1、MIL-M-70806 bL W 9979906 044323b 2 W 4 September 1990 SUPERSEDING 7 December 1978 M60PD-M-62213 (AT) MILITARY SPECIFICATION MOTOR ASSEMBLY This specification is approved for use by the Department of the Army and is available for use by all Departments and Agencies of the Department of Defense. 1. SC
2、OPE 1.1 Scope. direct current electric motor assembly used in the M60A1 series tank. The motor assembly is a varying speed, 27.5 volt direct current (vdc), 20 horsepower (hp), series or compound wound, intermittent duty unit. This specification includes the minimum essential Engineering and Packagin
3、g Requirements and the necessary Qual i ty Assurance Provisions to determine that these requirements have been met. This specification supports the acquisition of the turret drive 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The fol lowing specifications and
4、standards form a part of this specification to the extent specified herein. otherwise specified, the issues of these documents shall be 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). U
5、nless Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Armament Research, Development and Engineering Center, US Army Armament, Munitions and Chemical Command, ATTN: SMCAR-CCB-SAS, Wat
6、ervliet, N.Y. 12189-4050 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 6105 DISTRIBUTION STATEMENT A. Approved for pub1 ic release; distribution is un1 imited. Provided by IHSNot for ResaleNo
7、reproduction or networking permitted without license from IHS-,-,- MIL-M-70806 bL m 7797706 0443237 4 m MIL -M-70806 (AR) SPEC IF iCAT IONS Mi 1 i tary MIL-H-46170 - Hydraulic Fluid, Rust-Inhibited, Fire-Resistant, Synthetic MIL-P-14232 - Parts, Equipment and Tools for Army Material, Packaging and M
8、IL-S-45743 - Soldering, Manual Type, High Reliability Electrical and Hydrocarbon Base Packing of .Electronic Equipment STANDARDS Mi 1 i tary DOD-STD-100 - Engineering Drawing Practices MIL-STD-105 MIL-STD-129 - Sampling Procedures for Tables for Inspection by Attributes - Marking for Shipment and St
9、orage MIL-STD-130 - Identification Marking of US Military Property MIL-STD-193 - Painting Procedures and Marking for Vehicles MIL-STD-202 - Test Methods for Electrical and Electronic Component Parts MIL-STD-454 - Electronic Equipment, Standard General Requirements for MIL-STD-461 MIL-STD-462 MIL-STD
10、-810 - Environmental Test Methods and Engineering Guidelines MIL-STD-889 . - Dissimilar Metal s MIL-STD-1275 - Electrical Circuit, 28 Volt DC Transient Characteristics for Mil i tary Vehicles MIL-STD-45662 - Cal i bration System Requirements - Electromagnet- + 0.5/-0.0 seconds ON, 2.5 tO.5/-0.0 seco
11、nds OFF,an oil temperature of 205 - + 5F and a load as specified in 3.2.2.3.3. 3.2.2 Physical characteristics. 3.2.2.1 Weight. The motor assembly shall have a maximum weight of 100 lbs. 3.2.2.2 Enclosure. The motor assembly shall be a watertight fan-cooled enclosure as described herein and depicted
12、on Drawing 11668642. 3.2.2.3 Endurance. 3.2.2.3.1 Ra id cyclin . With an input voltage of 25.5 t 0.5 vdc, a load as specified in -he 3 an oil temperature of 205 t 5“F, and an air flow over brushes as shown on Drawing 10959033 applied, the motor shall show no evidence of performance degradation per 3
13、.2.1 after 5,000 cycles of operation (2,500 cycles at ambient temperature, then 2,500 cycles at 125 t 5F) with a duty cycle of: +O. 5/-O. O seconds ON , 2.5 to. 5/-O. O seconds OFF. 2.5 3.2.2.3.2 Normal cycling. With an input voltage of 25.5 + 0.5 vdc, a load as specified in 3.2.2.3.3, an oil temper
14、ature of 180 + 1O“F, and an airflow over brushes as shown on Drawing 10959033 applied, the Kotor shall have no need for servicing or replacement of parts during 225,000 cycles of operation at a duty cycle of: performance change from pre-enduranceperformance per 3.2.1 shall not exceed 7.5%. 2.5 t 0.5
15、 seconds ON, 5.5 t 0.5 seconds OFF. Post endurance Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-7080b bl 77777Ob Oq1-13243 b MIL-M-70806( AR) AMPERES 3800 4000 42200 4400 4600 4800 5000 RPM (Mu. 1 FIGURE 1. Load limit at 6.5 lb-ft 6 Provided
16、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-70Ob bl W 777770b 0443242 W MIL-M-70806 ( AR) 400 390 AMPERES 380 370 360 350 3100 3200 3300 MOO SSOO 3600 3700 8800 3850 W) RPM la) FIGURE 2, Load limit at 15.4 lb-ft 7 Provided by IHSNot for ResaleNo re
17、production or networking permitted without license from IHS-,-,-1W 90 80 ?O 60 50 40 JO 20 10 - ,200 1 O0 ,000 SOO 800 7oi) (i00 300 400 300 200 100 - MIL-M-70806 61 m 7777706 0443243 T m MIL-M-70806 ( AR) I I i 8 8 I I I I I I o. 2.5 1.0 6.5 7.5 10.0 12.5 15-4 l?A 20.0 Towe fi) FIGURE 3, Characteri
18、stic curves 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-70806 (AR) 3.2.2.3.3 Load. 3.2.2.3.1, and3.2.2.3.2 is shown schematically in FIGURE 4 and represents a hydraulic pump with an inertia of 5.0 - + 0.15 X 3,2.3 Overhaul. The Mean Time
19、to Overhaul (MTO) of the motor assembly shall not exceed 4 hours, Overhaul shall consist of disassembly, rep1 acement of brushes, bearings, and seals, and functional test. Motor assembly load for requirements as stated in 3.2.1.13, ft-lb-sec2. 3.2.4 Environmental conditions. 3.2.4.1 Temperature. The
20、 motor assembly shall meet the performance requirements specified herein at temperatures ranging from -25F to 125F and shall not be damaged by storage conditions ranging from -65“ to 160F. at temperature extremes shall not exceed 7.5%. 3.2.4.2 Vibration. The motor assembly shall be capable of withst
21、anding the - vibration profile per FIGURE 6 for period of 80 minutes (including up to 4 resonance dwells of 13-1/3 minutes each) in each of the 3 mutually perpendicular axis, X, Y and Z, as shown in FIGURE 5. Performance degradation 3.2.4.3 Shock (nonoperating). The motor assembly shall be capable o
22、f withstanding exposure to three half sine wave shock pulses of 40 t 4 gravity unit (9) peak for a duration of 18 2 3 milliseconds applied in both directions along the three mutually perpendicular axes X, Y and Z, as shown in FIGURE 5. 3.2.4.4 Humidity. The motor assembly shall meet the requirements
23、 specified herein during and after exposure to humidity conditions up to 99% R.H. 3.2.4.5 Corrosion. The assembly shall be capable of operating as specified herein after exposure to a 5% sodium chloride atomized spray for 48 hours minimum. 3.2.4.6 Fungistatic materials. All non-metallic materials sh
24、all be inherently fungistatic or treated to resist fungus growth except when used for components of potted or otherwise moi sture sealed assembl ies. 3.2.4.7 Water roofness The motor assembly shall be capable of withstanding 6 psig whil-*clear water at ambient temperature for two (2) minutes without
25、 evidence of leakage. electrical connector capped and the uppermost surface of themotor a minimum of one inch below the surface of the water. during immersion, The motor assembly shall be submerged with the Motor shall not be electrically operated 3.2.4.8 Transient vol tage. The motor shall meet req
26、uirements during exposure to vol tage as specified in MIL-STD-1275 (see 4.4.4.4.9). 3.3 Design and construction. 3.3.1 Materials, processes, and parts. Exposed functional parts shall be fabricated from sui table corrosion resistant material or treated to prevent corrosion. Exposed nonfunctional part
27、s shall be painted white conforming to MIL-STD-193. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-tlIL-tl-7080b 61 m 9777706 0443245 3 MIL-M-70806( AR) O?IW WEN I mmcn on“ 10 FIGURE 4A. Typical Electrical Motor Load Schematic Provided by IHSNot f
28、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL -M-70806 ( AR) CONTROL i SOLSNOID VALVE. POWER SUPPLY 26-36 Mc 27.5 Mc NOnINAL , .O13 t .O03 OHM - mpmw 600 MPS CA?ACITY - - . FIGUR 4B. Typical Electrical Motor Power Schematic 11 Provided by IHSNot for ResaleNo repro
29、duction or networking permitted without license from IHS-,-,-MIL-M-70806( AR Z I FIGURE 5. Shock and Vibration Axes 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-M-708Ob 61 W 9997906 0443248 7 MIL -M-.70806 ( AR FIGURE 6. Vibration Profile
30、13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-70BOb bL m 999770b 0443247 O m MI L-M-70806( AR) 3.3.1.1 Standards of design and manufacture. Unless otherwise specified and where applicable, the motor assembly shall be in accordance with the
31、 following requirements of MIL-STD-454. Number Subject 2 Capacitors 3 6 Bearings F1 ammabl e Materi al s 11 Insulating Materials (Class II) 12 Fastener Hardware 15 Ferrous Al 1 oys , Corrosion Resi stance 19 Termi na1 s 21 Castings 23 r Adhesives 24 Welds, Resistance, Electrical Interconnections 26
32、Arc-Resistant Material s 59 Brazing 3.3.1.2 Mounting and support flanges. conform to the motor assembly Drawing 11668642. The mounting and support flanges shall 3.3.1.3 Shaft. A shaft extension with keyway shall conform to motor assembly Drawing 11668642. 3.3.1.4 Brush holders. 3.3.1.4.1 Accessibili
33、ty. Brush holders shall be readily accessible for adjustment and renewal of brushes and springs. 3.3.1.5 Free end play, The free end play clearance of the shaft shall be .O10 - inches maximum. . 3.3.1.6 Connections. 3.3.1.6.1 Securing connections. All connections liable to become loosened by vibrati
34、on shall be provided with locking devices. Connections and leads shall be secured in a reliable manner to prevent their coming in contact with moving or stationary parts. 3.3.1.7 Connector, external. The connector must mate with and seal shell assembly 8724242. 14 Provided by IHSNot for ResaleNo rep
35、roduction or networking permitted without license from IHS-,-,-MIL-M-70806 61 9999906 Oqq3250 7 MIL-M-70806( AR) 3.3.1.8 Class of insulation. The insulation shall be a minimum of Class H ( 180C ) per NEMA Standards. 3.3.1.9 Solderin Electrical connections not welded or otherwise mechanically connect
36、ed + shal e soldered in accordance with MIL-S-45743. 3.3.1.10 Dissimilar metals. Except where necessary to complete an electrical circuit, contact between dissimilar metals, which would foster galvanic actions should be avoided. Where such contact is not necessary to complete an electrical circuit,
37、but is otherwise unavoidable, parts shall be electrically insulated. Dissimilar metals are defined in MIL-STD-889. 3.3.2 Electro-magnetic interference. The motor assembly when operating per MIL-STD-462 under the intermittent duty cycle of 2.5 t 0.5 seconds ON and 2.5 - t 0.5 seconds OFF, shall meet
38、the requirement of MIL-STD-461 electrical /el ectro-mechanical equipment. for 3.3.3 Identi fi cati on and markings. 3.3.3.1 Permanent mark. The military part number and ser al number sha 1 be permanently inscribed on the frame in the location shown on Motor Assembly Drawing 11668642. 3.3.3.2 Name la
39、te. Nameplate markings shall conform to MIL-STD-130. The . MIL-STD-130 and positioned as shown on Motor Assembly Drawing 11668642. nameplate shall include the following minimum information: nameplate -3-6- sha 1 e firmly attached to the exterior of the motor in accordance with The a. Manufacturers n
40、ame, CAGE number, serial number, date of manufacture. b. Nominal voltage, horsepower, type of winding, speed and duty. c, Class of insu d. Military part e. Federal stock ation. number. number (when assigned). 3.3.4 Workmanshi . The motor assembly shall be free of any electrical , mechanidsical defec
41、t which Wou1 d affect the re1 iabil i ty or performance of the power supply. 3.3.5 Interchangeability, All similar parts, including repair parts, of the motor assembly furnished on the same order or built to the same drawings, shall be strictly interchangeable without the necessity of further machin
42、ing, selective assembly, or hand fitting of any kind. 3.3.6 Recycled, reclaimed, and virgin materials. item will be jeopardized by the use of reclaimed or recycled materials, in preparing new and revising or amending specifications, preparing activities will ensure that: Except when intended use of
43、the 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-70b bL 777770b 0443251 7 M a. There is no exclusion to the use of recovered materials. b. There is no requirement that an item be manufactured from virgin material s. c. Within 1 year from
44、the date of issue by the Environmental Protection Agency of guidelines designating items which are or can be produced with recovered materials, specifications for such products require the use of recovered material s to the maximum extent possible. 4. QUALITY ASSURANCE PROVISION$ 4.1 Responsibility
45、for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. otherwise specified in the contract or purchase order, the contractor may use his own or any ot
46、her facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and servic
47、es conform to prescribed requirements. Except as The 4.1.1 Responsibility for compliance, All items shall meet all requirements of sections 3 and 5. part of the contractors overall inspection system or quality program. absence sf any inspection requirements in the specification shall not relieve the
48、 contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however,
49、this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. The inspection set forth in this specification shall become a The 4.1.1.1 Inspection equipment. Inspection equipment or measuring setups must be capable of repetitive
