Collar drill bushing DIN 172 form B, bore 11 mm, length 20 mm, collar 22 mm, hardened steel

With a ground bore of 11 mm this bushing holds the tool on position over a guiding section of 20 mm. The collar of 22 mm diameter and 4.0 mm height stops the bushing from travelling through the fixture while drilling.

Benefits

• Bore 11 mm, ground and dimensionally accurate to DIN 172
• Overall length 20 mm in the medium series
• Outside diameter 18 mm for a press fit in the drill plate
• Collar 22 mm with 4.0 mm height for axial location
• Case-hardening steel hardened to 740 ± 80 HV 10
• Form B to DIN 172 with the bore rounded on both sides, so the bushing can be used from either end

Applications

The bushing is used in drilling jigs in tool and fixture making, in series production and in repair work where holes have to be placed repeatably.

Standard and material

The design complies with DIN 172 form B, in which the bore is rounded on both sides. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.