Collar drill bushing DIN 172 form A, bore 28.5 mm, length 56 mm, collar 46 mm, hardened steel

The 28.5 mm bore takes up the tool and the overall length of 56 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 46 mm at a height of 5.0 mm.

Benefits

• Bore 28.5 mm, ground and dimensionally accurate to DIN 172
• Collar 46 mm with 5.0 mm height for axial location
• Overall length 56 mm in the long series
• Outside diameter 42 mm for a press fit in the drill plate
• Form A to DIN 172 with the bore rounded on the collar side, so the tool enters easily
• Case-hardening steel hardened to 740 ± 80 HV 10

Applications

Typical fields of use are drilling templates, fixtures for small batch and series production, mould making and maintenance.

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.