Collar drill bushing DIN 172 form B, bore 12.9 mm, length 36 mm, collar 26 mm, hardened steel

This collar drill bushing guides drills and reamers of 12.9 mm diameter over an overall length of 36 mm. The 22 mm outside diameter fits into the drill plate, while the 26 mm collar rests on the plate surface and takes up the feed force.

Benefits

• Bore 12.9 mm, ground and dimensionally accurate to DIN 172
• Collar 26 mm with 4.0 mm height for axial location
• Overall length 36 mm in the long series
• Outside diameter 22 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.