KS B 7921-2007 Agricultural tractors and machinery-General purpose quick-action hydraulic couplers《农业拖拉机液压输出连接器主要尺寸》.pdf

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1、 KS B 7921KSKSKSKSSKSKSKS KSKSKS SKSKS KSKS SKS KS KS B 7921: 2007(2012 ) 2007 8 28 http:/www.kats.go.krKS B 7921: 2007 : ( ) ( ) ( ) ( ) () ( ) : (http:/www.standard.go.kr) : :1999 10 2 :2007 8 28 :2012 12 26 : 20120770 : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS B 7921: 2007 (2012 ) Agric

2、ultural tractors and machinery General purpose quick-action hydraulic couplers 2005 KS B 7921( ) 2002 KS B ISO 5675( ) KS B 7921: 2005 ( ) . KS B ISO 5675: 2002 . 1 . 2 . . ( ) . KS B ISO 4397: 2002, KS B ISO 5676: 2002, KS B ISO 7241 1: 2004, 1: KS B ISO 7241 2: 2004, 2: ISO 5675: 1992, Agricultura

3、l tractors and machinery General purpose quick-action hydraulic couplers 3 . 3.1 3.2 KS B 7921: 2007 2 4 4.1 1 1 . . 1 l8 d6 12.5 mm 31 mm , 20 mm 38 mm . KS B ISO 4397 . KS B ISO 7241 1 , . a d4 1 l5l8l4l3l2l11.6 l6l7d5 d1d1d2d3d4 a 86 HR 15 N d3 d6KS B 7921: 2007 3 1 : mm a d1d2 d3 d4b d5l1l2cl3l4

4、l5 l6 l7 9.5 (PT3/8)d24.1 18.3 18.4 17.2 17.3 3 3.968 3.80.7 1.5 8.8 9.0 9.9 10.018 0.5 7 44 46 12.5 (PT1/2) 30.3 23.66 23.74 20.48 20.56 4.5 4.762 4 0.7 1.5 9.2 9.4 11.611.824 0.5 8.5 44 46 20 37.1 30.4 30.5 29.0 29.1 5.4 4.762 7.21.0 2.5 15.916.117.517.727.5 0.6 13.7 44 46 a4.1 b d4 . c , , . d IS

5、O 5675 . 4.2 4.2.1 12.5 mm 45 L/min 0.35 MPa , 20 mm 70 L/min 0.35 MPa . KS B ISO 7241 2 . , . 4.2.2 25 MPa . 70 MPa . 4.2.3 16 MPa . 12.5 mm 0.25 MPa , 20 mm 0.100 MPa 200 N . 4.2.4 17.5 MPa , 12.5 mm 1.7 kN , 20 mm 2.5 kN . KS B ISO 7241 2 . 4.2.5 12.5 mm 2.5 mL, 20 mm 9 mL . KS B ISO 7241 2 . 4.2

6、6 , 12.5 mm 45 N, 20 mm 70 N . 4.2.7 , . 5 5.1 KS B 7921: 2007 4 , . 5.2 5.1 . , . , , 1 200 mm . 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ KS B 7921: 2007KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Agricultural tractors and machineryGeneral purpose quick-action hydraulic couplers ICS 65.060.10 Korean Agency for Technology and Standards http:/www.kats.go.kr

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