1、NOT MEASUREMENT SENSITIVE June 16. 1998 SUPERSEDING March 9,1992 A-A-59246 00-R-2783 COMMERCIAL ITEM DESCRIPTION ROLLER, TOWED, OPEN-FACE TYPE, TWO DRUM The General Services Administration has authorized the use of this commercial item description for all Federal agencies. 1. SCOPE. This commercial
2、item description (CID) covers a two drum, open-face (gnd) type, towed roller. 2. SALIENT CHARACTERISTICS. 2.1 Description. The roller covered by this CID consists essentially of two open-face (grid) type drums mounted on a structural steel frame equipped with a tow bar and hitch. The roller is inten
3、ded for use in: a. Crushing, breaking, and pulverizing large pieces of salvaged asphaltic concrete, loose rocks, and stones. b. Mixing the crushed rocks, stones, and asphaltic concrete with soil. c. Compacting the soil-rock, stone, asphaltic concrete mixture. 2.2 Standard commercial product. The rol
4、ler shall, as a minimum, be in accordance with the requirements of this CID and shall be the manufacturers standard commercial product. Additional or better features which are not specifically prohibited by this CID but which are a part of the manufacturers standard commercial product, shall be incl
5、uded in the roller being furnished. A standard commercial product is a product which has been sold or is currently offered for sale on the commercial market through advertisements or manufacturers catalogs, or brochures, and represents the latest production model. Beneficial comments, recommendation
6、s, additions, deletions, clarifications, etc. and any data which may improve this document should be sent to: officer In Charge (Code 15E2), Seabee Logistics Center, 41 11 San Pedro St., Port Hueneme, CA 93043-4410, by using the Standardization Document Improvement Proposal D Form 1426) appearing at
7、 the end of this document or bv letter. AMSC NIA FSC 3895 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59246 2.3 Maintainability. The roller shall be designed so that accessories and components are readily accessible for repair or replacement
8、with minimum removal or disturbance of adjacent parts or components, using general purpose tools. Operating parts, accessories, and drain outlets shall be readily accessible for regular maintenance service. Drainage of all liquids shall be gravity onto the ground. 2.4 Interchangeability. Ail rollers
9、 of the same classification furnished with similar options under a specific contract shall be identical to the extent necessary to ensure interchangeability of component parts, assemblies, accessories, and spare parts. 2.5 Performance characteristics. The fully ballasted roller shall withstand the s
10、trains imposed without permanent deformation or damage while being towed at a speed of not less than 9 miles per hour (14.5 kilometre per hour) over rough and rocky ground. The roller shall be capable of breaking loose rocks and stones (see 6.3.1 and 6.3 .2), having a minimum compressive strength of
11、 not less than 24,000 pound-force per square inch (psi) (165 474 kilopascal (icpa) and crush, pulverize, mix, and compact large pieces of asphaltic concrete. 2.6 Frame. Frame shall be constructed of either structural steel sections or steel plate with members joined using one of the arc welding proc
12、esses. To withstand the stresses imposed, and to prevent permanent deformation or damage to the roller, the fiame shall be braced and reinforced wherever necessary. A clevis shall be afxed to the back of the fiame to permit towing rollers in tandem. Clevis shall contain a hole to accommodate a 2-inc
13、h (in) (51 millimetre (mm) pin. 2.7 Axles and bearings. Each drum shall be equipped with an independent axle extending entirely through the drum and mounted on heavy-duty bearings. Tapered roller or combination radial thrust-type ball bearings with dust-tight seais shall be used. 2.8 Drums. Drums sh
14、all be constructed with face strips forming square, rectangular, or hexagonal openings on the drums surfaces. 2.9 Cleaners. Roller shall be equipped with adjustable drum cleaners. The cleaners shall be capable of cleaning the drums when roller travels in both the forward and reverse directions. 2.10
15、 Drawbar. The drawbar shall be of such design and construction as to permit either pulling or pushing of the roller. The drawbar shall be equipped wih an adjustable, universal type clevis which shall allow coupling to an SAE J749, size F tractor drawbar. 2.1 1 Jack leg. A jack leg shall be provided
16、for supporting the roller frame in horizontal plane when detached from the tractor. Jack leg shall be retractable, and shall be equipped with a positive locking device to prevent accidental detachment while roller is being towed. No part of the jack leg or its components, while in the stowed positio
17、n, shall interfere with normal operation of the roller. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-59246 9018054 0000811 i00 D A-A-59246 a 2.12 Ballast boxes. Roller shall be equipped with ballast boxes having sufficient volume for 14,000
18、 pounds (lb) (6 350 kilogram (kg) of weight when filled with wet sand. Volume calculations shall be determined using wet sand weighing 115 lbs per cubic foot (1 842 kilogram per cubic metre). Boxes shall be secured to the he. Each box shall be furnished with lifting attachments to allow lifting of t
19、he loaded box (see 2.17). 2.13 Lubrication. Unless otherwise specified (see 6.2), means for lubrication shall be in accordance with the manufacturers standard practice. The lubricating points shall be easily visible and accessible. Hydraulic lubrication fittings shall be in accordance with SAE J534.
20、 Where use of high-pressure lubricating equipment, 1,000 psi (6 895 Wa) or higher, will damage grease seals or other parts, a suitable warning shall be affixed to the equipment in a conspicuous location. 2.14 Identification date. An identification plate will be fiirnished by the contracting officer
21、for each roller. The contractor shall stamp all necessary data in the blank spaces of the plate provided for that purpose, and securely affix a plate to each roller in a conspicuous place with nonferrous screws, rivets, or bolts not less than O. 125-inch (3.175 mm) in diameter. The applicable nomenc
22、lature contained in the contract item description shall be placed in the top blank. 2.15 Instruction plates. The roller shall be equipped with instruction plates suiably located, describing any special or important procedures to be followed in operating and servicing the equipment. Plates shall be o
23、f a material which will last and remain legible for the life of the equipment. Plates shall be securely affixed to the equipment with nonferrous screws or bolts of not less than O. 125-inch (3.175 rnm) diameter. 2.16 Cleaning treatment. and painting. Surfaces normaily painted in good commercial prac
24、tice shall be cleaned, treated, and painted as specified herein. The color of the finish coat shall be as specified (see 6.2). Surfaces to be painted shall be cleaned and dried to ensure that they are free from contaminants such as oil, grease, welding slag and spatter, loose mill scale, water, dirt
25、, corrosion product, or any other contaminating substances. As soon as practicable therefore, each system should be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 6.6 Subiect term ckev word) listing. Fully ballasted Unb ail aste
26、d . MLlTAI%YINTERESTS: custodians: Navy - YD1 Air Force - 99 Review Activities: Navy - MC Air Force - 84 CIVIL AGENCY COORDINATiNG ACTIVITY: GSA - FSS Preparing Activity: Navy - YD1 (Project 3 895-0062) 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
