1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS B ISO 2541 RKS B ISO 2541： 2013 2013 4 5 http:/www.kats.go.krKS B ISO 2541:2013 : ( ) ( ) (AMS) ( ) : (http:/www.standard.go.kr) ： ：2003 7 25 ：2013 4 5 2013-0126 ： ： ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS B ISO 2541:2013 i 1972 1 ISO 2541, Cen
2、tre drills for centre holes with radius form Type R , . KS B ISO 2541:2013 R Centre drills for centre holes with radius form Type R 1 R ( .) . . . 2 ( R ), d d1 ( 1 ). R 2.5/6.3 3 . KS B ISO 2541:2013 2 1 R 1 ： mm d a d1 L l r k12 h9 1.0 (1.25) 1.6 2.0 2.5 3.15 4.0 (5.0) 6.3 (8.0) 10.0 3.15 3.15 4.0
3、 5.0 6.3 8.0 10.0 12.5 16.0 20.0 25.0 33.5 33.5 37.5 42 47 52 59 66 74 83 103 29.5 29.5 33.5 38 43 48 53 60 68 77 97 3.0 3.35 4.25 5.3 6.7 8.5 10.6 13.2 17.0 21.2 26.5 3.15 4.0 5.0 6.3 8.0 10.0 12.5 16.0 20.0 25.0 31.5 2.5 3.15 4.0 5.0 6.3 8.0 10.0 12.5 16.0 20.0 25.0 a( ) . Ll d d1120r KS B ISO 254
4、1:2013 3 A ( ) R ： mm d a D 1.0 (1.25) 1.6 2.0 2.5 3.15 4.0 (5.0) 6.3 (8.0) 10.0 2.12 2.65 3.35 4.25 5.3 6.7 8.5 10.6 13.2 17.0 21.2 a ( ) .d D R 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS B ISO 2541:2013 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Centre drills for centre holes with radius formType R ICS 25.100.30
