Collar drill bushing form B to DIN 172, bore 40 x 67 mm, collar 59 mm, case-hardening steel

This bushing of the long series guides drills of 40 mm diameter over 67 mm. The collar with 5.0 mm height stops the bushing from being pushed down through the holder during machining and sets its height clearly.

Benefits

• Bore 40 mm, ground and dimensionally accurate to DIN 172
• Overall length 67 mm in the long series
• Outside diameter 55 mm for the 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 and ground
• Form B to DIN 172, the bore is rounded on both sides and can be loaded from either end

Applications

It suits drilling jigs, drill templates and assembly fixtures in which the tool has to be guided safely over 67 mm, even with frequent tool changes.

Standard and material

The basis is DIN 172, form B, with a guiding bore of 40 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.