DLA MS3216 REV D-2011 RING RETAINING EXTERNAL PRONG-LOCK (REDUCED SECTION TYPE).pdf

1、AMSC N/A FSC 5325 MS3216D 25 October 2011 SUPERSEDING MS3216C 23 February 2004 DETAIL SPECIFICATION SHEET RING, RETAINING, EXTERNAL, PRONG-LOCK (REDUCED SECTION TYPE) This specification sheet is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acqui

2、ring the product described herein shall consist of this specification sheet and procurement specification MIL-R-21248. XMHCPTGZLL MAX = M MIN + X MAXL MIN = M MAX + X MINPLANE OF REFERENCE:RETAINING RING ORSOLID SHOULDER (TURNED)GROOVE BOTTOMRADII (MAX)SHAFT DIAMETER.094 TO .250 = .005.312 TO .438 =

3、 .010ENLARGED DETAILSWEBTable I. Dimensions. Shaft (Ref) P Free Gap B Overall Height E H Bow Height T 1/ Thickness G W Width C Clear-ance Inch mm Basic Tol Basic Tol (Ref) .010 Basic Tol Basic Tol +.005-.000 Inch .094 2.4 .063 .004 .307 .010 .166 .050 .010 .001 .061 .001 .003 FIM 2/ .035 .370 .125 3

4、.2 .086 .307 .166 .050 .010 .082 .0015 .003 FIM 2/ .035 .370 .156 4.0 .108 .330 .184 .055 .010 .104 .002 .004 FIM 2/ .040 .410 .188 4.8 .130 .005 .390 .213 .060 .015 .002 .124 .045 .480 .250 6.3 .172 .500 .280 .070 .015 .165 .055 .620 .312 7.9 .234 .620 .360 .095 .015 .228 .003 .005 FIM 2/ .080 .790

5、 .375 9.5 .280 .740 .427 .130 .020 .270 .095 .940 .438 11.1 .340 .010 .820 .020 .475 .130 .020 .327 .105 1.050 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 = (F

6、ull Indicator Movement) is the maximum allowable deviation of concentricity between the groove and the shaft. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS3216D 2 Table I. Dimensions. (continued) Shaft (Ref) X Distance from outer groo

7、ve wall to face of retained part Resilient take-up of tolerances of L and M Approx Average Resistance (lb) within X max and X min Approx force to flatten Rings of Rings of Carbon steel and CRES Beryl- lium copper Carbon steel and CRES Beryl- lium copper Carbon steel and CRES Beryl- lium copper Inch

8、mm Min Max X max X min As installed After plating lb lb .094 2.4 .030 .038 .008 9 6.5 3.5 2.5 30 20 .125 3.2 .030 .040 .010 8 5 3 2.5 30 20 .156 4.0 .035 .045 .010 8 5 4 2.5 30 20 .188 4.8 .039 .049 .010 20 13 5.5 4.5 60 40 .250 6.3 .045 .060 .015 15 10.5 7 5 60 40 .312 7.9 .070 .085 .015 6 5 4 3.5

9、60 40 .375 9.5 .080 .105 .025 19 14 7 5.5 80 50 .438 11.1 .095 .120 .025 12 9 6 5 60 40 REQUIREMENTS: 1. Classification: Retaining rings furnished under this standard shall be Type II, Class 4 of the procurement specification, MIL-R-21248. 2. Material: (a) Carbon spring steel, grade 1060 thru 1095 (

10、UNS G10600 thru G10950) in accordance with ASTM A684/A684M as applicable or A568/A568M. (b) Corrosion resistant steel in accordance with 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. Har

11、dness Shaft (Ref) Carbon Steel Corrosion Resistant Steel Beryllium Copper .094 to .250 incl 83.5-86HR15N .094 to .312 incl 82.5-86HR15N .094 to .438 incl 77-82HR15N .312 to .438 incl 65-69.5HR3ON .375 and .438 63-69.5HR3ON 4. Protective finish or surface treatment: (a) Carbon steel - shall be as spe

12、cified (see table III): (1) Cadmium plate in accordance with SAE-AMS-QQ-P-416, Type II, Class 3 or ASTM B696, Type II, Class 5 or zinc-nickel plate in accordance with AMS 2417, Type 2. (2) Zinc coat in accordance with ASTM B633, type II, class Fe/Zn5, or ASTM B695, Type II, Class 5. (3) Phosphate co

13、at 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. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS3216D 3 5. Part number: The basic MS par

14、t number is followed by a dash number taken from table III. Example: MS3216-1025 is the part number for a carbon steel cadmium plate, external, prong-lock, retaining ring for use on a .250 diameter shaft TABLE III. Dash numbers for MS3216 S Shaft (Ref) 1/ Carbon Steel Cadmium Plate or Zinc-Nickel 1/

15、 Carbon Steel Zinc-Coat 1/ Carbon Steel Phosphate Coat Steel Corrosion Resistant 1/ Beryllium Copper Dash No. Dash No. Dash No. Dash No. Dash No. .094 .125 .156 .188 .250 .312 .375 .438 -1009 -1012 -1015 -1018 -1025 -1031 -1037 -1043 -2009 -2012 -2015 -2018 -2025 -2031 -2037 -2043 -3009 -3012 -3015

16、-3018 -3025 -3031 -3037 -3043 -4009 -4012 -4015 -4018 -4025 -4031 -4037 -4043 -5009 -5012 -5015 -5018 -5025 -5031 -5037 -5043 1/ Substitute corrosion resistant steel when used in food processing machinery, or in fuel or lubrication systems, or when used at temperatures over 450 F (233 C). 6. Unless

17、otherwise specified, all dimensions are in inches. 7. In the event of a conflict between the text of this document and the references cited herein, the text of this document shall take precedence. 8. Unless otherwise specified, issues of referenced documents are those in effect at the time of solici

18、tation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS3216D 4 9. Recommended design limitations and usage. (a) Intended use - To provide large shoulders for positioning and maintaining machine parts. They are applied radially and are locked posit

19、ively in their groove by means of two prongs extending from the inner circumference to the open end. They withstand high thrust loads and relative rotation between the retained parts. Their bowed construction provides resilient end-play take-up in axial direction. They may be assembled and disassemb

20、led with a screwdriver or with the prong-lock applicator. Sizes .125 to .312 are available rod-stacked for high speed application. The use of the following formulas are based on the fact that the ring material will not fail in compression. Limitation on use - the following formulas are not to be use

21、d for brittle materials such as cast iron, etc. Warning - Rings shall not be over expanded during installation since this will lead to ring failure. (b) Allowable thrust load capacity of the rings. Abutting components to have sharp corners = P = Allowable thrust load (pounds). S = Shaft diameter (in

22、ches). P = Where: T = Ring thickness (inches). X = Ultimate shear strength of the ring material (psi). 1/ F = Factor of safety. A safety factor, F = 3, is recommended, since the ring after flattening under load is subjected not only to pure shear stresses but also to bending stresses. (c) Allowable

23、load capacity of groove wall = P = Allowable compression load (pounds) S = Shaft diameter (inches) P = 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 = 3, is recommended, since the

24、working stress in the groove section is raised considerably by the notch effect of the deep groove. (d) Minimum distance between outer groove wall and end of shaft = Z = Minimum distance between outer groove wall and end of Z = 2d Where: shaft (inches) d = Groove depth (inches) (e) Differential rota

25、tion = Differential rotation of ring and adjacent part creates no element of risk, because the ring is locked in its groove by two locking prongs. 1/ X = 130,000 psi ultimate shear strength for rings of carbon steel or corrosion resistant steel. X = 110,000 psi ultimate shear strength for rings of b

26、eryllium copper. STX 1.75 F SdY 2F Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS3216D 5 10. Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made

27、. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to

28、 the last previous issue. MILITARY INTEREST Custodians: Preparing activity: Army - AR DLA - IS Navy - OS Air Force 99 (Project 5325-2011-003) Review Activities: Army AT, CR4, MI Navy MC 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.daps.dla.mil Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-