Drill bush DIN 179 form B, medium type, bore 20 mm, length 36 mm, outside dia 30 mm

For repeatable holes of 20 mm diameter this bush is seated in the drill plate by its ground outside diameter of 30 mm. The drill stays guided across 36 mm of length, and the bore is rounded on both sides.

Benefits

• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Guide bore of 20 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.