High-speed spindles are used where the rotational speeds of a machine tool and the resulting cutting speeds are insufficient for a machining process, which is often the case for older models.

The 1:5 ratio of the BENZ high-speed spindle and the maximum speed of 40,000 rpm do more than reduce machining time—they specifically help prolong the life of the machine's main spindles. The high-speed spindle is equipped with jacket cooling as standard; it can optionally be operated with an internal coolant supply of up to 100 bar. The special bearings and sealing technology of the high-speed spindle ensure low heat generation. This guarantees dimensional accuracy for longer machining cycles. The high running smoothness and concentricity in combination with maximum spindle rigidity and low heat generation guarantee a wide range of applications for drilling and light milling operations.