Cylindrical drill bush DIN 179 form A, bore 20.5 mm, length 20 mm, outside dia 30 mm

This drill bush guides tools of 20.5 mm diameter and keeps the drilling axis in position over the full length of 20 mm. The bore follows form A of DIN 179 and is therefore rounded on one side.

Benefits

• Guide bore of 20.5 mm to DIN 179 for the matching tool
• Overall length of 20 mm in the short version of the range short, medium and long
• Bore rounded on one side to form A, with a fixed fitting direction in the jig
• Wall thickness of 4.8 mm between the 20.5 mm bore and the 30 mm seat
• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground

Applications

• Drilling jigs and drill templates in series production
• Jig and tool making
• Repeatable hole patterns in sheet metal, profiles and housings
• Maintenance work where hole patterns are reworked

Standard and material

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