Collar drill bushing DIN 172 form A, bore 11.3 mm, length 12 mm, collar 22 mm, hardened steel

This collar drill bushing guides drills and reamers of 11.3 mm diameter over an overall length of 12 mm. The 18 mm outside diameter fits into the drill plate, while the 22 mm collar rests on the plate surface and takes up the feed force.

Benefits

• Bore 11.3 mm, ground and dimensionally accurate to DIN 172
• Outside diameter 18 mm for a press fit in the drill plate
• Collar 22 mm with 4.0 mm height for axial location
• Form A to DIN 172 with the bore rounded on the collar side, so the tool enters easily
• Overall length 12 mm in the short series
• Case-hardening steel hardened to 740 ± 80 HV 10

Applications

It is used wherever holes have to be produced repeatedly in the same position, for example in fixture construction, assembly and gauge making.

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.