US Army Tank -- Automotive and Armaments Command -- Rock Island( TACOM-RI) Attn: AMSTA-CM-CR, Rock Island, IL 61299-7630

29 -- BORING MACHINE, ENGINE CYLINDER POC Linda Hultman, Contract Specialist, 309-782-3392 The U.S. Government, TACOM-Rock Island, Illinois, is seeking sources for a Boring Machine, Engine Cylinder, portable or frame mounted. The required Boring Machine is a portable cylinder boring bar that is mounted directly onto an engine block and is clamped thereon through an adjoining cylinder. The desired machine is a Size 2 in accordance with Commercial Item Description number A-A-50314 with a boring capacity as listed herein. The Army is also interested in the availability of this same size and capacity boring bar, that is permanently mounted to a frame or stand and that will also support the engine block during the boring operation. Specific Capacity and Accuracy requirements (per A-A-50314) are as shown: Capacity: Size 2. The Size 2 boring machine is capable of boring cylinder diameters in a size range of from at least 3.50 to no less than 7.50 inches, with a bore stroke of at least 18 inches. Depth of cut. The boring machine is capable of producing a rough-cut depth of 0.040 inch and a finish-cut depth of 0.015 inch in a cast iron engine block. Each depth of cut specified above is to be accomplished in a single pass. Accuracy. When the boring machine is operated at the finish-cut depth, the finished bore is to be within the following limits: Diameter: + 0.001 inch; Taper: 0.001 inch in maximum length bore; Out-of-roundness: 0.001 inch; Surface roughness: 63 micro inches, arithmetical average. To respond to this request, manufacturers and suppliers should send all information to the following address on or before 26 June 2000: Commander, U.S. Army TACOM-ARDEC, ATTN: AMSTA-AR-WEP-RB, Mr. Irvin Eyre, Rock Island, Illinois, 61299-7300. The point of contact for the U.S. Army is Irvin Eyre, 309-782-8149 or Linda Hultman, AMSTA-LC-CTTE, 309-782-3392. Posted 06/09/00 (W-SN463224). (0161)

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