1、 Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501
2、 E. 11 Mile Road, Warren, MI 48397-5000. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. ASMC N/A FSC 3820 INCH-POUND A-A-52558A 14 September 2010 SUPERSEDING A-A-52558 20 February 1
3、996 COMMERCIAL ITEM DESCRIPTION BREAKERS, PAVING, PNEUMATIC-POWERED; (0.875 INCH HEXAGON BY 3.25 INCH CHUCK) The General Services Administration has authorized the use of this commercial item description (CID) for all federal agencies. 1. SCOPE. This CID covers a 35 pound (lb) 16 kilograms (kg) pneu
4、matic-powered, paving breakers intended for use in breaking up concrete, brick, macadam pavement, loosening compacted gravel and stiff clay. 2. CLASSIFICATION 2.1 Types. The pneumatic-powered paving breakers shall be of two types. Type I utilizes a D-grip handle, and Type II utilizes a T-handle. 3.
5、SALIENT CHARACTERISTICS 3.1 Description. The length of the pneumatic paving breaker (hereinafter referred to as “breaker”), for Type I and Type II breakers, less attachment, shall not be more than 21 inches (in.) and 31 inches (in.) 573 millimeters (mm) and 787 mm respectively. Each type of breaker
6、shall consist essentially of a backhead equipped with a handle and trigger throttle, and a cylinder with chuck and fronthead. At 90 pounds per square inch gage (psig) 621 kilopascals (kPa), the total air consumption of the breaker shall not exceed 46 cubic feet per minute (ft3/min). The breaker desi
7、gn and construction shall be representative of a standard commercial paving breaker with a history of durability and performance, which also meets the requirements of this CID. 3.2 Materials. The materials used for the breaker shall be produced to comply with the requirements and provisions of this
8、CID. The breaker shall be fabricated from compatible materials that are inherently corrosion resistant or treated in order to provide protection against Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52558A 2 the various forms of corrosion and d
9、eterioration. Dissimilar metals shall not be used in intimate contact with each other unless protected against galvanic corrosion. Recovered materials shall be used to the maximum extent practicable. Materials not specified shall be selected by the contractor and shall be subject to all provisions o
10、f this CID. Asbestos, cadmium, and radioactive material will not be used in this item. Radioactive material is defined by Title 10, Code of Federal Regulations, Part 40, and other radioactive material in which the radioactivity is greater than 0.002 microcuries per gram or 0.01 microcuries total act
11、ivity for the item. 3.3 Performance. The force of blow of the breaker shall be not less than 9 foot-pounds (ft-lb) (12.20 Newton-meters (N-m) per blow under vertical operating conditions with no extra force applied on top of the breaker. The piston speed at no load shall be not less than 1800 blows
12、per minute. The breaker shall break a 2 in. (51 mm) or thicker slab of Portland cement concrete. The breaker using the spade in cohesive soil shall operate in all positions from the vertical to the horizontal. The breaker shall accomplish the tasks without evidence of mechanical failure, malfunction
13、, permanent deformation, breakage of any part or component, evidence of wearing of the piston diameter or cylinder diameter of more than 0.001 in. (0.0254 mm), absence of oil vapor in the exhaust air and failure to break the slab of Portland cement concrete. Performance shall be unimpaired at any am
14、bient temperature from -25 degrees Fahrenheit (F) to 120 F -32 degrees Celsius (C) to 49 C. 3.4 Maintainability and reliability. 3.4.1 Maintenance support. Technical manuals, illustrating repair parts and recommended operation and scheduled maintenance, shall be furnished with each breaker. All repa
15、ir parts having the same part number shall be functionally and dimensionally interchangeable. 3.5 Surfaces. All edges shall be rounded or chamfered, and all parts, components, and assemblies of the breaker including surfaces shall be clean, and free from sand, dirt, firs, pits, sprues, scale and oth
16、er harmful or extraneous materials. 3.6 Noise limits. Noise levels shall not exceed 85 decibels dB(A) at operating positions during typical load operations. If it can be shown that 85 dB(A) is beyond the state of the art for this equipment, then a hearing protection warning decal shall be placed on
17、the equipment stating that hearing protection is required within (specify) feet. The distance specified shall be the greatest distance at which 85 dB(A) is met. The decal shall be readable to all personnel exposed to the hazard. Warnings shall also be added to applicable manuals requiring hearing pr
18、otection to be worn within the specified distance. 3.7 Backhead assembly. The backhead assembly shall include a housing, handle, throttle, and throttle valve. The handle for type I shall be D-grip and for type II shall be extension T-handle. The throttle for type I shall be positioned inside the D-g
19、rip. The throttle shall be located for operating from either side of the breaker by the operator. A self-closing lever type throttle shall be furnished. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52558A 3 3.8 Cylinder assembly. The cylinder
20、assembly shall include a cylinder, valve mechanism, piston, and chuck. The valve mechanism shall control the direction of the air to the piston. The piston shall be a combination piston-hammer. The chuck shall be dimensioned to receive standard accessories having collared hexagon shanks 0.875 in. (2
21、2 mm) across the flats by 3.25 in. (830 mm) (see Figure 1). The chuck bushing shall be replaceable. An air cushion of not less than 0.003 in. (0.08 mm) at both ends of the piston stroke shall be furnished. NOTE: Dimensions are in inches. FIGURE 1. Shank dimensions. 3.9 Leader hose. Unless otherwise
22、specified (see 7.3), a 10 foot (ft) long, 0.5 in. inside diameter hose (3 meters (m) long, 13 mm inside diameter) shall be furnished with an external 1/2-14 NPT connector with a double bolt clamp on one end and a 0.5 in. (13 mm) coupling half quick disconnect with male hose fitting with a size 1, pn
23、eumatic hose clamp conforming to SAE J1508 on the other end. 3.10 Air inlet connection. The air inlet connection thread shall be 1/2 in. internal American National pipe thread. The air inlet connection shall be a swivel type connection to allow the operator to position the hose without any tangling
24、or pinching. 3.11 Exhaust port. The exhaust port shall be located to direct exhaust air away from the operator. 3.12 Accessories. When specified (see 7.3), the accessories listed below shall be furnished with the breaker. A latch type retainer shall be provided to prevent any accessory from becoming
25、 accidentally disengaged. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52558A 4 TABLE I. Accessory dimensions. Accessory Length under collar (in.) Tool end (in.) Chisel Moil point Pitch Spade 13.5 to 14.5 13.5 to 14.5 16 to 19 16 to 19 2.75 to
26、 3.25 wide Point 3 to 3.25 wide 5 to 6 wide 3.13 Lubrication. All surfaces requiring lubrication shall be provided with a means for lubricating by an airline oiler. The oiler shall have the contractors standard commercial finish, which shall be smooth even surface, free from runs, sags or foreign ma
27、terial. The type of pneumatic system grease used for lubrication is identified by NATO Code Number G392. 3.14 Identification and marking. Identification and markings shall be permanent, legible and shall include as a minimum the Manufacturers identification code (CAGE), the Part or Identifying Numbe
28、r (PIN), and the National Stock Number (NSN). 3.15 Treatment and painting. The portion of the breaker and its components and parts normally painted shall be cleaned, treated, and painted for a one coat finish. The color shall conform to FED-STD-595, camouflage green 383, chip color 34094. 3.16 Chest
29、. Unless otherwise specified (see 7.3), a chest made of steel or a material of equivalent strength not less than 0.07 in. (4 mm) in thickness shall be provided to hold the breaker, repair parts, and any accessories provided with the breaker. The chest shall have a continuous hinge extending the full
30、 length of the chest edge. The chest lids shall be held closed by not less than two hook type tension latches. A hose and lock shall be provided with the chest. Two lifting handles shall be provided, one located at each end of the chest. 3.17 Retainer. Each breaker shall be provided with a retainer
31、that will prevent the accessory tool from becoming accidentally disengaged from the breaker. All surfaces that are subject to high temperatures shall be covered or guarded. 4. REGULATORY REQUIREMENTS. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable,
32、in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 5. PRODUCT CONFORMANCE PROVISIONS 5.1 Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this CID and that the produ
33、ct conforms to the producers own drawings, specifications, workmanship standards, and quality assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance prior to the Provided by IHSNot for Res
34、aleNo reproduction or networking permitted without license from IHS-,-,-A-A-52558A 5 first delivery and thereafter as may be otherwise provided for under the provisions of the contract. 6. PACKAGING. Preservation, packing, and marking shall be as specified in the contract or order (see 7.3). 7. NOTE
35、S (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 7.1 Government documents. Copies of the FED-STD-595 “Colors Used in Government Procurement” are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D,
36、 Philadelphia, PA 19111-5094 or website https:/assist.daps.dla.mill/quicksearch/. The Federal Acquisition Regulation (FAR) may be obtained from http:/acquisition.gov/far/. 7.2 Non-Government documents. Copies of SAE J1508 “Hose Clamps” are available from the Society of Automotive Engineers, 400 Comm
37、onwealth Dr., Warrendale, PA 15096 or www.sae.org. 7.3 Ordering data. Acquisition documents must specify the following: a. Title, number, and date of this CID. b. Type required. c. If required, the specific issue of each individual document listed (see 7.1 and 7.2). d. PIN number and quantity requir
38、ed. e. Applicable level of preservation, packing, and marking. f. When a leader hose is not to be furnished. g. Accessories required. h. When a chest is required. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52558A 6 7.4 Part or identification
39、 number (PIN). The PINs to be used for breakers acquired to this CID are created as follows: AA 52558 X Type: 1 - Type I D-grip handle 2 - Type II T-handle CID number CID designator 7.5 Cross-reference data. Pneumatic powered paving breakers conforming to this CID are interchangeable/substitutable w
40、ith breakers of the same part number conforming to MIL-B-385G. 7.6 Key words. Jack Hammer Construction Demolition MILITARY INTERESTS: CIVIL AGENCY COORDINATING ACTIVITY: GSA - FAS Custodians: Army - AT Preparing Activity: Air Force - 99 Army - AT Review Activities: (Project 3820-2010-002) Air Force
41、- 84 DLA - CC 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-,-,-
