Drill bush DIN 179 form B, long type, bore 28.5 mm, length 56 mm, outside dia 42 mm

A drill of 28.5 mm diameter runs guided through 56 mm of this bush and meets the hole at the intended point. The design follows DIN 179, form B, and the bore is rounded on both sides.

Benefits

• Overall length of 56 mm in the long version of the range short, medium and long
• Guide bore of 28.5 mm to DIN 179 for the matching tool
• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Bore rounded on both sides to form B, so the bush can be fitted either way round
• Outside diameter of 42 mm as a ground seat in the drill plate
• Dimensions to DIN 179, so existing bushes can be replaced size for size

Applications

• Series drilling on jigs with high piece numbers
• Drill templates for assembly work on site
• Guiding twist drills and reamers in the jig
• Repair of worn drill plates by replacement of the same size

Standard and material

Dimensions and design follow DIN 179. The material is special case-hardening steel, the hardness is 740 ± 80 HV 10, and the functional surfaces are ground.