1、 INCH-POUND A-A5618E2 November 209 SUPERSEDINGA-A-55618D 25 November 2003 COMMERCIAL ITEM DESCRIPTION CASTER, SWIVEL, KINGPINLESS INDUSTRIAL, HEAVY DUTY WITH TOWING APPLICATION This General Services Administration has authorized the use of thisCommercial Item Description for all federal agencies. 1.
2、 SCOPE: This Commercial Item Description (CID) covers industrial heavy duty kingpinless swivel casters for non-powered material transport and maintenance equipment with towing application for no more than five (5) miles per hour (mph). 2. SALIENT CHARACTERISTICS: 2.1 Casters furnished under this CID
3、 shall be flat mounted plate type kingpinless ball bearing swivel design. Fasteners used in the caster or brake assembly shall be of the locking type. Swivel casters shall conform to the dimensions and load rating as specified in Table I and figures below. FSC 5340Comments, suggestions, or questions
4、 on this document should be addressed to Defense Supply Center Philadelphia (DSCP), ATTN: DSCP-NASA, 700 Robbins Avenue, Philadelphia, PA 19111-5096 or e-mail to dscpg color number 24052 per FED-STD-595. 2.2.2 Kingpinless raceway. Raceway shall be three (3) inches minimum diameter which measured fro
5、m center of ball hearing to center of ball bearing at 180 apart. 2.2.3 Swivel assembly. The kingpinless swivel assembly shall be ball bearing assembly type with a smooth non-binding operation. The raceways shall be heat treated to a minimum hardness of 45 Rockwell C and shall be filled to capacity w
6、ith .500 inch minimum diameter commercial quality steel ball bearings. 2.2.4 Wheel bearing. Wheel bearing shall be precision tapered roller or precision ball journal bearings having a bearing minimum life rating of 2500 hours at rated loads and rated speed and shall be manufactured in accordance wit
7、h high-grade manufacturing practice. Wheel bearing shall be sealed with neoprene lip seal to retain grease and keep out dirt and contaminants. 2.2.5 Axle. The axle shall be .750 inch minimum diameter and shall be constructed of steel. The axle shall secure the wheel by means of a locknut or slotted
8、nut and pin. Axle shall be hollow with lubrication fitting countersunk on the head to provide grease to wheel bearing. During operation, the axle shall not rotate loose or bind the wheel. 2.2.6 Wheel material. Wheel shall be solid metal core polyurethane material with shore A durometer hardness of 9
9、5 5 points, and with crown type thread. Thread thickness shall be one (1) inch. Wheel material shall be able to withstand operating temperatures from -40 degrees F to 180 degrees F and ultraviolet light exposure without chipping, peeling, tearing, or flaking. 2.2.7 Swivel lock. When specified, a fou
10、r position lever operated 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 the
11、 equipment. When disengaged, the ring shall be in the horizontal position and the swivel lock shall permit full 360 free swiveling. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55618E 3 2.2.8 Brake. When specified, a manually operated with sid
12、e or front mounted control lever parking brake shall be provided. The brake shall be tread contact type, using 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 c
13、ontrol lever shall not require a physical force in excess of 50 pounds to set the brake. When disengaged, the brake lever shall be capable of ensuring brake contact surface has a clearance of at least .062 inch off the wheel tread surface. When engaged, the brake shall be able to hold all caster whe
14、els of the vehicle motionless, with the maximum gross load, whether headed up or down a 12 .5 degree incline. Brake shall be designed to withstand daily usage without repair or replacement for a minimum of five (5) years. 2.2.9 Lubrication fitting. The swivel assembly and wheel assembly shall have p
15、ressure lubrication fittings and shall be prelubricated with water repellent grease having a -32 C to +71 C (-10 F to +160 F) operating temperature range. 2.3 Casters as a minimum, shall be able to withstand the following tests: 2.3.1 Static load test. The caster shall be able to withstand four (4)
16、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 five (5) mph minimum on an endless belt or drum type testing machine with a smooth, uninterrupted running surface for a p
17、eriod of(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, looseness of tire tread, or permanently deformed members. 2.3.3 Obstacle test. The caster shall be loaded to rated capacity and shall be run
18、continuously (see 6.3) at five (5) mph minimum on an endless belt or drum type testing machine for a minimum duration of two (2) hours. There shall he an obstacle (see 2.3.3.1) at every 6 feet of travel of the machine. At the completion of the test, there shall be no indication of excess wear to the
19、 bearing races, looseness of bearings, scuffing of tires, or looseness of tire tread, or permanently deformed members, or loss of any fastener on the caster or brake assembly. For caster equipped with brakes, the vibration and shock encountered during the test shall not cause the brake to engage or
20、looseness of brake assembly. 2.3.3.1 Obstacles shall consists of a rectangular cross-sectioned steel bar .250 inch in thickness, so mounted that the longitudinal axis of the obstacles perpendicularly across the path of the casters. 2.3.4 Brake test. For casters furnished with a brake, the brake must
21、 prevent wheel rotation from a horizontal pulling force equal to 120 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 applying a horizontal pulling force on a rated load evenly dis
22、tributed over four (4) casters, two of which will have the brakes engaged. The test should be repeated a minimum of four (4) times, 2.3.4.1 Brake endurance test. The brake assemblies shall be actuated a minimum of 4,000 cycles. Each cycle shall consists of engaging the brake, applying a 50-100 pound
23、s horizontal force with the brake engaged, and then disengaging the brake. Upon completion of this test, the brake assemblies shall show no signs of excessive wear, loosening of fasteners, loss of parts, or permanently deformed members. 2.3.4.2 Brake incline test. The brake shall hold the vehicle mo
24、tionless, with the maximum gross load, whether headed up or down a 11.5 incline plane. The test shall be conducted on a dry incline concrete floor with the rated load evenly distributed over four (4) casters, two of which will have the brakes engaged. 2.3.5 Impact test. Caster shall be able to withs
25、tand impact delivered by a drop hammer at 2 times the rated load without damage. 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. PROD
26、UCT CONFORMANCE PROVISIONS. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55618E 4 4.1 Product conformance. The products provided shall meet the salient characteristics of this commercial item description, conform to the producers own drawings,
27、 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 require proof of such conformance. 4.2 Certificates of Conformance. Manufacturer shall provide Certificates of Conformance for the
28、caster working temperature and the ultraviolet light stabilizer for the wheel material. 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 dimensions are in inches. 6.2 Unless otherwise specified in the co
29、ntract 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 manufacturer. 6.4 Unless otherwise specified, tolerance: .xx .12, .xxx
30、 .031. 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, a code letter for wheel material. Add “B” for Brake (optional) and/or “L” for swivel lock (optional) and/or “G” for
31、painted finish (optional) after PIN number. Example: AA55618 -8 P B L G - - Add “G” for painted green, omit for zinc plated (see 2.2.1) Swivel LockBrake Polyurethane wheel Dash number Basic CID number 6.6 Cross-reference data. Rubber wheel caster PINs per rev B of this CID have been cancelled and ar
32、e replaced by polyurethane wheel caster PINs. Table II. Cross-reference table Cancelled PIN Replacement PIN AA55618-8UBL AA55618-8PBL AA55618-8HUBL AA55618-8HPBL AA55618-12UBL AA55618-12PBL Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55618E 5
33、 6.7 Source of documents. 6.7.1 FAR. The FAR may be obtained from the Regulatory Secretariat, 1800 F Street NW, Washington, DC 20405 or online at http:/www.acqnet.gov. 6.7.2 Government documents. Copies of Military and Federal documents are available online at http:/assist.daps.dla.mil or from the S
34、tandardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. 6.7.3 ASTM Standards. Copies of ASTM standards may be obtained from the ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or online at http:/www.astm.org. 6.8 Ordering data. T
35、he contract or order should specify the following: a. CID document number, revision, and CID PIN. b. Product conformance provisions. c. Packaging requirements. 6.9 Key words. Horn Assembly Raceway Swivel Lock 6.10 Changes from previous issue. The margins of this specification are marked with vertica
36、l lines to indicate where changes from the previous issue were made. This was 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
37、 content irrespective of the marginal notations and relationship to the last previous issue. Military Interests: Civil Agency Coordination Activity: GSA-FAS Custodians: Navy - AS Preparing Activity: AirForce -9 DLA-IS(Project 5340-209-029) NOTE: The activities listed above were interested in this do
38、cument 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-,-,-
