .042 .843 .047 .043 .033 1.000 25.4 .887 .120 .042 .900 .047 .046 .035 1.125 28.6 .997 .135 .050 1.0
7、13 .056 .052 .040 1.250 31.7 1.110 .008 .150 .050 1.126 .004 .056 +.004 .057 .044 1.375 34.9 1.220 .165 .007 .050 1.237 .005 .056 -.000 .062 .048 1.500 38.1 1.331 .180 .050 1.350 FIM 2/ .056 .069 .053 1.750 44.4 1.555 .010 .210 .062 .003 1.576 .005 .068 .081 .062 2.000 50.8 1.777 .240 .062 1.800 .00
8、5 .068 .091 .070 FIM 2/ 1/ T - THICKNESS “T” APPLIES TO UNPLATED RINGS. FOR CORROSION RESISTANT STEEL AND PLATED RINGS, +.002 SHOULD BE ADDED TO THE MAXIMUM TOLERANCE, i.e. .002 SHOULD BE +.004/-.002. 2/ FIM - (FULL INDICATOR MOVEMENT) IS THE MAXIMUM ALLOWABLE DEVIATION OF CONCENTRICITY BETWEEN THE
9、GROOVE AND THE SHAFT. 3/ R AND CH - RADII OR CHAMFERS ALLOWABLE ON PARTS TO BE RETAINED BY THE RINGS. ALLOWABLE THRUST LOADS FOR RINGS RETAINING PARTS WITH MAXIMUM CORNER RADII OR CHAMFERS ARE LSTED IN TABLE VI ON PAGE 8. MS16632C 2 Provided by IHSNot for ResaleNo reproduction or networking permitte
10、d without license from IHS-,-,-REQUIREMENTS: 1. CLASSIFICATION: RETAINING RINGS FURNISHED UNDER THIS STANDARD SHALL BE TYPE I, CLASS 6 OF THE PROCUREMENT SPECIFICATION. 2. MATERIAL: (a) CARBON SPRING STEEL, GRADE 1060 THRU 1095 (UNS G10600 THRU G10950) IN ACCORDANCE WITH ASTM A 568/A568M OR ASTM A68
11、4/A684M. (b) CORROSION RESISTANT STEEL, IN ACCORDANCE WITH SAE AMS 5520 (UNS S15700). (c) BERYLLIUM COPPER, ALLOY NUMBER 170 (UNS C17000) OR ALLOY NUMBER 172 (UNS C17200) IN ACCORDANCE WITH ASTM B194. 3. HARDNESS TABLE II. HARDNESS. SHAFT (REF) CARBON STEEL CORROSION RESISTANT STEEL BERYLLIUM COPPER
12、 .125 TO .438 INCL 84.5-87.0 HRI5N 1/ 82.5-86 HRI5N 1/ 77-82 HRI5N 1/ .500 TO .625 INCL 66.5-71.5 HR30N 1/ 63-69.5 HR30N 1/ 54-62 HR30N 1/ .688 TO 1.000 INCL 52.5-58.5 HR45N 1/ 48-56 HR45N 1/ 36-47 HR45N 1/ 1.125 TO 2.000 INCL 48-53 HRC 44-51 HRC 34-43 HRC 1/ USE HIGHEST SCALE TO PROVIDE SECTION WID
13、TH EQUAL TO OR GREATER THAN 5 TIMES THE BRAILE IMPRESSION DIAMETER. 4. PROTECTIVE FINISH OR TREATMENT: a. CARBON STEEL - SHALL BE AS SPECIFIED (SEE TABLE Ill OR IV) 1. CADMIUM PLATE IN ACCORDANCE WITH SAE AMS-QQ-P-416, TYPE II, CLASS 3 OR ASTM B 696, TYPE II, CLASS 5. 2. ZINC COAT IN ACCORDANCE WITH
14、 ASTM B633, TYPE II, CLASS Fe/Zn 5 or ASTM B 695, TYPE II, CLASS 5. 3. PHOSPHATE COAT IN ACCORDANCE WITH MIL-DTL-16232, TYPE Z, CLASS 2. b. CORROSION RESISTANT STEEL - SHALL BE CLEANED, DESCALED AND PASSIVATED IN ACCORDANCE WITH SAE AMS2700. 5. PART NUMBER: THE BASIC MS PART NUMBER IS FOLLOWED BY A
15、DASH NUMBER TAKEN FROM TABLE Ill OR IV. EXAMPLE: MS16632-1100 IS THE PART NUMBER FOR A CARBON STEEL, CADMIUM PLATE, EXTERNAL, CRESCENT RETAINING RING FOR USE ON A 1.000 SHAFT DIAMETER. MS16632C3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I
16、II. DASH NUMBERS FOR MS16632. 1/ SUBSTITUTE CORROSION RESISTANT STEEL WHEN USED IN FOOD PROCESSING MACHINERY, OR IN FUEL OR LUBRICATION SYSTEMS, OR WHEN USED AT TEMPERATURES OVER 450F (233C). S SHAFT (REF) 1/ CARBON STEEL CADMIUM PLATE 1/ CARBON STEEL ZINC COAT 1/ CARBON STEEL PHOSPHATE COAT STEEL C
17、ORROSION RESISTANT 1/ BERYLLIUM COPPER DASH NO DASH NO DASH NO DASH NO DASH NO .125 -1012 -2012 -3012 -4012 -5012 .156 -1015 -2015 -3015 -4015 -5015 .188 -1018 -2018 -3018 -4018 -5018 .219 -1021 -2021 -3021 -4021 -5021 .236 -1023 -2023 -3023 -4023 -5023 .250 -1025 -2025 -3025 -4025 -5025 .281 -1028
18、-2028 -3028 -4028 -5028 .312 -1031 -2031 -3031 -4031 -5031 .375 -1037 -2037 -3037 -4037 -5037 .406 -1040 -2040 -3040 -4040 -5040 .438 -1043 -2043 -3043 -4043 -5043 .500 -1050 -2050 -3050 -4050 -5050 .562 -1056 -2056 -3056 -4056 -5056 .625 -1062 -2062 -3062 -4062 -5062 .688 -1068 -2068 -3068 -4068 -5
19、068 .750 -1075 -2075 -3075 -4075 -5075 .812 -1081 -2081 -3081 -4081 -5081 .875 -1087 -2087 -3087 -4087 -5087 .938 -1093 -2093 -3093 -4093 -5093 1.000 -1100 -2100 -3100 -4100 -5100 1.125 -1112 -2112 -3112 -4112 -5112 1.250 -1125 -2125 -3125 -4125 -5125 1.375 -1137 -2137 -3137 -4137 -5137 1.500 -1150
20、-2150 -3150 -4150 -5150 1.750 -1175 -2175 -3175 -4175 -5175 2.000 -1200 -2200 -3200 -4200 -5200 MS16632C4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE IV. SUBSTITUTION TABLE, CROSS REFERENCE PART NUMBERS 1/ SUBSTITUTE CORROSION RESISTANT STE
21、EL WHEN USED IN FOOD PROCESSING MACHINERY, OR IN FUEL OR LUBRICATION SYSTEMS, OR WHEN USED AT TEMPERATURES OVER 450F (233C). S SHAFT (REF) INACTIVE SUBSTITUTE SUBSTITUTE SUBSTITUTE CARBON STEEL 1/ CARBON STEEL CADMIUM PLATE 1/ CARBON STEEL ZINC COAT 1/ CARBON STEEL PHOSPHATE COAT MS16632 MS16632 MS1
22、6632 MS16632 .125 -12 -1012 -2012 -3012 .156 -15 -1015 -2015 -3015 .188 -18 -1018 -2018 -3018 .219 -21 -1021 -2021 -3021 .236 -23 -1023 -2023 -3023 .250 -25 -1025 -2025 -3025 .281 -28 -1028 -2028 -3028 .312 -31 -1031 -2031 -3031 .375 -37 -1037 -2037 -3037 .406 -40 -1040 -2040 -3040 .438 -43 -1043 -2
23、043 -3043 .500 -50 -1050 -2050 -3050 .562 -56 -1056 -2056 -3056 .625 -62 -1062 -2062 -3062 .688 -68 -1068 -2068 -3068 .750 -75 -1075 -2075 -3075 .812 -81 -1081 -2081 -3081 .875 -87 -1087 -2087 -3087 .938 -93 -1093 -2093 -3093 1.000 -100 -1100 -2100 -3100 1.125 -112 -1112 -2112 -3112 1.250 -125 -1125
24、 -2125 -3125 1.375 -137 -1137 -2137 -3137 1.500 -150 -1150 -2150 -3150 1.750 -175 -1175 -2175 -3175 2.000 -200 -1200 -2200 -3200 MS16632C 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTES: 1. UNLESS OTHERWISE SPECIFIED, ALL DIMENSIONS ARE IN IN
25、CHES. 2. IN THE EVENT OF A CONFLICT BETWEEN THE TEXT OF THIS STANDARD AND THE REFERENCES CITED HEREIN, THE TEXT OF THIS STANDARD SHALL TAKE PRECEDENCE. 3. RECOMMENDED DESIGN LIMITATIONS AND USAGE. (a) INTENDED USE- TO PROVIDE SHOULDERS FOR POSITIONING AND MAINTAINING MACHINE PARTS ON SHAFTS WHICH AR
26、E AXIALLY INACCESSIBLE IN ASSEMBLY THEY ARE APPLIED RADIALLY AND BECAUSE OF DEEP GROOVES, HAVE HIGH THRUST CAPACITY. THEY ARE OF ADVANTAGE WHERE FAST ASSEMBLY FOR MASS PRODUCTION LINES IS ESSENTIAL AND WHERE COMPARATIVELY SMALL CLEARANCE DIAMETERS ARE DESIRABLE. THE USE OF THE FOLLOWING FORMULAS ARE
27、 BASED ON THE FACT THAT THE RING WILL NOT FAIL IN COMPRESSION. LIMITATION ON USE- THE FOLLOWING FORMULAS ARE NOT TO BE USED FOR BRITTLE MATERIALS SUCH AS CAST IRON, ETC. WARNING - RINGS SHOULD NOT BE OVER EXPANDED DURING INSTALLATION SINCE THIS WILL LEAD TO RING FAILURE. IF RING HAS PLAY BETWEEN THE
28、 GROOVE DIAMETER AND THE INSIDE RING DIAMETER THIS INDICATES THAT THE RING HAS BEEN OVER EXPANDED, (PROVIDING GROOVE HAS BEEN MACHINED TO RECOMMENDED DIMENSIONS). FOR APPROXIMATE SAFETY RPM LIMITS SEE TABLE V. TABLE V. APPROXIMATE SAFETY RPM LIMITS. SHAFT(INCHES) .250 .500 1.000 2.000 CARBON STEEL A
29、ND CORROSION RESISTANT STEEL RPM LIMIT 60,000 25,000 12,500 6,000 BERYLLIUM COPPER RPM LIMIT 38,000 16,000 (b) ALLOWABLE THRUST LOAD CAPACITY OF THE RINGS. ABUTTING COMPONENTS TO HAVE SHARP CORNERS= P = ALLOWABLE THRUST LOAD (POUNDS) P = STX S = SHAFT DIAMETER (INCHES) 2F WHERE: T = RING THICKNESS (
30、INCHES) X = ULTIMATE SHEAR STRENGTH OF THE RING MATERIAL (PSI) 1/ F = FACTOR OF SAFETY A SAFETY FACTOR, F= 4, IS RECOMMENDED SINCE THE RING UNDER LOAD IS SUBJECTED NOT ONLY TO PURE SHEAR STRESSES, BUT ALSO TO BENDING STRESSES. (c) ALLOWABLE LOAD CAPACITY OF GROOVE WALL P = ALLOWABLE COMPRESSION LOAD
31、 (POUNDS) P = GdY G = GROOVE DIAMETER (INCHES) 2F WHERE: d = GROOVE DEPTH (INCHES) Y = YIELD STRENGTH IN COMPRESSION OF THE GROOVE MATERIAL (PSI) F = FACTOR OF SAFETY TO INSURE A SAFE WORKING LOAD, A SAFETY FACTOR, F= 2, IS RECOMMENDED. 1/ X = 120,000 PSI ULTIMATE SHEAR STRENGTH FOR RINGS UP TO AND
32、INCLUDING .625 INCH SHAFT DIAMETER OF CARBON STEEL OR CORROSION RESISTANT STEEL. X = 150,000 PSI ULTIMATE SHEAR STRENGTH FOR RINGS .688 INCH AND OVER SHAFT DIAMETER OF CARBON STEEL OR CORROSION RESISTANT STEEL. X = 110,000 PSI ULTIMATE SHEAR STRENGTH FOR RINGS OF ALL SHAFT DIAMETERS AND OF BERYLLIUM
33、 COPPER. MS16332C6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(d) MINIMUM DISTANCE BETWEEN OUTER GROOVE WALL AND END OF SHAFT = Z= 2d Z = MINIMUM DISTANCE BETWEEN OUTER GROOVE AND END OF SHAFT (INCHES) WHERE: d = GROOVE DEPTH (INCHES) (e) DIFFERE
34、NTIAL ROTATION = THE CONDITIONS UNDER WHICH A RETAINING RING MAY BE USED WHEN ADJACENT PARTS ROTATE RELATIVE TO IT, FALL INTO TWO CATEGORIES: 1. WHERE NO THRUST IS EXERTED BY ADJACENT PART; IN THIS CASE, DIFFERENTIAL ROTATION OF RING AND ADJACENT PART CREATES NO ELEMENT OF RISK IN THE APPLICATION OF
35、 THE RINGS BECAUSE NO FUNCTIONAL TORQUE IS EXERTED BY THE MACHINE PART ON THE RING. 2. CONSIDERATION MUST BE GIVEN TO THE MAGNITUDE OF THE THRUST INVOLVED. THE FRICTION MOMENT MAY NOT EXCEED THE BENDING MOMENT, WHICH THE RING CAN TOLERATE WITHOUT RELEASING ITS PRESSURE AGAINST THE BOTIOM OF THE GROO
36、VE, FORMULATED AS FOLLOWS: P = ALLOWABLE THRUST LOAD EXERTED BY ADJACENT PART (POUNDS) fPN sTE2f = COEFFICIENT OF FRICTION 18 OR s = WORKING STRESS OF RING UNDER MAXIMUM EXPANSION (PSI) 2/ WHERE: T = RING THICKNESS (INCHES) P sTE2E = LARGEST WIDTH SECTION OF RING (INCHES) f18N N = NEUTRAL RING DIAME
37、TER (INCHES) = FREE DIAMETER PLUS 1 1/2 E DIMENSION IN SUCH CASES WHERE DIFFERENTIAL ROTATION OCCURS, THE CALCULATION SHOULD BE BASED ON THE MAXIMUM POSSIBLE VALUE OF THE COEFFICIENT OF FRICTION. (f) IMPACT CAPACITY OF RING OR GROOVE WALL = IR= PT - FOR THE RING (INCH POUNDS), ABUTTING COMPONENTS TO
38、 HAVE SHARP CORNERS. 2 IG= Pd - FOR THE GROOVE (INCH POUNDS) 2 P = ALLOWABLE THRUST LOAD OF RING OR GROOVE (POUNDS)WHERE: T = RING THICKNESS (INCHES)IG= IMPACT CAPACITY OF GROOVE WALL (INCH POUNDS)d = GROOVE DEPTH (INCHES)IR= IMPACT CAPACITY OF RING (INCH POUNDS) (g) LOAD CAPACITY, WITH THE RETAINED
39、 PART RADIUSED OR CHAMFERED = WHEN THE RADIUS OR CHAMFER OF THE RETAINED PART DOES NOT EXCEED THE MAXIMUM RADIUS ALLOWED FOR THE BOTTOM OF THE RING GROOVE, THE LESSER LOAD CAPACITY COMPUTED FROM THE FORMULAS ON PAGES 6 AND 7 WILL APPLY. THE CORNER RADII AND CHAMFERS LISTED ON TABLE I WERE CHOSEN AS
40、LARGE AS POSSIBLE FOR THE RING SIZES INVOLVED AND ARE RELATED TO THE MAXIMUM THRUST LOADS LISTED IN TABLE VI. IF THE CORNER RADII OR CHAMFERS ARE SMALLER THAN THOSE LISTED, THEN THE THRUST LOADS INCREASE PROPORTIONALLY, IN ACCORDANCE WITH THE FOLLOWING FORMULAS: P1= P CH p1 = NEW ALLOWABLE THRUST LO
41、AD CH1 OR P = LISTED ALLOWABLE THRUST LOAD WHERE: CH1= NEW (SMALLER) CHAMFER CH = LISTED CHAMFER P1= PR R1 = NEW (SMALLER) CORNER RADIUS R1R = LISTED CORNER RADIUS 2/ S = 250,000 PSI WORKING STRESS FOR RINGS OF CARBON STEEL OR CORROSION RESISTANT STEEL. S = 180,000 PSI WORKING STRESS FOR RINGS OF BE
42、RYLLIUM COPPER. MS16632C 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-LIMIT LOADS LISTED IN TABLE VI ARE BASED ON RINGS OF CARBON STEEL OR CORROSION STEEL (WORKING STRESS 250,000 PSI). IF THE ALLOWABLE GROOVE CAPACITY LOADS AS CALCULATED BY USING
43、 THE FORMULA ON PAGE 7 ARE LESS, THEN THEY SHOULD BE USED. TABLE VI. LIMIT LOADS. S NOMINAL RING SIZE ALLOWABLE THRUST LOAD FOR RING ASSEMBLIES WITH PARTS HAVING MAXIMUM CORNER RADII OR CHAMFERS FROM TO CARBON STEEL OR CORROSION RESISTANT STEEL BERYLLIUM COPPER .125 90 LB 65 LB .156 105 LB 75 LB .18
44、8 110 LB 80 LB .219 260 LB 185 LB .236 275 LB 200 LB .250 290 LB 210 LB .281 .438 310 LB 220 LB .500 .625 610 LB 440 LB .688 1.000 880 LB 1.125 1.500 1250 LB1.750 2.000 1920 LB4. CHANGES FROM PREVIOUS ISSUE. MARGINAL NOTATIONS ARE NOT USED IN THIS REVISION TO IDENTIFY CHANGES WITH RESPECT TO THE PRE
45、VIOUS ISSUE DUE TO THE EXTENT OF THE CHANGES. MILITARY INTEREST Custodians: Preparing activity: Army - AR DLA - IS Navy - OS Air Force - 99 (Project 5325-2012-006) Review activities: Army MI Navy - AS NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.dla.mil. MS16632C 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
