Collar drill bushing form A to DIN 172, bore 28 x 45 mm, collar 46 mm, case-hardening steel

Made for holes of 28 mm, this bushing guides the tool over 45 mm. The medium series combines a press fit of 42 mm outside diameter with a 46 mm collar that holds the bushing in the plate.

Benefits

• Ground guiding bore of 28 mm within the tolerances of DIN 172
• Press fit of 42 mm outside diameter in the holder of the jig
• All-round collar of 46 mm diameter and 5.0 mm height acting as a stop
• Guiding length of 45 mm, medium design
• Form A design of DIN 172 with the bore rounded on one side, on the side of the collar
• Hardened case-hardening steel at 740 ± 80 HV 10 with a ground surface

Applications

It is typically fitted into the drill plates of jigs in mechanical engineering, contract manufacturing and mould making, where the same 28 mm hole is produced again and again in the same place.

Standard and material

The basis is DIN 172, form A, with a guiding bore of 28 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.