DLA MS90707 REV C-2012 RING RETAINING EXTERNAL GRIP.pdf

1、MS90707C 16 OCTOBER 2012 SUPERSEDING MS90707B 25 August 1989 DETAIL SPECIFICATION SHEET RING, RETAINING, EXTERNAL GRIP This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of thi

2、s 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 B LUG HEIGHT E LARGE HEIGHT J SMALL SECT

3、ION HEIGHT T 1/ THICKNESS C 2/ CLEAR R 3/ CH 3/ G W OF RETAINED PART (REF) WIDTH INCH MM TOL BASIC TOL BASIC TOL BASIC TOL BASIC TOL BASIC TOL MAX MAX BASIC TOL BASIC TOL .094 2.4 .089 +.002 .078 .008 .045 .028 .025 .26 .042 .025 SIZES .094 THROUGH .187 ARE NOT RECOMMENDED FOR USE WITH GROOVES .125

4、3.2 .120 -.003 .078 .070 .004 .048 .004 .025 .002 .33 .054 .032 .156 4.0 .002 .150 +.002 .078 .003 .079 .051 .025 .36 .059 .035.187 4.8 .181 -.004 .097 .086 .052 .035 .44 .063 .038 .250 6.3 .238 .097 .101 .057 .035 .49 .072 .043 .240 +.0005 .041 +.003 -.0015 -.000.313 7.9 .298 +.003 .141 .114 .005 .

5、073 .005 .042 .003 .68 .080 .048 .303 .048 .376 9.5 .354 -.005 .141 .125 .075 .042 .74 .086 .051 .361 .048.437 11.1 .003 .412 .151 .004 .138 .083 .050 .81 .093 .056 .419 +.001 .056 .500 12.7 .470 .158 .140 .082 .050 .90 .100 .060 .478 -.002 .056 +.004 .625 15.9 .593 +.004 .180 .175 .006 .100 .006 .0

6、62 .004 1.06 .120 .072 .599 .069 -.000-.006 +.002 .750 19.0 .005 .706 .233 .176 .104 .062 1.32 .125 .075 .718 -.003 .069 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/

7、 C - ACTUAL CLEARANCE DIAMETER WHEN THE RING IS SPRUNG OVER THE SHAFT. (DESIGN REFERENCE DIMENSION). 3/ R AND CH - RADII OR CHAMFERS ALLOWABLE ON PARTS TO BE RETAINED BY THE RINGS. THRUST LOADS FOR RINGS, RETAINING PARTS WITH CORNER RADII OR CHAMFERS, ARE TABULATED ON PAGE 6. MS90707C2SHALLOW GROOVE

8、 (OPTIONAL)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-REQUIREMENTS: 1. CLASSIFICATION: RETAINING RINGS FURNISHED UNDER THIS STANDARD SHALL BE TYPE I, CLASS 7 OF THE PROCUREMENT SPECIFICATION. 2. MATERIAL: (a) CARBON SPRING STEEL, GRADE 1060 THRU

9、 1095 (UNS G10600 THRU G10950) IN ACCORDANCE WITH ASTM A 568/A568M OR ASTM A684/A684M. (b) CORRISION 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.

10、 HARDNESS. SHAFT (REF) CARBON STEEL CORROSION RESISTANT STEEL BERYLLIUM COPPER .094 TO .156 83.5-86 HR15N 82.5-86 HR15N 77-82 HR15N .187 TO .500 65-69.5 HR30N 63-69.5 HR30N 54-62 HR30N .625 TO .750 46-51 HRC 44-51 HRC 34-43 HRC 4. PROTECTIVE FINISH OR TREATMENT: (a). CARBON STEEL - SHALL BE (SEE TAB

11、LE 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 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) CORROSI

12、ON 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 DASH NUMBER TAKEN FROM TABLE Ill OR IV. EXAMPLE: MS90707-1025 IS THE PART NUMBER FOR A CARBON STEEL, CADMIUM PLATE, EXTERNAL GRIP, RETAINING RING F

13、OR USE ON A .250 DIAMETER SHAFT. TABLE III. DASH NUMBERS FOR MS90707 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

14、 1/ CARBON STEEL PHOSPHATE COAT STEEL, CORROSION RESISTANT 1/ BERYLLIUM COPPER DASH NO DASH NO DASH NO DASH NO DASH NO .094 -1009 -2009 -3009 -4009 -5009.125 -1012 -2012 -3012 -4012 -5012 .156 -1015 -2015 -3015 -4015 -5015.187 -1018 -2018 -3018 -4018 -5018.250 -1025 -2025 -3025 -4025 -5025 .313 -103

15、1 -2031 -3031 -4031 -5031.376 -1037 -2037 -3037 -4037 -5037 .437 -1043 -2043 -3043 -4043 -5043.500 -1050 -2050 -3050 -4050 -5050.625 -1062 -2062 -3062 -4062 -5062.750 -1075 -2075 -3075 -4075 -50753 MS90707C Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS

16、-,-,-. TABLE IV. SUBSTITUTION TABLE, CROSS REFERENCE OF PART NUMBERS INACTIVE SUBSTITUTE SUBSTITUTE SUBSTITUTE S SHAFT (REF) CARBON STEEL 1/ CARBON STEEL CADMIUM PLATE 1/ CARBON STEEL ZINC COAT 1/ CARBON STEEL PHOSPHATE COAT MS90707 MS90707 MS90707 MS90707 .094 -9 -1009 -2009 -3009.125 -12 -1012 -20

17、12 -3012 .156 -15 -1015 -2015 -3015.187 -18 -1018 -2018 -3018 .250 -25 -1025 -2025 -3025.313 -31 -1031 -2031 -3031 .376 -37 -1037 -2037 -3037.437 -43 -1043 -2043 -3043 .500 -50 -1050 -2050 -3050.625 -62 -1062 -2062 -3062 .750 -75 -1075 -2075 -30751/ SUBSTITUTE CORROSION RESISTANT STEEL WHEN USED IN

18、FOOD PROCESSING MACHINERY, OR IN FUEL OR LUBRICATION SYSTEMS, OR WHEN USED AT TEMPERATURES OVER 450F (233C). NOTES: 1. UNLESS OTHERWISE SPECIFIED, ALL DIMENSIONS ARE IN INCHES. 2. IN THE EVENT OF A CONFLICT BETWEEN THE TEXT OF THIS STANDARD AND THE REFERENCES CITED HEREIN, THE TEXT OF THIS STANDARD

19、SHALL TAKE PRECEDENCE. 3. RECOMMENDED DESIGN LIMITATIONS AND USAGE. (a) INTENDED USE- TO PROVIDE SHOULDERS FOR POSITIONING AND RETAINING MACHINE COMPONENTS ON UNGROOVED SHAFTS, TUBES, BOSSES, STUDS, ETC. FRICTION FORCE CAUSED BY HEAVY SPRING PRESSURE OF RING ON SHAFT MAKES FASTENER SECURE AGAINST AX

20、IAL DISPLACEMENT FROM EITHER DIRECTION UNDER MODERATE THRUST OR VIBRATION. THE RINGS ARE ADJUSTABLE ON THE SHAFT AND ARE RE-USABLE FOLLOWING DISASSEMBLY (SEE WARNING NOTE BELOW). THE RINGS WILL WITHSTAND HIGH ROTATIONAL SPEEDS. LIMITATION ON USE- THE FOLLOWING FORMULAS ARE NOT TO BE USED FOR BRITTLE

21、 MATERIALS SUCH AS CAST IRON, ETC. WARNING - RINGS SHOULD NOT BE OVER EXPANDED DURING INSTALLATION SINCE THIS WILL LEAD TO RING FAILURE. RINGS SHOULD ONLY BE EXPANDED TO GLIDE SMOOTHLY OVER THE SHAFT. FOR APPROXIMATE SAFETY RPM LIMITS SEE TABLE V. 4 MS90707C Provided by IHSNot for ResaleNo reproduct

22、ion or networking permitted without license from IHS-,-,-TABLE V. APPROXIMATE SAFETY RPM LIMITS. SHAFT(INCHES) .125 .250 .312 .375 .437 .500 .625 .750 CARBON STEEL AND CORROSION RESISTANT STEEL RPM LIMIT 80,000 77,000 58,000 51,000 44,000 40,000 32,000 25,000 BERYLLIUM COPPER RPM LIMIT 51,000 49,000

23、 37,000 32,000 28,000 25,000 20,000 16,000 (b) ALLOWABLE THRUST LOAD CAPACITY OF THE RINGS ARE LISTED IN TABLE VII. (c) THE RINGS ARE BASICALLY DESIGNED TO BE USED WITHOUT GROOVES. THE THRUST LOAD CAPACITY OF A GRIP RING ASSEMBLY MAY BE INCREASED SUBSTANTIALLY BY INSTALLING THE RING IN A SHALLOW GRO

24、OVE (ONLY FOR SIZES .250 AND OVER). THE STRENGTH OF THE GROOVE WALL THEN BECOMES THE LIMITING FACTOR IN THE ASSEMBLY. ALLOWABLE LOAD CAPACITY OF GROOVE WALL: (RETAINED PARTS HAVING SHARP CORNERS, OR RADII, OR CHAMFERS UP TO SPECIFIED LIMITS.) P = ALLOWABLE COMPRESSION LOAD (POUNDS) P = CFSdY S = SHA

25、FT DIAMETER (INCHES) F WHERE: d = GROOVE DEPTH (INCHES) Y = YIELD STRENGTH IN COMPRESSION OF THE GROOVE MATERIAL (PSI) F = FACTOR OF SAFETY, F= 2 IS RECOMMENDED TO INSURE A SAFE WORKING LOAD. CF = CONVERSION FACTOR,CF= 1 IS RECOMMENDED SINCE CONTACT AREA IN THE GROOVE WALL IS AROUND ENTIRE CIRCUMFER

26、ENCE. (d) WHEN RINGS ARE USED IN GROOVES, THE MINIMUM DISTANCE BETWEEN OUTER GROOVE WALL Z SHALL BE = TABLE VI. OUTER GROOVE WALLS. NOMINAL RING SIZE Z (MIN) .250 TO .437 .500 .625 .750 .030 .040 .045 .050 (e) DIFFERENTIAL ROTATION = DIFFERENTIAL ROTATION OF RING AND ADJACENT PART CREATES NO ELEMENT

27、 OF RISK IN THE APPLICATION OF THE RING. (f) IMPACT CAPACITY OF RING ON SHAFTS WITHOUT GROOVES IS MODERATE. IF RINGS ARE USED IN GROOVES, THE IMPACT CAPACITY INCREASES AND THE GROOVE WALL IS THE LIMITING FACTOR IN THE ASSEMBLY. IMPACT CAPACITY OF GROOVE WALL= IG= Pd 2 P = ALLOWABLE THRUST LOAD (POUN

28、DS) WHERE: d = GROOVE DEPTH (INCHES)IG= IMPACT CAPACITY OF GROOVE WALL (INCH POUNDS) 5 MS90707C Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(g) LOAD CAPACITY, WITH THE RETAINED PART RADIUSED OR CHAMFERED IS THE SAME AS THE LOAD CAPACITY OF RINGS

29、ABUTTING COMPONENTS WITH SHARP CORNERS AND IS SPECIFED IN TABLE VII BELOW. TABLE VII. LIMIT LOADS. 1/ NOMINAL RING SIZE ALLOWABLE THRUST LOAD FOR RING ASSEMBLIES WITHOUT GROOVE, RETAINED PART SHARP CORNERED RADIUSED OR CHAMFERED CARBON STEEL OR CORROSION RESISTANT STEEL BERYLLIUM COPPER .094 8 LB 6

30、LB .125 10 LB 8 LB .156 12 LB 9 LB .187 20 LB 15 LB .250 23 LB 17 LB .313 25 LB 19 LB .376 30 LB 23 LB .437 40 LB 30 LB .500 45 LB 32 LB .625 60 LB 45 LB .750 65 LB 47 LB 1/ LOAD VALUES ARE BASED UPON THE RING INSTALLED ON A SOFT LOW CARBON STEEL SHAFT. FOR HARDENED SHAFTS (50 HRC MIN) THE ALLOWABLE

31、 LOAD SHOULD BE REDUCED BY 50 PERCENT. 4. CHANGES FROM PREVIOUS ISSUE. MARGINAL NOTATIONS ARE NOT USED IN THIS REVISION TO IDENTIFY CHANGES WITH RESPECT TO THE PREVIOUS ISSUE DUE TO THE EXTENT OF THE CHANGES. MILITARY INTEREST Custodians: Preparing activity: Army - AR DLA - IS Navy - OS Air Force -

32、99 (Project 5325-2012-017) Review activities: Army AT, AV, GL, MI Air Force - 71 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. 6 MS90707C Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-