Drill bush DIN 179 form B, bore 21.5 mm, length 45 mm, outside dia 30 mm, hardened steel

For repeatable holes of 21.5 mm diameter this bush is seated in the drill plate by its ground outside diameter of 30 mm. The drill stays guided across 45 mm of length, and the bore is rounded on both sides.

Benefits

• Bore rounded on both sides to form B, so the bush can be fitted either way round
• Overall length of 45 mm in the long version of the range short, medium and long
• Guide bore of 21.5 mm to DIN 179 for the matching tool
• Dimensions to DIN 179, so existing bushes can be replaced size for size
• Outside diameter of 30 mm as a ground seat in the drill plate

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

The design corresponds to DIN 179, form B. Case-hardening steel at 740 ± 80 HV 10 together with ground surfaces determines the service life of the bush.