Collar drill bushing form A to DIN 172, bore 25 x 36 mm, collar 39 mm, case-hardening steel

This bushing of the medium series guides drills of 25 mm diameter over 36 mm. The collar with 5.0 mm height stops the bushing from being pushed down through the holder during machining and sets its height clearly.

Benefits

• Form A to DIN 172, the bore is rounded on the collar side so the tool enters easily
• Bore 25 mm, ground and dimensionally accurate to DIN 172
• Overall length 36 mm in the medium series
• Outside diameter 35 mm for the press fit in the drill plate
• Collar 39 mm with 5.0 mm height for axial location
• Case-hardening steel, hardened to 740 ± 80 HV 10 and ground

Applications

It is typically fitted into the drill plates of jigs in mechanical engineering, contract manufacturing and mould making, where the same 25 mm hole is produced again and again in the same place.

Standard and material

Dimensions and tolerances follow DIN 172 in form A. In form A the bore is rounded only on the side of the collar. The bushing is made of hardened and ground case-hardening steel with a hardness of 740 ± 80 HV 10.