Collar drill bushing DIN 172 form B, bore 4.9 mm, length 12 mm, collar 11 mm, hardened steel

When drilling in jigs, this bushing keeps the 4.9 mm tool on position. The guiding length is 12 mm, the press fit measures 8 mm in diameter and the collar 11 mm.

Benefits

• Overall length 12 mm in the medium series
• Bore 4.9 mm, ground and dimensionally accurate to DIN 172
• Collar 11 mm with 2.5 mm height for axial location
• Outside diameter 8 mm for the press fit in the drill plate
• Case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Form B to DIN 172, the bore is rounded on both sides and can be loaded from either end

Applications

It suits drilling jigs, drill templates and assembly fixtures in which the tool has to be guided safely over 12 mm, even with frequent tool changes.

Standard and material

The basis is DIN 172, form B, with a guiding bore of 4.9 mm. In form B the bore is rounded on the opposite side as well. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground afterwards.