Drill bush DIN 179 form B, medium type, bore 21.5 mm, length 36 mm, outside dia 30 mm

This drill bush guides tools of 21.5 mm diameter and keeps the drilling axis in position over the full length of 36 mm. The bore follows form B of DIN 179 and is therefore rounded on both sides.

Benefits

• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Guide bore of 21.5 mm to DIN 179 for the matching tool
• Outside diameter of 30 mm as a ground seat in the drill plate
• Bore rounded on both sides to form B, so the bush can be fitted either way round
• Dimensions to DIN 179, so existing bushes can be replaced size for size

Applications

• Hole patterns in assembly jigs and equipment frames
• Workshop production with changing workpieces
• Redrilling and opening up holes on existing jigs
• Pattern making and mould making

Standard and material

The basis is DIN 179 for cylindrical drill bushes. Form B means a bore that is rounded on both sides. Made of special case-hardening steel, hardened to 740 ± 80 HV 10 and ground.