Collar drill bushing DIN 172 form B, bore 11.7 mm, length 25 mm, collar 22 mm, hardened steel

The 11.7 mm bore takes up the tool and the overall length of 25 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 22 mm at a height of 4.0 mm.

Benefits

• Bore 11.7 mm, ground and dimensionally accurate to DIN 172
• Outside diameter 18 mm for a press fit in the drill plate
• Collar 22 mm with 4.0 mm height for axial location
• Form B to DIN 172 with the bore rounded on both sides, so the bushing can be used from either end
• Overall length 25 mm in the long 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 B, in which the bore is rounded on both sides. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.