Patent ID: 8540465

Claim:
A tool for machining workpieces comprising a shank and a cutting part, wherein the cutting part has at least one cutting edge portion defining the nominal diameter of the tool or at least one insert seat for a cutting insert having a cutting edge portion defining the nominal diameter of the tool, wherein the tool has an axis of rotation about which the tool rotates in the operably mounted condition, wherein the tool has at least one further axially extending portion which is arranged in the axial direction outside the cutting edge portion defining the nominal diameter and within which in a plane perpendicular to the axis of rotation there are provided at least two peripheral portions which are arranged in mutually diametrally opposite relationship in relation to the axis of rotation so that a reference diameter is formed, wherein the reference diameter is equal to the nominal diameter of the tool, wherein in the region of the shank it has a portion for the tool to be received in a standardized tool holder of a machine, wherein the diameter of the receiving portion is different from the nominal diameter of the tool, and wherein the axially extending portion is offset with respect to the rest of the tool, and wherein the regions of the tool which adjoin the axially extending portion with the reference diameter are of a different diameter from the reference diameter.