Collar drill bushing DIN 172 form A, bore 3.3 mm, length 16 mm, collar 9 mm, hardened steel

This collar drill bushing guides drills and reamers of 3.3 mm diameter over an overall length of 16 mm. The 6 mm outside diameter sits in the press fit of the drill plate, while the 9 mm collar rests on the plate surface and takes up the feed force.

Benefits

• Overall length 16 mm in the long series
• Outside diameter 6 mm for the press fit in the drill plate
• Bore 3.3 mm, ground and dimensionally accurate to DIN 172
• Form A to DIN 172, the bore is rounded on the collar side so the tool enters easily
• Collar 9 mm with 2.5 mm height for axial location
• Case-hardening steel, hardened to 740 ± 80 HV 10 and ground

Applications

It suits drilling jigs, drill templates and assembly fixtures in which the tool has to be guided safely over 16 mm, even with frequent tool changes.

Standard and material

The basis is DIN 172, form A, with a guiding bore of 3.3 mm. In form A the bore is rounded only on the side of the collar. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground afterwards.