Drill bush DIN 179 form B, long type, bore 12.1 mm, length 36 mm, outside dia 22 mm

A drill of 12.1 mm diameter runs guided through 36 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

• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Guide bore of 12.1 mm to DIN 179 for the matching tool
• Outside diameter of 22 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

• Fixed drill plates and hinged drilling jigs
• One-off and small batch production in mechanical engineering
• Drilling fitted holes on assemblies with a fixed hole position
• Inspection and marking templates in assembly

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.