Collar drill bushing DIN 172 form A, bore 8 mm, length 20 mm, collar 15 mm, hardened steel

When drilling in jigs, this bushing keeps the 8 mm tool on position. The guiding length is 20 mm, the press fit measures 12 mm in diameter and the collar 15 mm.

Benefits

• Bore 8 mm, ground and dimensionally accurate to DIN 172
• Collar 15 mm with 3.0 mm height for axial location
• Outside diameter 12 mm for the press fit in the drill plate
• Case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Overall length 20 mm in the long series
• Form A to DIN 172, the bore is rounded on the collar side so the tool enters easily

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 A. In form A the bore is rounded only on the side of the collar. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.