Collar drill bushing DIN 172 form B, bore 3.9 mm, length 8 mm, collar 10 mm, hardened steel

The 3.9 mm bore takes up the tool and the overall length of 8 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 10 mm at a height of 2.5 mm.

Benefits

• Bore 3.9 mm, ground and dimensionally accurate to DIN 172
• Collar 10 mm with 2.5 mm height for axial location
• Overall length 8 mm in the short series
• Outside diameter 7 mm for a press fit in the drill plate
• Form B to DIN 172 with the bore rounded on both sides, so the bushing can be used from either end
• 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 B, in which the bore is rounded on both sides. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.