Just 4 holder sizes cover a range from 5 mm to 66 mm (up to 85 mm available on request). Counterbores and solid pilots can be combined as required within one size, the solid pilot can be changed without removing the counterbore.
Hardened and ground. Counterbore and pilot are clamped by one screw each, the counterbore is additionally protected against turning by means of a pin.
For DIN counterbores, as well as with appropriate pilot / counterbore combinations for stepped holes or non-standard counterbores.
For stepped through holes pilots are available ex works in 2 lengths so that these holes can be produced without a separate pilot hole drilling operation.
Counterbores with TiN coating available on request. The carbide version is specially recommended for machining grey cast iron, brass and chrome-nickel steels.