Collar drill bushing DIN 172 form A, bore 18 mm, length 36 mm, collar 30 mm, hardened steel

This bushing of the long series guides drills of 18 mm diameter over 36 mm. The collar with 4.0 mm height stops the bushing from being pushed down through the holder during machining and sets its height clearly.

Benefits

• Form A design of DIN 172 with the bore rounded on one side, on the side of the collar
• Ground guiding bore of 18 mm within the tolerances of DIN 172
• Guiding length of 36 mm, long design
• Press fit of 26 mm outside diameter in the holder of the jig
• All-round collar of 30 mm diameter and 4.0 mm height acting as a stop
• 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 18 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.