Even flatter, lighter and better

The Rota-ML flex 2+2 four-jaw manual chuck from Schunk has been given a comprehensive facelift. The result: it is now flatter, lighter – and even more flexible.

With the self-centering Rota-ML flex 2+2, Schunk has had a low-maintenance manual chuck in its portfolio since 2020 that can be used to clamp almost all workpiece geometries – whether round, cubic or geometrically bulky – precisely and efficiently on mill-turning centers. Its patented drive concept has a particularly large compensation stroke of 12 mm per jaw. With the revision, Schunk has now significantly improved the manual chuck once again.

Up to 40 percent lighter

With a design facelift starting with the size with 500 millimeters diameter, the clamping technology expert reduced the chuck height by up to 30 percent. This also reduces the chuck weight by up to 40 percent. The lower mass not only enables higher table speeds, but also the reliable machining of even larger and heavier workpieces. This increases the range of possible applications with just one chuck and improves the efficiency of machining processes.

The redesigned base plate of the chuck also ensures greater flexibility. The chucks can be quickly and easily mounted on almost any machine table.

Low maintenance thanks to the sealing concept

The special seals on the guideways have been retained. They prevent grease from being washed out and the clamping force from being lost gradually. This ensures precise operation of the chuck, even at low clamping forces. A patented sealing concept protects the drive kinematics from dust and chips, thus ensuring greater process reliability and longer maintenance intervals. In addition, an indicator pin on each jaw signals the optimum clamping range for secure workpiece clamping.

Schunk offers the flexible manual chuck in eight sizes, ranging from 260 to 1200 mm in diameter.