Collar drill bushing DIN 172 form B, bore 12.6 mm, length 28 mm, collar 26 mm, hardened steel

This bushing of the medium series guides drills of 12.6 mm diameter over 28 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

• Ground guiding bore of 12.6 mm within the tolerances of DIN 172
• Press fit of 22 mm outside diameter in the holder of the jig
• All-round collar of 26 mm diameter and 4.0 mm height acting as a stop
• Guiding length of 28 mm, medium design
• Form B design of DIN 172 with the bore rounded on both sides, also for a reversed fit
• Hardened case-hardening steel at 740 ± 80 HV 10 with a ground surface

Applications

The bushing is used in drilling jigs in tool and fixture making, in series production and in repair work where holes have to be placed repeatably.

Standard and material

The design complies with DIN 172 form B. 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.