Drill_Bushes

Ref: DIN172 Headed Drill Bush (Liner Bush) *Tolerance range H6 or H7 for drilling jig/fixture How to Order: Ref: DIN172 Type=A d 1 =10 l 1 =12 => DIN172A 10,0-12 14 Specification: Hardened and tempered, ground intenally and externally Type A : Bore radiused at one end Type B : Bore radiused at both ends, available on request These drill bushes are supplied with a lead in chamfer or relief Material: Case-hardened steel selected by manufacturer Hardened: 740 + 80 HV10 For applications involving positioning, we recommend ISO8734A dowel pins, see page 16 d 1 d 2 * F 7 Short Medium Long n 6 Above 0.4 - 0.8 - - 0.9 - 1.0 1.1 - 1.8 4 7 1.9 - 2.6 5 8 2.7 - 3.3 6 9 3.4 - 4.0 7 10 4.1 - 5.0 8 11 5.1 - 6.0 10 13 6.1 - 8.0 12 15 8.1 - 10.0 15 18 10.1 - 12.0 18 22 12.1 - 15.0 22 26 15.5 - 18.0 26 30 18.5 - 22.0 30 34 22.5 - 26.0 35 39 26.5 - 30.0 42 46 30.5 - 35.0 48 52 35.5 - 42.0 55 59 42.5 - 48.0 62 66 48.5 - 55.0 70 74 55.5 - 63.0 35 67 78 78 82 4 Graded bores d 1 < 15 in increments of 0.1 >15 increments of 0.5mm 2.5 2 3 3.5 25 45 56 16 28 36 20 36 45 0.04 30 56 67 6 5 0.02 12 20 25 4 10 16 20 3 1.5 8 12 16 6 6 3 2 1 0.01 9 - tr l 1 d 3 l 2 r