DLA A-A-55630-1997 FILLERS CONTINUOUS FOR ROTARY SWEEPER BRUSH FOR SWEEPER FRONT MOUNTED OR TOWED TYPE《前装或平拖式的扫频仪的旋转清扫毛刷的连续衬垫》.pdf
《DLA A-A-55630-1997 FILLERS CONTINUOUS FOR ROTARY SWEEPER BRUSH FOR SWEEPER FRONT MOUNTED OR TOWED TYPE《前装或平拖式的扫频仪的旋转清扫毛刷的连续衬垫》.pdf》由会员分享,可在线阅读,更多相关《DLA A-A-55630-1997 FILLERS CONTINUOUS FOR ROTARY SWEEPER BRUSH FOR SWEEPER FRONT MOUNTED OR TOWED TYPE《前装或平拖式的扫频仪的旋转清扫毛刷的连续衬垫》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、A-A-556305 December 1997COMMERCIAL ITEM DESCRIPTIONFILLERS, CONTINUOUS, FOR ROTARY SWEEPER BRUSH:FOR SWEEPER, FRONT MOUNTED OR TOWED TYPEThe General Services Administration has authorized the use of thiscommercial item description (CID) for all federal agencies.1. SCOPE. This CID covers the general
2、requirements for continuous, flat and convoluted ring, steel andplastic fillers for high speed rotary sweepers. Fillers covered by this CID are intended forcommercial/industrial applications.2. CLASSIFICATION. The continuous fillers shall be of the following types and classes (see 7.2 and7.4):Type 0
3、1- Flat ring, wire filler (Regular Duty)Type 02- Flat ring, wire tiller (Heavy Duty, Class A only)Type 03- Flat ring, plastic fillerType 11- Convoluted ring, wire filler (Regular Duty, Class A only)Type 12- Convoluted ring, wire tiller (Heavy Duty, Class A only)Type 13- Convoluted ring, plastic fill
4、er (Class A only)Class A -10.75 inch Inside DiameterClass B -19.50 inch Inside Diameter3. SALIENT CHARACTERISTICS.3.1 Environmental conditions. The fillers shall satisfactorily withstand storage temperaturesranging from -60”F to + 160”F and operating temperatures ranging from -40”F to +125F.3.2 Oper
5、ating conditions. The fillers shall be for use on sweepers that operate at 0-800 rpmbroom core rotational speed.3.3 Performance. When operated on concrete runways at a sweeping speed of 35 mph, arotational speed of 500 rpm and with a brush pattern of not less than 2 inches but not greater than 4 inc
6、hes,a new filler shall be capable of operating satisfactorily for a minimum of 160 hours. A lack of water/snow,as well as runway surfaces that have been milled for run off grooves may reduce filler operating time to128 hours. For wire fillers the loss of wire 2 inches or longer throughout the life o
7、f the tiller shall notexceed 2 percent of the overall initial weight of the filler. The tillers shall maintain this performance at anyoperational temperature in the range specified in 3.1.Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any data which may Iimprov
8、e this document should be sent to: Defense Industrial Supply Center, Attn.: DISC-BBEE, 700Robbins Avenue, Philadelphia, PA 19111-5096.AMSC N/A FSC 3825Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-556303.4 Construction. Fillers shall have an in
9、side diameter of 10.75 -O+. 125 inches for Class A and19.50-0 + .125 inches for Class B. Overall outside diameter shall be 36 * .50 inches for Class A and 46 f.50 inches for Class B. Each filler shall consist of a steel ring filled with zinc coated wire or polypropylene(poly) bristles and shall be o
10、f the type and class as specified in section 2. Each filler shall be marked with ablack dot or other suitable marking on the ring to indicate the point of maximum static unbalance.3.4.1 R&+ The ring shall be made of coil steel, minimum thickness .040 inch, conforming toSAE J403 (UNS G101 80) and sha
11、ll be solid and continuous with all joints welded to insure structuralintegrity. The ring shall be either the flat or convoluted type as specified in section 2. Each ring shall havesteel drive pins to engage the sweeper core. Class A pins shall have a minimum diameter of.313 inch.Class B pins shall
12、have a minimum diameter of .250 inch. The length of the pins and number of pins perwafer is specified below under the individual wafer types. Each ring shall be pressed closed every 1 *.125inch to ensure maximum strength under high speed conditions.3.4.2 Bristles.3.4.2.1 Wire Bristles. The wire bris
13、tles shall be made of steel conforming to SAE J403 (UNSG 10700) with a regular zinc coating. The bristles shall be .018 inch diameter minimum. The bristles shallbe crimped with not less than 3 crimps per inch at a crimp amplitude of .063 inch minimum. The regularzinc coating shall be applied at not
14、less than.01 ounce per square foot and the tensile strength of the wireshall be in the range of 310,000-355,000 pounds per square inch (psi) after crimping. The bristles shall beheld secure in the ring by not less than 3 wraps of .090 inch diameter minimum or 5 wraps of .076 inchdiameter minimum zin
15、c coated UNS G10080 to UNS G 10700 steel retaining wire.3.4.2.2 Plastic Bristles. Plastic bristIes shall be formed of virgin polypropylene strands and havean oval cross section not less than .070 x.105 inch. The strands shall be crimped and the tensile strengthshall be 35,000 psi minimum after crimp
16、ing. The ring shall have a rubber liner to absorb friction andprotect the bristles from abrasion at the ring edges. The bristles shall be held secure in the ring by not lessthan 3 wraps of .090 inch diameter minimum or 5 wraps of .076 inch diameter minimum zinc coated UNSG 10080 to UNS G 10700 steel
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