Collar drill bushing DIN 172 form B, bore 17.5 mm, length 36 mm, collar 30 mm, hardened steel

This collar drill bushing guides drills and reamers of 17.5 mm diameter over an overall length of 36 mm. The 26 mm outside diameter fits into the drill plate, while the 30 mm collar rests on the plate surface and takes up the feed force.

Benefits

• Bore 17.5 mm, ground and dimensionally accurate to DIN 172
• Overall length 36 mm in the long series
• Outside diameter 26 mm for a press fit in the drill plate
• Collar 30 mm with 4.0 mm height for axial location
• Case-hardening steel hardened to 740 ± 80 HV 10
• Form B to DIN 172 with the bore rounded on both sides, so the bushing can be used from either end

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 B, in which the bore is rounded on both sides. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.