HOLLOW SHANK TAPER

About this product

The hollow shank taper has been established as the modern interface between machine and tool, and is characterized by the following advantages:

Smaller (approx. 30 %) and lighter (approx. 50 %) than the steep taper

Easier and faster tool change as a result

High stiffness due to support on the tool holder via the collar

Transfer of torque

Frictionally via the taper and contact surface

Positive-locking via the driver grooves

Jerking loads and large torque can be transferred via positive lock by drivers.

Exceptional changeover precision (3 μm), since

Axial positioning precision is given by the planar contact on the collar

Concentricity deviations are minimized by the tight taper tolerance

Suitable for high speeds, since problems resulting from expansion of the spindle, as are present with the steep taper, do not occur; 2 reasons:

The hollow shank taper expands at the same or greater dimension as the spindle due to centrifugal force (produces a clamping force increase)

The planar contact prevents slipping in the axial direction.