1、A-A-593b7 M 7038054 0004558 668 I INCH-POUND A-A-593 67 2 April 1999 SUPERSEDING 29 March 1991 MIL-S -23244D COMMERCIAL ITEM DESCRIPTION SHEARING MACHINES, METAL SQUARING, MANUALLY OPERATED The General Services Administration has authorized the use of this commercial item description in preference t
2、o MIL-S- 23244 for all federal agencies. 1. SCOPE. This commercial item description (CID) covers hand and foot operated squaring shears, equipment and accessories herein specified with a shearing capacity of 16 gauge mild steel. 2. CLASSIFICATION. Shearing machines shall be of the following types an
3、d sizes. 2.1 Tvpe. Type is defined as the combination of frame design and method of operation. Unless otherwise specified (see 7.3), the types described herein are as follows: Type I - Bench mounting, gapless frame, hand lever operation. Type II - Floor mounted, gapless frame, foot treadle operation
4、. Type III - Floor mounted, gap frame, foot treadle operation. 2.2 Size. Size is defined as the cutting width of the machine. Unless otherwise specified (see 7.3), the sizes described herein are as follows: Size A - 6 inches Size B - 12 inches Size C - 24 inches Size D - 36 inches Size E - 48 inches
5、 Size F - 52 inches Size G - 72 inches Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any data which may improve this document should be sent to: Defense Supply Center Richmond, ATTN: DSCR-VBD, Richmond, VA 23297-5610. AMSC N/A FSC 3445 DISTRIBUTION STATEMENT A
6、. Approved for public release; distribution is unlimited. , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-593b7 = 9038054 0004559 5T4 Type I I Size Minimum cutting Minimum back gauge Minimum fiont gauge length (inches) range (inches) range (inc
7、hes) A 6 o- 12 NIA B 12 0-12 NIA A-A-59367 I 3. SALIENT CHARACTERISTICS C 24 o- 12 NIA 3.1 Design. The shearing machine shall include all components, parts, and features necessary to meet the performance requirements specified herein. The shearing machine shall be manudly operated and designed to ac
8、complish shearing of 16 gauge mild steel by the movement of a crosshead mounted upper shear blade past the stationary lower shear blade. The operating mechanism shall be designed to assure that sufficient force is developed by a single stroke of the lever to accomplish the shearing performance requi
9、rements of this CID. The shearing machine shall comply with the requirements of ANSI B 1 1.4 and the safety requirements of OSHA 29 CFR 1910. I II II II, III II 3.2 Frame. The fiame shall consist of a crosshead, holddown mechanism, bed and shear blades. The minimum cutting length of the shearing mac
10、hine shall be as specified in table I. D 36 O - 25 NIA D 36 0-25 O - 30 E 48 O -25 O - 30 F 52 0-25 O - 30 G 72 O - 25 0-30 TABLE I. Shearing Machine Tvues and Sizes. 3.2.1 Crosshead. The crosshead shall be constructed of either iron or steel, designed to guide the upper shear blade during shearing
11、action. The crosshead shall be provided with adjustable stops for controlling the disthce of blade travel. Crosshead travel shall be accomplished on machined bearing surfaces with provisions to compensate for wear. 3.2.2 Holddown mechanism. Shearing machines with cutting capacities greater than 6 in
12、ches in length shall be provided with a holdown, or similar device, for holding the work piece securely in place during cutting operations. The holddown shall be either automatic or manuaily operated. The holddown mechanism shall provide an unobstructed view of the shearing action fiom the operators
13、 station when the holddown mechanism is activated. 3.2.3 conform to the producers own drawings, specifications, standards and quality assurance practices; and be the same product offered for sale in the commercial market. The government reserves the right to require proof of such conformance. 6. PAC
14、KAGING. Preservation, packing, and marking shall be as specified in the contract or order (see 7.3). 7. NOTES 7.1 Part identification number (PIN). The following part identification numbering procedure is for government purposes and does not constitute a requirement for the contractor. This example
15、describes a part numbering system for CID A-A-59367. - A 59367 X x Size: A-6 inch B - 12 inch C - 24 inch D - 36 inch E - 48 inch F - 52 inch G - 72 inch Type: 1 - Type I - Bench mounting, gapless frame, 2 - Type II - Floor mounted, gapless frame, 3 - Type III - Floor mounted, gap frame, foot hand l
16、ever operation. foot trendle operation. trendle operation. CID Number I Prefix 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-593b7 = OLB054 00045b3 T25 A-A-59367 7.2 Referenced documents. 7.2.1 ANSI B 1 1.4 is available from the American Nati
17、onal Standards Institute, 1430 Broadway, New York, NY 10018-3363. 7.2.2 OSHA, 29 CFR 1910 maybe obtained from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. 7.2.3 FED-STD-376 is available fiom the Standardization Documents Order Desk, Building 4D, 700 Robbins
18、 Avenue, Philadelphia, PA 191 11-5094. 7.2.4 Federal Acquisition Regulation (FAR) maybe obtained from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. 7.3 Ordering, data. Purchasers should select the preferred options permitted herein, and include the following
19、 information in order: a. Title, number, and date of this commercial item description. b. Type (see 2.1). c. Size (see 2.2). d. Optional equipment, if required (see 3.7) e. Physical size limitations, if applicable (see3.8). f. Additional data plates, if required (see 3.1 O). g. Nameplate, if differe
20、nt (see 3.1 1). h. Packaging, if different (see 6). 7.4 National stock numbers CNSNs). The following NSNs correspond to this CID. The list is not indicative of all possible NSNs associated with this document. “ Old PIN New PIN 3445-00-239-0706 M232442A36 A593672D 344500-243-266 1 M232442B52 A5 93 67
21、3F 3445-0 1-036-9086 M23244 1A36 A593671 D 3445-01 -438-781 8 M232442B52 A593673F 3445-00-294-6467 M232442B52 A593673F 7.5 Intended use. Shears covered by this commercial item description are for use in machine production; repair, and maintenance shops. 6 Provided by IHSNot for ResaleNo reproduction
22、 or networking permitted without license from IHS-,-,-A-A-59357 M 9018054 0004561 961 = A-A-593 67 i MILITARY INTERESTS: Custodians Army-AL Navy - SH Air Force - 99 PREPARING ACTIVITY: - DLA - GS (Project 3445-0149) 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
