1、Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems Command, ATTN: SEA 05Q, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact
2、information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 3010 INCH-POUNDMIL-PRF-32232 15 November 2006 PERFORMANCE SPECIFICATION UNIVERSAL JOINT, RIGHT ANGLE, OFFSET, SHIPBOARD USE This specifi
3、cation is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This performance specification covers Right Angle Offset (RAO) universal joints designed to transmit up to 18,000 inch-pounds of torque between misaligned and/or offset shafts. RAO universal
4、joints are double universal joints and can accommodate compound angles up to 90 degrees (45 degrees per joint in any direction) replacing pin-and-cube universal joints and gear boxes in remote operator arrangements installed on Navy surface ships and submarines. 1.2 Classification. 1.2.1 Types. RAO
5、universal joints are of the following types (see Figure 1): Type I - Two solid male end connectors Type II - Two female end connections with slots to accommodate expansion and contraction Type III - One solid male end and one female end connection Type IV - Two male diameters with external keyways T
6、ype V - Customer-defined end connection (see 3.4) 1.2.2 Sizes. RAO universal joint sizes will accommodate rigid input/output shafts with the following diameters: Size (inches) Size (inches) 1 1 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PR
7、F-32232 FIGURE 1. RAO universal joint end connections. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32232 1.3 Part or identifying number (PIN). PINs to be used for RAO universal joints acquired to this specification are created as follow
8、s: M 32232 - X X Prefix for Military Specification Specification Number Type (see code below) Size (see code below) Type Type PIN Code Size (Inches) Size PIN Code Size (Inches) Size PIN Code I 1 A 1 F II 2 B 1 G III 3 C 1 H IV 4 D V 5 E Example: PIN M32232-1A is a Type I, -inch RAO universal joint.
9、2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has
10、 been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. T
11、he following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-167-1 - Mechanical Vibrations of Shipb
12、oard Equipment (Type I Environmental and Type II Internally Excited) MIL-S-901 - Shock Tests, H.I. (High Impact) Shipboard Machinery, Equipment and Systems, Requirements for 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publicat
13、ions form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. PUBLICATIONS NAVAL SEA SYSTEMS COMMAND T9074-AS-GIB-010/271 - Requirements for Nondestructive Testing Methods (Copies of this d
14、ocument are available from the Naval Logistics Library, 5450 Carlisle Pike, Mechanicsburg, PA 17055 or online at http:/nll.ahf.nmci.navy.mil.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32232 2.3 Non-Government publications. The follow
15、ing documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM A106/A106M - Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Servic
16、e (DoD adopted) ASTM B117 - Standard Test Method for Salt Spray (Fog) Testing (DoD adopted) ASTM D512 - Standard Test Methods for Chloride Ion in Water (DoD adopted) ASTM D1141 - Specification for Substitute Ocean Water (DoD adopted) ASTM D1179 - Standard Test Methods for Fluoride Ion in Water (DoD
17、adopted) ASTM D1246 - Standard Test Method for Bromide Ion in Water (DoD adopted) ASTM D3223 - Standard Test Method for Total Mercury in Water (DoD adopted) ASTM D3557 - Standard Test Methods for Cadmium in Water ASTM D3559 - Standard Test Methods for Lead in Water (DoD adopted) ASTM D4190 - Standar
18、d Test Method for Elements in Water by Direct-Current Argon Plasma Atomic Emission Spectroscopy ASTM D4327 - Standard Test Method for Anions in Water by Chemically Suppressed Ion Chromatography (Copies of these documents are available from ASTM International, 100 Barr Harbor Drive, West Conshohocken
19、, PA 19428-2959 or www.astm.org.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exempti
20、on has been obtained. 3. REQUIREMENTS 3.1 Qualification. RAO universal joints furnished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.2 and 6.3). 3.2 Materials. All componen
21、ts except bearings shall be made from passivated corrosion-resistant materials suitable for shipboard use and capable of meeting the required performance parameters specified herein. All materials shall be resistant to nitric acid. Materials selected shall maximize galvanic compatibility when instal
22、led in contact or close physical proximity to carbon steel, corrosion resisting steel, bronze, or copper-nickel alloys. 3.2.1 Detrimental materials. Detrimental materials shall not exceed the maximum concentrations as specified in Table I (see 4.5.10). 4 Provided by IHSNot for ResaleNo reproduction
23、or networking permitted without license from IHS-,-,-MIL-PRF-32232 TABLE I. Detrimental materials. Material Maximum concentration permitted (ppm) 1/ Asbestos None permitted Halogens (total of chloride, fluoride and bromide) 2/ 1,000 Lead 250 Cadmium plating None permitted Mercury and compounds (none
24、 intentionally added) 3/ 10 Sulfur 10,000 NOTES: 1/ ASTM Standards D512, D1141, D1179, D1246, and D4327 shall be used to ensure that the detrimental materials do not exceed the maximum permissible concentrations specified in Table I. 2/ Materials containing more than 1,000 parts per million (ppm) to
25、tal halogens are acceptable provided only fluorine exceeds 250 ppm and total leachable halides do not exceed 250 ppm. 3/ During manufacture, fabrication, handling, packaging, and packing, RAO universal joint materials shall not come in contact with mercury or mercury compounds. 3.2.2 Recycled, recov
26、ered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs
27、. 3.3 Service life. RAO universal joints shall be designed for a minimum service life of 30 years and shall meet the endurance requirements of 3.6.7. 3.4 Design and construction. RAO universal joint design and construction may vary from types listed in 1.2.1 provided that the requirements of this do
28、cument are met. TABLE II. Axial and tensile loads. Torque rating (in-lb) Torsional play (each joint) Nominal size (inches) Operating Breakdown Endurance torque (in-lb) Torque (in-lb) Limit (degrees) 500 1500 250 4 0.625 500 1500 250 4 0.625 2000 5000 1000 8 0.625 1 2000 5000 1000 8 0.625 1 3600 8750
29、 1800 8 0.500 1 18000 40000 9000 8 0.375 3.4.1 Angularity. RAO universal joints shall be capable of smooth near constant speed operation at angles up to 90 degrees, measured between the axes of the hubs (45 degrees per joint) (see Figure 2). 5 Provided by IHSNot for ResaleNo reproduction or networki
30、ng permitted without license from IHS-,-,-MIL-PRF-32232 FIGURE 2. RAO angles. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32232 3.4.2 Lubrication. RAO universal joints shall utilize self-lubricating, dry bearings. RAO universal joints s
31、hall operate without added lubrication and shall not require lubrication covers or boots. 3.5 Physical requirements. 3.5.1 Surface roughness. RAO universal joint nonworking surfaces shall have a 250 micro-inch finish or better. RAO universal joint bearing surfaces shall have 32 micro-inch finish or
32、better. 3.5.2 Marking. RAO universal joint marking requirements, if any, shall be as specified (see 6.2). 3.6 Performance requirements. 3.6.1 Operating environment. RAO universal joints shall perform in ambient temperatures ranging from -148 to 450 F. 3.6.2 Salt spray. RAO universal joints shall wit
33、hstand exposure to a salt spray marine environment when tested as specified in 4.5.2. 3.6.3 Torsional play. Torsional play shall not exceed the limit of Table II when the joint is subjected to the torque shown in Table II when tested as specified in 4.5.3. 3.6.4 Side play. The side play in RAO unive
34、rsal joints shall not exceed 0.015 inch when tested as specified in 4.5.4. 3.6.5 Tightness. The moment of force required to move each joint of the RAO universal joint through the angle of 45 degrees shall not exceed 5.0 inch-pounds when subjected to the tightness test of 4.5.5. 3.6.6 Static torque.
35、RAO universal joints shall withstand 100 percent of the operating torque loads shown in Table II without failure and must operate smoothly afterwards. 3.6.7 Endurance. At an angle of at least 22.5 degrees, RAO universal joints shall withstand continuous operation at 120 rpm for 12 hours under the en
36、durance torque loads shown in Table II when configured as shown in Figure 2. 3.6.8 Shock resistance. RAO universal joints shall withstand Grade A, Class I, Type A shock test requirements of MIL-S-901. 3.6.9 Vibration resistance. RAO universal joints shall meet Type I requirements of MIL-STD-167-1. 3
37、.7 Workmanship. Each RAO universal joint shall be uniform in quality and temper and shall be free from burrs, slivers, gouges, porosity, cracks or any other defects that may adversely affect serviceability. Since RAO universal joint components could be manufactured from castings, their surfaces may
38、contain such defects. Parts made from castings shall be tested in accordance with T9074-AS-GIB-010/271 to verify that any defects will not adversely affect serviceability. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. Qu
39、alification inspection (see 4.2). b. Conformance inspection (see 4.3). 4.2 Qualification inspection. Qualification inspection shall be performed on one RAO universal joint of each size: -, -, 1- and 1-inch. This inspection shall include the examination of 4.4 and the tests of 4.5.2 through 4.5.10. Q
40、ualification by similarity and analysis for similarly constructed and successfully qualified items is acceptable. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32232 4.2.1 Notification of test failure. If during the performance of any por
41、tion of the qualification testing, any operating parameter or measurement is out of specification, or any abnormality is noted, the test shall stop, the reason and failure mode shall be noted and the cognizant technical point of contact shall be notified of the failure. Testing shall not proceed unt
42、il the cognizant technical point of contact has evaluated the abnormality and given permission to resume testing. 4.3 Conformance inspection. Conformance inspection shall include the examination of 4.4. 4.4 Examination. Each RAO universal joint shall be examined for compliance with the requirements
43、specified in 3.2 through 3.5. Any redesign or modification of the contractors standard product to comply with specified requirements, or any necessary redesign or modification following failure to meet the specified requirements shall receive particular attention for adequacy and suitability. This e
44、lement of inspection shall encompass all visual examinations and dimensional measurements. Noncompliance with any specified requirements or presence of one or more defects preventing or lessening maximum performance shall constitute cause for rejection. TABLE III. Examinations and inspections. Test
45、requirement Requirement paragraph Verification paragraph Qualification Conformance Examination 3.2 through 3.5 4.4 X X Salt spray 3.6.2 4.5.2 X Torsional play 3.6.3 4.5.3 X Side play 3.6.4 4.5.4 X Tightness 3.6.5 4.5.5 Static torque 3.6.6 4.5.6 X Endurance 3.6.7 4.5.7 Shock resistance 3.6.8 4.5.8 X
46、Vibration resistance 3.6.9 4.5.9 X Detrimental materials 3.6.10 4.5.10 X 4.5 Methods of inspection. 4.5.1 Product certification. Material samples for RAO universal joints of each size (-, -, 1-, and 1-inch) shall be tested as applicable to 4.5.10. 4.5.2 Salt spray. RAO universal joints shall be subj
47、ected to a salt spray test in accordance with ASTM B117. No appreciable corrosion or other damage shall be evident after exposure to the salt spray and the RAO universal joint shall operate smoothly through its entire range of motion. Each axis of the RAO universal joint shall operate freely when mo
48、ved by hand through its full range of motion. In accordance with ASTM B117, the recommended exposure period, in increments of 24 hours, shall be mutually agreed upon by the manufacturer of the RAO universal joint and the procuring activity. 4.5.3 Torsional play. With one joint of the RAO fixed horiz
49、ontally at zero degrees, an initial reading shall be taken with the torque applied to the RAO universal joint as specified in Table II. The torque shall be reversed to obtain the second reading. The torsional play at the circumference of the joint is the angular difference between the two readings and shall not exceed the limits shown in Tab
