Collar drill bushing DIN 172 form B, bore 18 mm, length 28 mm, collar 30 mm, hardened steel

This collar drill bushing guides drills and reamers of 18 mm diameter over an overall length of 28 mm. The 26 mm outside diameter sits in the press fit of the drill plate, while the 30 mm collar rests on the plate surface and takes up the feed force.

Benefits

• Overall length 28 mm in the medium series
• Bore 18 mm, ground and dimensionally accurate to DIN 172
• Collar 30 mm with 4.0 mm height for axial location
• Outside diameter 26 mm for the press fit in the drill plate
• Case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Form B to DIN 172, the bore is rounded on both sides and can be loaded from either end

Technical data

Applications

It is typically fitted into the drill plates of jigs in mechanical engineering, contract manufacturing and mould making, where the same 18 mm hole is produced again and again in the same place.

Standard and material

The design complies with DIN 172 form B. In form B the bore is rounded on the opposite side as well. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.