Collar drill bushing DIN 172 form A, bore 7.2 mm, length 16 mm, collar 15 mm, hardened steel

The 7.2 mm bore takes up the tool and the overall length of 16 mm provides a long guide. The case-hardening steel is hardened to 740 ± 80 HV 10 and ground, so the bore stays dimensionally accurate even after many machining cycles. The collar measures 15 mm at a height of 3.0 mm.

Benefits

• Bore 7.2 mm, ground and dimensionally accurate to DIN 172
• Outside diameter 12 mm for a press fit in the drill plate
• Collar 15 mm with 3.0 mm height for axial location
• Form A to DIN 172 with the bore rounded on the collar side, so the tool enters easily
• Overall length 16 mm in the medium series
• Case-hardening steel hardened to 740 ± 80 HV 10

Applications

It is used wherever holes have to be produced repeatedly in the same position, for example in fixture construction, assembly and gauge making.

Standard and material

The design complies with DIN 172 form A, in which the bore is rounded only on the collar side. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.