Collar drill bushing DIN 172 form A, bore 42 mm, length 30 mm, collar 59 mm, hardened steel

This collar drill bushing guides drills and reamers of 42 mm diameter over an overall length of 30 mm. The 55 mm outside diameter fits into the drill plate, while the 59 mm collar rests on the plate surface and takes up the feed force.

Benefits

• Bore 42 mm, ground and dimensionally accurate to DIN 172
• Overall length 30 mm in the short series
• Outside diameter 55 mm for a press fit in the drill plate
• Collar 59 mm with 5.0 mm height for axial location
• Case-hardening steel hardened to 740 ± 80 HV 10
• Form A to DIN 172 with the bore rounded on the collar side, so the tool enters easily

Applications

The bushing is used in drilling jigs in tool and fixture making, in series production and in repair work where holes have to be placed repeatably.

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.