Collar drill bushing DIN 172 form A, bore 12.9 mm, length 28 mm, collar 26 mm, hardened steel

Designed for tools of 12.9 mm diameter, this bushing seats in the fixture with an outside diameter of 22 mm. The overall length of 28 mm in the medium series sets the guiding length, and the 26 mm collar secures the bushing axially.

Benefits

• Bore 12.9 mm, ground and dimensionally accurate to DIN 172
• Overall length 28 mm in the medium series
• Outside diameter 22 mm for a press fit in the drill plate
• Collar 26 mm with 4.0 mm height for axial location
• Case-hardening steel hardened to 740 ± 80 HV 10
• Form A to DIN 172 with the bore 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 which the bore is rounded only on the collar side. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.