Collar drill bushing DIN 172 form B, bore 23 mm, length 36 mm, collar 39 mm, hardened steel

This collar drill bushing guides drills and reamers of 23 mm diameter over an overall length of 36 mm. The 35 mm outside diameter sits in the press fit of the drill plate, while the 39 mm collar rests on the plate surface and takes up the feed force.

Benefits

• Bore 23 mm, ground and dimensionally accurate to DIN 172
• Collar 39 mm with 5.0 mm height for axial location
• Outside diameter 35 mm for the press fit in the drill plate
• Case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Overall length 36 mm in the medium series
• Form B to DIN 172, the bore is rounded on both sides and can be loaded from either end

Applications

It is typically fitted into the drill plates of jigs in mechanical engineering, contract manufacturing and mould making, where the same 23 mm hole is produced again and again in the same place.

Standard and material

The basis is DIN 172, form B, with a guiding bore of 23 mm. 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 afterwards.