Collar drill bushing form B to DIN 172, bore 21 x 45 mm, collar 34 mm, case-hardening steel

When drilling in jigs, this bushing keeps the 21 mm tool on position. The guiding length is 45 mm, the press fit measures 30 mm in diameter and the collar 34 mm.

Benefits

• Form B design of DIN 172 with the bore rounded on both sides, also for a reversed fit
• Ground guiding bore of 21 mm within the tolerances of DIN 172
• Guiding length of 45 mm, long design
• Press fit of 30 mm outside diameter in the holder of the jig
• All-round collar of 34 mm diameter and 5.0 mm height acting as a stop
• Hardened case-hardening steel at 740 ± 80 HV 10 with a ground surface

Applications

It is used wherever holes of 21 mm have to be produced without centre punching and without wandering, for example in jigs for series parts, in assembly gauges or in prototype work.

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.