Collar drill bushing form A to DIN 172, bore 8.7 x 20 mm, collar 18 mm, case-hardening steel

The collar drill bushing with a 8.7 mm bore comes in the medium series at 20 mm. Its case-hardening steel at 740 ± 80 HV 10 withstands contact with the cutting edge over large batches, and the 18 mm collar fixes its position.

Benefits

• Form A to DIN 172, the bore is rounded on the collar side so the tool enters easily
• Bore 8.7 mm, ground and dimensionally accurate to DIN 172
• Overall length 20 mm in the medium series
• Outside diameter 15 mm for the press fit in the drill plate
• Collar 18 mm with 3.0 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 20 mm, even with frequent tool changes.

Standard and material

The design complies with DIN 172 form A. 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.