1、 A-A5617C 2 November209 SUPERSEDINGA-A5617B 29 May 98COMMERCIAL ITEM DESCRIPTION CASTER, INDUSTRIAL, MEDIUM DUTY The General Services Administration has authorized the use of this Commercial Item Description for all federal agencies. 1. SCOPE: This Commercial Item Description (CID) covers industrial
2、 medium duty rigid or swivel casters suitable for nonpowered material transport equipment. 2. SALIENT CHARACTERISTICS: 2.1 Casters furnished under this CID shall be flat mounted plate type rigid casters or double ball-bearing swivel casters. Rigid or swivel casters shall conform to the dimensions an
3、d load rating as specified in Table I and figures below. B A A B2.6253.0004.003.0003.6254.50FIG 1. RIGID CASTER FIG. 2. SWIVEL CASTERC4 X .437 WIDE SLOT FIG. 3. MOUNTING PLATE FOR RIGID OR SWIVEL CASTERS FSC 5340 INCH-POUNDComments, suggestions, or questions on this document should be addressed to D
4、efense Supply Center Philadelphia (DSCP), ATTN: DSCP-NASA, 700 Robbins Avenue, Philadelphia, PA 19111-5096 or e-mail to dscpg&ispecommentsdla.mil . Since contact information can change, you may want to verify the currency of this address information using ASSIST Online database at http:/assist.daps.
5、dla.mil . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55617C 2 TABLE I. DASH NUMBERS AND DIMENSIONS. DASH NO. A WHEEL WIDTH WHEEL MATERIAL MIN. LOAD CAPACITY (LBS) OVERALL HEIGHT B MOUNTING BOLT DIAMETER SWIVEL OFFSET C .12 RUBBER 200 4 4.00
6、1.50 METAL 500 5.63 .375 1.50 PHENOLIC 600 .06POLYURETHANE 600 RUBBER 400 6 6.00 2.00 PHENOLIC 800 7.50 .375 1.80 POLYURETHANE 800 .12METAL 800 RUBBER 500 8 8.00 2.00 PHENOLIC 900 9.50 .375 2.00 POLYURETHANE 900 .12METAL 900 2.1.1 Rigid caster. Rigid caster has a rigid horn and wheel assembly permit
7、ting only straight line travel. 2.1.2 Swivel caster. Swivel caster has a swivel horn and wheel assembly that will rotate through 360. 2.2 Mounting plate and horn assembly. The mounting plate and horn assembly shall be made of steel plate, cast or forged steel, or aluminum. The horn legs shall be eit
8、her an integral part of the horn plate or welded thereto. The area adjacent to mounting holes shall have sufficient clearance to allow mounting hardware installation to provide for clearance for all intended operations. 2.2.1 Finish. Except for aluminum, exposed metal surfaces of the caster assembli
9、es shall be zinc plated per ASTM B633, Type II or III, SC2 2.2.2 Kingpin. The kingpin for swivel casters shall be constructed of steel with minimum .625 inch diameter. The kingpin shall be secured with rivet, or nut and bolt designed that will maintain the proper relationship of swivel bearing compo
10、nents for the life of the caster under normal operating conditions. 2.2.3 Swivel assembly. The ball bearing assembly shall be bi-level with a smooth non-binding operation. The raceways shall be smooth and full-case hardened and shall be filled to capacity with commercial quality steel ball bearings.
11、 2.2.4 Axle. The axle shall be constructed of steel and shall secure the wheel by means of a locknut or slotted nut and pins. During operation, the axle shall not rotate loose or bind the wheel. 2.2.5 Wheel bearing. The wheel bearing shall be commercial type ball or roller bearings designed and manu
12、factured in accordance with the best standard manufacturing practice for the intended purpose. 2.2.6 Wheel hardness. Except for metal and phenolic wheels, the hardness of treads shall be 70 5 points for rubber and 92 5 points for polyurethane, as measured on the face of the treads by a type A shore
13、durometer. Electrically conductive treads shall have a hardness of 80 5 points. 2.2.7 Metal wheel. Metal wheel shall be fine grain cast iron, steel or aluminum alloy. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55617C 3 2.2.8 Swivel lock. Whe
14、n specified, a four position plunger type swivel lock with a ring for operation shall be furnished. When engaged, the ring shall be in the vertical position and the swivel lock shall prevent the caster from swiveling while rolling or shall prevent rolling while at right angles to the normal path of
15、the equipment. When disengaged, the ring shall be in the horizontal position and the swivel lock shall permit full 360 free swiveling. 2.2.9 Brake. When specified, a manually operated with side or front mounted control lever parking brake shall be provided. The brake shall be tread contact type, usi
16、ng a combination of pressure and friction to prevent wheel rotation. The control lever shall be readily accessible for operation, permitting quick and easy brake application and release. The control lever shall be capable of ensuring brake contact surface has a clearance of at least .062 inch off th
17、e wheel tread surface. 2.2.10 Lubrication fitting. The swivel assembly and wheel assembly shall have pressure lubrication fittings and shall be prelubricated with water repellent grease having a -32C to +71C (-10F to +160F) operating temperature range. 2.2.11 Electrical Conductivity. The electrical
18、conductive wheels shall be of such composition that the average electrical resistance shall be less than 250,000 ohms, and the maximum individual electrical resistance reading shall be less than 1,000,000 ohms when tested as described in 2.3.4. 2.3 Casters furnished shall be able to withstand the fo
19、llowing tests: 2.3.1 Static load test. The caster shall be able to withstand four (4) times its rated capacity for one (1) minute minimum without damage. 2.3.2 Endurance test. The casters shall be loaded to rated capacity and shall be run continuously (see 6.3) at three (3) mph minimum on an endless
20、 belt or drum type testing machine with a smooth, uninterrupted running surface for a minimum period of forty (40) hours. At the completion of the test, there shall be no indication of excess wear on the bearing races, looseness of bearings, scuffing of tires, or looseness of tire tread. 2.3.3 Brake
21、 Test. For caster furnished with a brake, the brake must prevent wheel rotation from a horizontal pulling force equal to 103 percent (%) of the force required to initiate movement of the equipment under rated load with brake disengaged. The test shall be conducted on a level concrete floor by applyi
22、ng a horizontal pulling force on a rated load evenly distributed over four (4) casters, two of which will have the brakes engaged. The test should be repeated a minimum of four (4 ) times. 2.3.4 Electrical Conductivity Test. For caster furnished with electrical conductive tread, the wheel shall be t
23、ested while supporting a load equal to 25 percent (%) of its rated load. The caster to be tested shall be rolled onto a clean, dry, flat metal plate. The metal plate and the metal parts of the caster shall form the electrodes for the test. If the caster is tested while supporting equipment, all othe
24、r casters under the equipment shall be insulated from the floor on which the metal electrode plate is placed. The resistance between the electrodes shall be measured by any resistance measuring apparatus of suitable range, which has an open circuit direct voltage (D.C.) of approximately 500 volts. F
25、or the safety of the operator, the maximum current, which can be delivered by the apparatus through a resistance of 500 ohms, should be less than 10 milliamperes. Measurements shall be made with 5 separate areas of the tire successively in contact with the plate, and the average and the maximum valu
26、es shall be determined. 3. REGULATORY REQUIREMENTS. 3.1 The offerer/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 4. PRODUCT CONFORMANCE PROVISIONS. 4.1 Product conformance. The
27、products provided shall meet the salient characteristics of this commercial item description, conform to the producers own drawings, specifications, standards, and the quality assurance practices, and be the same product offered for sale in the commercial market. The government reserves the right to
28、 require proof of such conformance. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55617C 4 5. PACKAGING. 5.1 Preservation, packing and marking shall be as specified in the contract or order. 6. NOTES. 6.1 Unless otherwise specified, all dimensi
29、ons are in inches. 6.2 Unless otherwise specified in the contract or purchase order, packaging shall be in accordance with ASTM D3951. 6.3 “Continuously” shall mean 45 minutes of rolling operation for each hour of work. The cycling of the stop and go periods shall be at the option of the manufacture
30、r. 6.4 Unless otherwise specified, tolerance: .xx .09, .xxx .030. 6.5 Part Identification Number (PIN). The part identification number (PIN) shall consist of the basic commercial item description number followed by a dash number from Table I, “R” for rigid caster or “S” for swivel caster and a code
31、letter for wheel material. Add “B” for brake (optional) and/or “L” for swivel lock (optional) and/or “E” for electrical conductive tread (optional for code “U” only) after PIN number. Example: AA55617 - 6 S P B L Swivel Lock Brake C (Phenolic) Wheel code P (Polyurethane) U (Rubber) M (Metal) Swivel
32、type caster Dash number Basic number 6.6 Source of documents. 6.6.1 FAR. The FAR may be obtained from the Regulatory Secretariat, 1800 F Street NW, Washington, DC 20405 or online at http:/www.acqnet.gov. 6.6.2 ASTM Standards. Copies of ASTM standards may be obtained from the ASTM International, 100
33、Barr Harbor Drive, West Conshohocken, PA 19428-2959 or online at http:/www.astm.org. 6.7 Ordering data. The contract or order should specify the following: a. CID document number, revision, and CID PIN. b. Product conformance provisions. c. Packaging requirements. 6.8 Key words. Horn Assembly Mounti
34、ng Plate Swivel Lock Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55617C 5 6.9 Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was
35、done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last p
36、revious issue. Military Interests: Custodians: Civil Agency Coordination Activity: Army -AR GSA-FAS Navy - AS Air Force - 99 Preparing Activity: DLA-IS Review Activity: Army - MI (Project 5340-2009-031) 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 http:/assist.daps.dla.mil Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
