Universal Cylindrical Grinding Machine Grinds Versatile Workpiece Lengths

United Grinding North America Inc.’s Studer S33 offers a host of machining features, including graphical StuderPictogramming and optional fully flexible automation.


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United Grinding Studer S33 machine

Photo Credit: United Grinding

United Grinding North America’s Studer S33 CNC universal cylindrical grinding machine handles individual, small-batch, and large-scale production of short to long workpieces and it is said to grind complex workpiece geometries in a single clamping. Paired with an integrated flexLoad loader and robot, the versatile S33 provides a fully flexible solution with easy programming and reduced setup times.

According to the company, the Studer S33 changes over from grinding between centers to live spindle grinding in less than two minutes. With distances between centers of 15.7" (400 mm), 25.6" (650 mm), 40" (1,000 mm) and 63" (1,600 mm), and a center height of 6.9" (175 mm), the Studer S33 is said to be able to machine workpieces with a maximum weight of 330 lbs (150 kg). A solid Granitan S103 machine base provides stability and well-damped vibration for excellent surface finishes.

To perform straight and angular plunge grinding on one machine, says the company,  the wheelhead swivels to positions of 0, 15 and 30º, and can be equipped with a spindle motor for external grinding, as well as a high-frequency spindle for internal grinding in different configurations. The Studer S33's B-axis design features an automatic 1º Hirth coupling with a swivel range of -30º to +210º to accept up to two outer diameter (OD) grinding wheels and one inner diameter (ID) grinding spindle for complex tasks. Options include a chuck workhead for chuck applications and a C axis for thread and form grinding.

With graphical StuderPictogramming and a software design that expands with integrated modules, the Studer S33 also is said to offer easy programming. Optional StuderWIN software allows shops to program grinding and dressing cycles on an external PC.

Finally, the optional flexLoad loader with FANUC LR-Mate robot for the Studer S33 provides a fully flexible automation solution, with a large side door for easy access and a stacking method that expands through optional pallet stackers or conveyors. The flexLoad system also accepts options that include gauging, barcode scanning and a coolant-clearing air nozzle. To maintain safety, flexLoad's full-system sheet metal enclosure requires the operator's explicit permission to open its main access door and three parts drawers. A side flanged panel connects flexLoad to the S33, further enhancing safety and reducing overall cycle time by up to eight seconds over an automatic door.


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