Collar drill bushing form A to DIN 172, bore 9 x 12 mm, collar 18 mm, case-hardening steel

With a bore of 9 mm and an overall length of 12 mm, this bushing keeps the tool on track inside the drilling jig. The collar of 18 mm diameter and 3.0 mm height bears on the drill plate and secures the bushing against axial slipping.

Benefits

• Guiding length of 12 mm, short design
• Press fit of 15 mm outside diameter in the holder of the jig
• Ground guiding bore of 9 mm within the tolerances of DIN 172
• Form A design of DIN 172 with the bore rounded on one side, on the side of the collar
• All-round collar of 18 mm diameter and 3.0 mm height acting as a stop
• Hardened case-hardening steel at 740 ± 80 HV 10 with a ground surface

Applications

It suits drilling jigs, drill templates and assembly fixtures in which the tool has to be guided safely over 12 mm, even with frequent tool changes.

Standard and material

The basis is DIN 172, form A, with a guiding bore of 9 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.