Emuge Franken PGR tool clamping system
The Emuge Franken PGR (powRgrip) is a mechanical tool clamping system that is said to offer high gripping force and concentricity.
The system consists of a toolholder, collet and clamping unit. The collet is pressed into the toolholder with a force of 90 kN. According to Emuge Franken, the maximum torque transferred and the holding power of PGR are higher than those of shrink-fit chucks. In addition, PGR permits the safe clamping of small tool diameters.
PGR collets have a taper shank with contact surface and a central bore for the tool shank. Collets and cutting tools are simply pressed into the PGR toolholder and pulled out again (together) after use. In this way, a tool can be changed within 10 seconds, says Emuge Franken. The pressure fit provided by the taper creates a radial force which is concentrated on the tool shank by way of the slotted collet.
