Collar drill bushing form B to DIN 172, bore 8.9 x 25 mm, collar 18 mm, case-hardening steel

The collar drill bushing with a 8.9 mm bore comes in the long series at 25 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

• Bore 8.9 mm, ground and dimensionally accurate to DIN 172
• Collar 18 mm with 3.0 mm height for axial location
• Outside diameter 15 mm for the press fit in the drill plate
• Case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Overall length 25 mm in the long series
• Form B to DIN 172, the bore is rounded on both sides and can be loaded from either end

Technical data

Applications

It is typically fitted into the drill plates of jigs in mechanical engineering, contract manufacturing and mould making, where the same 8.9 mm hole is produced again and again in the same place.

Standard and material

The basis is DIN 172, form B, with a guiding bore of 8.9 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.