1、, L. MIL-C-17944A 39 m 9799906 0503289 7 m IINCH-POUND MIL-C-l7944A(SH) 27 Januarv 1992 SUPERSEDING 30 April 1954 (See 6.8) MIL-C-l7944(SHIPS) MILITARY SPECIFICATION CAPSTANS, ELECTRIC (FOR SHIPBOARD USE) This specification is approved for use by the Naval Sea Systems Command, Department of the Navy
2、, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers electric capstans for use on Naval ships. 1.2 Classification. Capstans are of the following classes, as specified (see 6.2) : Class 1. Class 2. Class 3. Capstan head
3、, gear reduction, and motor mounted on weather Capstan head mounted on weather deck with motor and gear Capstan head mounted on weather deck with motor and gear reduction mounted on deck below. reduction mounted below deck in underhung position. deck. Beneficial comments (recommendations, additions,
4、 deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department: of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appear
5、ing at the end of this document or by letter. AMSC N/A FSC 3950 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-17944A 39 W 999990b 0501270 3 W c MIL-C-l7944A(SH)
6、 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. those listed in the issue of the Department of Defense Index of Specifications and
7、Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). Unless otherwise specified, the issues of these documents are SPECIFICATIONS FEDERAL FF-B-171 FF-B-185 FF-B-187 FF- S - 85 FF- S - 86 FF- S - 92 FF- S - 107 FF- S - 200 FF- S - 210 HH-L-361 QQ - C - 3 90 TT - E - 490 TT-
8、E- 781 PPP - F- 320 MILITARY MIL-S-1222 MIL-C-2212 MIL-M-3184 MIL-F-3541 MIL-P-15024 - Bearings, Ball, Annular (General Purpose). - Bearings, Roller, Cylindrical; and Bearings, Roller, Self-Aligning. - Bearing, Roller, Tapered. - Screw, Cap, Slotted and Hexagon Head. - Screw, Cap, Socket-Head. - Scr
9、ew, Machine: Slotted, Cross-Recessed or Hexagon - Screws, Tapping and Drive. - Setscrews: Hexagon Socket and Spline Socket, - Setscrews: Square Head (Inch) and Slotted Headless - Lining, Brake; and Lining Material, Brake: - Copper Alloy Castings (Including Cast Bar). - Enamel, Silicone Alkyd Copolym
10、er, Semigloss (.For Exterior and Interior Non-Residential Use). - Ethylene Glycol Monoethyl Ether, Technical. - Fiberboard: Corrugated and Solid, Sheet Stock Head. Headless. (Inch and Metric). Automotive. (Container Grade), and Cut Shapes. - Studs, Bolts, Hex Cap Screws, Socket Head Cap - Contactors
11、 and Controllers, Electric Motor A.C. or - Machinery: Screws and Nuts. D.C., and Associated Switching Devices. Associated Equipment and Provisioned (Repair Parts) Items; Packaging of. - Fittings, Lubrication, General Specification for. - Plates, Tags and Bands for Identification of Deck and Vehicle
12、Mounted with Equipment. MIL-P-15024/5 - Plates, Identification. MIL-B-16392 - Brakes, Magnet, Naval Shipboard. MIL-M-17060 - Motors, 60-Hertz, Alternating Current, Integral - Horsepower, Shipboard Use. MIL-M-17413 - Motors, Direct Current, Integral H.P., Naval Shipboard, MIL-L-1914U - Lumber and Ply
13、wood, Fire-Retardant Treated. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-17944A 39 7999906 0501291 5 W MILITARY (Continued) MIL-S-22698 - MIL- P- 24441 - MIL-P-24441/1 - MIL-P-24441/3 - MIL-C-24707 - MIL-C-24707/1 - MIL-C-24707/5 - STAND
14、ARDS FEDERAL FED-STD-H28 - FED-STD-595 - MILITARY MIL-STD-130 - MIL-STD-278 - Steel Plate, Shapes and Bars, Weldable Ordinary Paint, Epoxy-Polyamide General Specification for. Paint, Epoxy-Polyamide, Green Primer, Formula 150, Paint, Epoxy-Polyamide, Topcoat, White, Formula Castings, Ferrous, Genera
15、l Specification for. Castings, Ferrous for Machinery and Structural Castings, Ductile Iron and Austenitic Ductile Iron. Strength and Higher Strength: Structural. Type I. 152, Type I. Applications. Screw-Thread Standards for Federal Services. Colors Used in Government Procurement. Identification Mark
16、ing of U.S. Military Property. Welding and Casting Standard. (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Gover
17、nment documents. drawings. and Dublications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. are those cited in the solicitation. Unless otherwise specified, the issues DRAWINGS NAVAL SEA SYSTEMS COMMAND (NAVSEA) 805-8
18、60303 - Capstan and Gypsy Head, Tabulation of Sizes. (Application for copies should be addressed to: Commander, Portsmouth Naval Shipyard, Code 202.2, Portsmouth, NH 03801.) PUBLICATIONS NAVAL SEA SYSTEMS COMMAND (NAVSEA) S9086-VD-STM-000 - Chapter 631: Preservation of Ships in Service (Surface Prep
19、aration and Painting). (Application for copies should be addressed to the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) e 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-37944A 39 = 9999906
20、0503292 7 . O 2.2 Non-Government publications. The following document(s) 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
21、specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN GEAR MANUFACTURERS ASSOCIATION (AGMA) Standards. (Application for copies should be addressed to the American Gear Manufacturers Association, 1500 King Street, Sui
22、te 201, Alexandria, VA 22314.) AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) B 46.1 - Surface Texture (Surface Roughness, Waviness, and Lay). (DoD adopted) (Application for copies should be addressed to the American National Standards Institute, 1430 Broadway, New York, NY 10018.) AMERICAN SOCIETY FO
23、R TESTING AND MATERIALS (ASTM) A 27 - Standard Specification for Steel Castings, Carbon, for A 131 - Standard Specification for Structural Steel for Ships. A 148 - Standard Specification for Steel Castings, High Strength, for Structural Purposes. (DoD adopted). A 668 - Standard Specification for Ste
24、el Forgings, Carbon and Alloy, for General Industrial Use. (DoD adopted). D 1640 - Standard Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room Temperature. General Application. (DoD adopted). - (DoD adopted) (Application for copies should be addressed to the American Soci
25、ety for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) STEEL STRUCTURES PAINTING COUNCIL (SSPC) SP 5 - Surface Preparation Specification No, 5 - White Metal Blasting Cleaning, (DoD adopted) (Application for copies should be addressed to the Steel Structures Painting Council, 4400
26、Fifth Avenue, Pittsburgh, PA 15213.) (Non-Government standards and other publications are normally available from These documents also the organizations that prepare or distribute the documents. may be available in or through libraries or other informational services.) 2.3 Order of Drecedence. In th
27、e 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 exemption has been obtained. 4 Provided by IHSNot for ResaleNo reproduc
28、tion or networking permitted without license from IHS-,-,-MIL-C-L944A 39 999990b 0503293 9 I MIL-C-l7944A(SH) 3. REQUIREMENTS 3.1 Material. Material shall conform to the following requirements as O app 1 icab le : (a) (b) Cast steel shall be in accordance with MIL-C-24707, MIL-C-24707/1, (c) Structu
29、ral steel components shall be in accordance with (d) (e) Forged steel shall be in accordance with ASTM A 668, grade D. ASTM A 27, or ASTM A 148. MIL-S-22698, Grade DH36 or ASTM A 131. shall not be used for fabrication of the capstan head. 865 or 923. Cast iron shall be in accordance with MIL-C-24707
30、/5. Copper alloy castings shall be in accordance with QQ-C-390, alloy Cast iron 3.1.2 Recovered materials. Unless otherwise specified herein, all equipment, material, and articles incorporated in the products covered by this Specification shall be new and may be fabricated using materials produced f
31、rom 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 virgin raw materials. None of the
32、 above shall be interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specified. 3.2 Construction. Each capstan shall consist of a capstan head, shaft, gear reduction, electric motor, controller, electric brake, and al1 operati
33、ng accessories necessary for operation independent of anything except power leads 0 (see 6.3). 3.2.1 Camtan arrangements. The capstan arrangement shall be of the class Unless otherwise specified (see 1.2). lines at all working angles to be handled by the capstan head. specified, pawls will not be re
34、quired (see 6.2). shall be such as to eliminate hazards of exposed parts becoming inoperative due to frequent soaking by salt spray and extreme atmospheric conditions occurring on the weather deck of the vessel. Where capstan shafts pass through a deck, provision shall be made to obtain thorough wat
35、ertightness. joints shall be provided as necessary to compensate for deck deflections. It shall provide for clear leads of mooring and warping Construction of the capstan Flexible couplings or slip 3.2.2 Welding. Welded fabrication properly made and stress relieved is acceptable in lieu of castings.
36、 Fabrication, welding, and inspection shall be in accordance with MIL-STD-278. 3.2.3 Weight. The unit shall be as compact and light as is consistent with Full use shall be made of welded construction to adequate strength and rigidity. obtain lightest weight. 3.2.4 Fasteners. Positive means shall be
37、provided for securing keys, feathers, splines, nuts, screws, and collars to prevent their working loose, The use of setscrews shall be avoided. When setscrews are used, they shall have positive locking devices to prevent their working out. Fasteners shall be in 5 Provided by IHSNot for ResaleNo repr
38、oduction or networking permitted without license from IHS-,-,-accordance with MIL-S-1222, FF-S-85, FF-S-86, FF-S-92, FF-S-107, FF-S-200, or FF-S-210. Fasteners with a nominal diameter of 1/2 inch or less, and exposed with the unit in operating position, shall be of stainless steel material. Screw th
39、reads shall be unified, coarse or fine thread series in accordance with FED-STD-H28. Use of fasteners conforming to ANSI standards is permitted. 3.2.5 Capstan head. The capstan head shall be proportioned as shown on Drawing 805-860303 in accordance with the capstan head and rope size specified (see
40、6.2). The wearing surface shall be hardened to a minimum of 350 Brinell. Finished surface of the capstan head in contact with rope shall have surface roughness of 125 microinches or less. ANSI B46.1. Surface roughness shall be as defined in 3.2.6 Gearine;. Gearing shall be in accordance with AGMA st
41、andards, shall have machine cut teeth, and shall be provided with rugged and ample guards for the protection of personnel and the gears. Gears shall be totally enclosed in an oil- tight case and shall be lubricated by an oil bath. Oil fill, drain, and vent fitting shall be provided. tight covered op
42、enings in sufficient number to allow visual examination of the teeth on all gears. Such openings shall expose to view at least two gear teeth at a time. The opening shall permit viewing the mesh between gears, if practical. A dipstick, sightglass or plug shall be provided for indicating the oil leve
43、l. Dipsticks shall be marked to indicate “full“ and “add oil“. Housings containing gears shall be provided with oil- 3.2.7 Bearinas. Anti-friction bearings, in accordance with FF-B-171, FF-B-185, or FF-B-187, as applicable, shall be used throughout, if practicable, and where not practicable, bronze
44、bushings shall be used. are used, positive means shall be provided to prevent the bushing from turning and cutting off the supply of lubricant. oil bath, shall be fitted with pressure type grease fittings in accordance with Where bronze bushings Each bearing, except those lubricated by an -type I, I
45、II, IV of MIL-F-3541. 3.2.8 Bedplates. The bedplates shall be of adequate strength to maintain alignment without aid from the deck foundations. in general not exceed 15 times the bolt diameter, and the thickness of the flange at these bolt holes shall be at least equal to the diameter of the bolt us
46、ed. Foundation bolt holes shall be drilled 1/16 inch small for reaming out at installation to fit body bound bolts. in which water can stand or collect. The hold-down bolt spacing shall The configuration shall eliminate pockets 3.2.9 Accessibilitv. Capstan shafts, gears, bearings, and head shall be
47、constructed to permit inspection, adjustment, or removal without dismantling the entire unit. 3.2.10 Motors. Motors and motor characteristics shall be in accordance with MIL-M-17060 or MIL-M-17413 as specified (see 6.2). One hundred percent of the motor load rating shall not be exceeded under the ca
48、pstan rated load and speed. Unless otherwise specified (see 6.2), alternating current (ac) electric capstans shall be powered by two-speed alternating current motors rated at full and one- half speeds and constant horsepower. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
49、hout license from IHS-,-,-3.2.11 Motor controllers. Controllers and master switches shall be in accordance with MIL-C-2212 as specified (see 6.2). be provided in the control. Master switches shall be spring return to “off“ and shall be deck mounted as near as practicable to the capstan they control without jeopardizing the safety of the operator from synthetic line snapbacks. current capstans, the control shall provide at least three speeds in both directions
