Drill bush DIN 179 form B, short type, bore 28 mm, length 25 mm, outside dia 42 mm

During drilling in the jig this bush takes over the guidance of the 28 mm tool. The overall length of 25 mm sets the bearing surface of the drill in the short version, and the bore matches form B of DIN 179.

Benefits

• Overall length of 25 mm in the short version of the range short, medium and long
• Guide bore of 28 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

• 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

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.