1、. v .“ MIL-A-24533B 9999906 1852095 778 IINC“DI MIL-A-24533B(SH) 1 Avril 1993 SUPERSEDING 3 April 1979 (See 6.9) MIL-A-24533A(SH) MILITARY SPECIFICATION ACTUATORS, ROTARY, HYDRAULIC, RACK AND PINION This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and
2、is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for material, design, The fabrication, and testing of rack-and-pinion hydraulic rotary actuators for Naval shipboard use, primary application for the actu
3、ators is in remote operation of various ship systems components. The actuators convert hydraulic power to a rotational output. 1.2 Classification. Rotary actuators will be in accordance with the torque ranges, shaft rotation, and mounting configurations listed in the applicable specification sheets
4、or as specified (see 6.2). 1.2.1 Rotary actuator catepories. Rotary actuators furnished under this O specification are category I, II or III as defined in 1.2.1.1, 1.2.1.2 or 1.2.1.3, respectively (see 6.2). 1.2.1.1 Category I rotary actuators. Category I rotary actuators are rotary actuators which
5、are completely defined by a military specification sheet and part number and meet all the requirements specified herein. Category I rotary actuators ar.e preferred for use. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this docume
6、nt should be addressed to: Commander, Naval Sea Systems Command, SEA 05442, 2531 National Center Bldg.3, Washington, DC 20362-5160 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 3010 DISTRIBUTI
7、ON STATEMENT A. Approved for public release; distribution is unlimited. O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-24533B = 999990b i1852096 604 MIL-A-24533B(SH) 1.2.1.2 Category II rotary actuators. Category II rotary actuators are rota
8、ry actuators which are the same as category I rotary actuators, except for minor differences such as type of shaft, degrees of rotation, seal material or configuration, or minor dimensional variations which do not change the basic design or construction of the qualified actuator. are considered to b
9、e nonstandard (see 6.2) Category II rotary actuators 1.2.1.3 Category III rotary actuators. Category III actuators are rotary actuators whose configurations are not defined by specification sheets. All configuration requirements such as envelope, mounting, type of shaft, torque requirements, and ope
10、rating pressure must be specified in the ordering data (see 6.2). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards. and handbooks. The following specifi- cations, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise s
11、pecified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL GGG - P- 7 81 PPP - F- 320 PPP - B - 6 3 6 MILITARY MIL-P- 116 MIL-B-1
12、21 MIL-G-5514 MIL-H-6083 MIL-A-8625 MIL-S-8805 MIL-H-17672 MIL-L-19140 MIL-B-22191 MIL-P-24441 MIL-P-24441/1 MIL-P-24441/2 - Puller, Mechanical Puller Attachment, Mechanical, - Fiberboard: Corrugated and Solid, Sheet Stock - Boxes, Shipping, Fiberboard. and Puller Set, Mechanical. (Container Grade),
13、 and Cut Shapes. - Preservation, Methods of. - Barrier Material, Greaseproofed, Waterproofed, - Gland Design; Packings, Hydraulic, General Require- - Hydraulic Fluid, Petroleum Base, for Preservation - Anodic Coatings, for Aluminum and Aluminum Alloys. - Switches and Switch Assemblies, Sensitive and
14、 Push - Hydraulic Fluid, Petroleum, Inhibited. - Lumber and Plywood, Fire-Retardant Treated. - Barrier Materials, Transparent, Flexible, Heat - Paint, Epoxy-Polyamide, General Specification for. - Paint, Epoxy-Polyamide, Green Primer, Formula 150, - Paint, Epoxy-Polyamide, Exterior Topcoat, Haze Fle
15、xible. ments for. and Operation. (Snap Action), General Specification for. Sealable. Type I. Gray, Formula 151, Type I. Y. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-24533B 999990b LA52097 540 MILITARY (Continued) MIL-A-24533/1 - Actuato
16、r, Rotary, Hydraulic 2-Position, Rack-and- Pinion Type 3,000 to 35,000 Inch-Pounds Torque 2-Bolt Mounting. Pinion Type 5,000 to 92,000 Inch-Pounds Torque 4-Bolt Mounting. MIL-A-24533/2 - Actuator, Rotary, Hydraulic 2-Position, Rack-and- STANDARDS MILITARY MIL-STD-278 - Welding and Casting Standard.
17、MIL-STD-1186 - Cushioning, Anchoring, Bracing, Blocking, and Waterproofing; with Appropriate Test Methods. MIL-STD-1762 - Bearings and Bushings, Plain, Preferred for Design, Listing of. MIL-STD-2073-1 - DOD Material Procedures for Development And Appli- cation of Packaging Requirements. MIL-STD-2193
18、 - Hydraulic System Components, Ship. (Unless otherwise indicated, copies of federal and military specifications, standards, nd handbooks are available from the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The foll
19、owing documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODI
20、SS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN GEAR MANUFACTURERS ASSOCIATION (AGMA) 390.03 - Handbook, Gear Classification, Materials and Measuring Methods for Bevel, Hypoid, Fine Pitch Wormgearing and Racks Only as Unassembled Gears. (Application for copies should
21、 be addressed to the American Gear Manufacturers Association, 1500 King St., Suite 201, Alexandria, VA 22314.) AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) B46.1 - Surface Texture (Surface Roughness, Waviness, and Lay). (DoD adopted) (Application for copies should be addressed to the American Nation
22、al Standards Institute, Inc., 1430 Broadway, New York, NY 10018.) - AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 3951 - Standard Practice for Commercial Packaging. (DoD adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race St., Phila
23、delphia, PA 19103.) O 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-24533B 9999906 1852098 487 (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These do
24、cuments also may be available in or through libraries or other informational services.) 2.3 Order of Drecedence. In the event of a conflict between the text of this document and the references cited herein (except for related specification sheets), the text of this document takes precedence. Nothing
25、 in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 SDecification sheets. The individual rotary actuator requirements shall be as specified herein and in accordance with the applicable specification sheet. In the e
26、vent of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3.2 First article. When specified (see 6.2), a sample shall be subjected to the first article inspection (see 6.5) in accordance with 4.3. 3.3 Materials and fabrication. Material
27、s and fabrication shall be in accordance with MIL-STD-2193 and applicable specification sheets. Materials shall be compatible with the fluid, temperature,. service and performance requirements specified herein. 3.3.1 Materials for extremely corrosive environment. When designated by the applicable sp
28、ecification sheet or specified (see 6.2), rotary actuators for an extremely corrosive environment shall be designed with emphasis on avoiding destructive electrolysis. shall be avoided. complete submersion of the actuator in seawater, or exposure to conditions conducive for galvanic corrosion. Direc
29、t contact of electrolytically dissimilar metals Extremely corrosive environment shall be defined as partial or 3.3.2 Recovered .materials. Unless otherwise specified herein, all equip- ment, material, and articles incorporated in the products covered by this specification shall be new and may be fab
30、ricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered materials“ means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to
31、 virgin raw materials. None of the above shall be interpreted to mean that the use of used or rebuilt products is allowed under this specification. 3.4 Design. 3.4.1 Design pressure. The rotary actuator shall be designed to the operating pressure in the applicable specification sheet or as specified
32、 (see 6.2, 6.3, and appendix). Unless otherwise specified, the rotary actuators shall be designed for a rated operating pressure of 20.7 megapascal (MPa) (3,000 pounds per square inch (ib/in2) gauge) and shall provide the minimum specified ouput torque at a differential pressure which is two-thirds
33、the rated operating pressure. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-24533B 77777b 1852077 313 3.4.1.1 Proof pressure. The actuator shall withstand a proof pressure of 1.5 times the design pressure without permanent deformation or ex
34、ternal leakage sufficient to form a drop. O 3.4.2 ComDatibilitv. Unless otherwise specified (see 6.2), rotary actuators shall be compatible with the fluids identified in the compatibility requirements of MIL-STD-2193. 3.4.3 Envelope. Dimensions shall be within the envelope requirements of the applic
35、able specification sheet or as specified (see 6.2). 3.4.4 Orientation. Actuators shall operate in any orientation or position. Actuator mounting bolt and dowel pin patterns shall meet the requirements of the applicable specification sheets. 3.4.5 Rotation. The shaft rotating angle and its tolerance
36、shall be in accordance with the applicable specification sheet or as specified (see 6.2). 3.4.6 Operatinp cvcles. The rotary actuator shall be designed to achieve a minimum operating life of 50,000 cycles unless otherwise specified (see 6.2). For two-position actuators, a cycle shall be defined as t
37、he shaft rotating from one extreme position to the other and return. cycle shall be defined as the shaft rotating from the neutral position to one extreme position and back to neutral, followed by rotation to the other extreme position and return to neutral. 3.4.7 OutDut torque. For three-position a
38、ctuators, a Minimum and maximum output torques of the actuator at the specified pressures shall be as established in the applicable specification sheet. The minimum torque required shall be obtained at a differential pressure not more than two-thirds the rated operating pressure. developed at a diff
39、erential pressure equal to the rated operating pressure shall not exceed the minimum output torque specified by more than 175 percent. O The maximum torque 3.4.8 Breakawav Dressure. Differential pressure required to start motion of the shaft in either direction under no-load conditions shall not exc
40、eed 100 pounds per square inch (lb/in2). being held in/ither extreme position for at least 1 minute at the design pressure. I Actuators shall comply with this requirement after 3.4.9 Dashpots. When specified in the applicable specification sheet, dashpots shall be designed to decelerate the motion o
41、f the piston near the end of the stroke. last 15 degrees of rotation, while meeting any applicable noise requirements. The dashpot shall be adjustable and operate over approximately the 3.4.10 Leakape. Actuator internal leakage shall not exceed the levels specified in the applicable specification sh
42、eet under the operating and test conditions specified herein. External leakage shall be insufficient to form a drop under the same conditions. 3.4.11 Seals. Seals, seal glands, and back-up rings shall be in accordance with MIL-STD-2193. O Provided by IHSNot for ResaleNo reproduction or networking pe
43、rmitted without license from IHS-,-,-MIL-A-24533B m 9999906 L52LOO 9b5 m MIL-A-24533B(SH) 3.4.12 Noise, The actuators shall not exceed the allowable structureborne noise limits specified (see 6.2). 3.5 Construction . 3.5.1 Actuator bodies. Unless otherwise Specified herein, actuator bodies shall com
44、ply with the general construction requirements of MIL-STD-2193. 3.5.2 Aluminum bodies. Actuators with an output greater than 136 newton meter (N*m)(1,200 inch-pound in-lb) at rated operating pressure that utilize aluminum as the body material shall be furnished with a corrosion-resistant replaceable
45、 sleeve to separate the piston from the aluminum body to prevent galling, corrosion, seizing, or excessive wear of the aluminum body. Exterior surfaces of actuator aluminum bodies shall be anodized in accordance with MIL-A 8625 and painted as specified in 3.7.3. 3.5.3 Welding and brazing. actuator p
46、arts subject to hydraulic pressure. accordance with MIL-STD-278, class M. Brazing shall not be used in fabrication of Welding requirements shall be in 3.5.4 Chamfers. Methods of undercutting and chamfering for seal lead-in shall be in accordance with MIL-G-5514. 3.5.5 Internal porting. Transfer of h
47、ydraulic fluids across the actuator shall be by internal porting within the actuator. 3.5.6 Relief ports and relief valves. Unless otherwise specified (see 6.2), rotary actuators that require a sealed, fluid-filled gear chamber shall be equipped with a relief valve or other pressure-limiting device.
48、 requirements of the relief valve shall be in accordance with the applicable specification sheet or as specified (see 6.2). The operating 3.5.7 Actuator ports. Actuator ports shall be in accordance with the applicable specification sheet or as specified (see 6.2). such as NPT are not permitted. Tape
49、red pipe threads 3.5.8 Fasteners. Fasteners shall be in accordance with the requirements of MIL-STD-2193. 3.5.9 Shaft. Actuator shaft shall be as specified in the applicable specification sheet. II actuators provided it does not change the shaft bearing size or mounting configuration of the qualified actuator. Deviation from the specified shaft is permitted for category 3.5.10 Bearings. Antifriction or journal bearings shall be selected from the preferred-for-design series listed in
