The Toprun from D'Andrea is a balanceable toolholder for high speed. The tool is designed to update the distribution of the body masses, which will be able to rotate without creating centrifugal forces above a suggested limit. The device offers considerable extension of machining center spindle and extension tool life.
This equipment is capable of machining up to 8,000 rpm, which is acceptable for positioning the counterweights at 0° and at 180°. In addition, the Toprun has the balancing operation, which reduces the original toolholder unbalance “U” within the maximum admissible level “G”. This toolholder allows a quick, easy and accurate achievement of high balancing within 0.5 kg, without any need to remove or add material.