powRgrip® Precision Clamping System PGR

The clamping system PGR is a mechanical tool clamping system with extremely high clamping force and excellent concentricity. The system consists of the tool holder, the high-precision collet and a compact clamping unit. The collet is pressed into the tool holder with a force of 90 kN, the maximum torque to be transferred and the holding power of the clamping system PGR are higher than those of shrink-fit chucks. In addition, PGR permits the safe clamping of very small tool diameters.

The PGR collets have a taper shank with plane contact surface and a central bore for the tool shank.

Collet and cutting tool are simply pressed into the PGR tool holder and pulled out again together after use. Press-in times of 8 seconds are possible.

The pressure fit provided by the taper creates a radial force which is concentrated on the tool shank by way of the slotted collet, and which holds the tool safely and with a high degree of concentricity.