Studer S121Click image to enlarge

United Grinding has added three new radius internal cylindrical grinding machines to its line of Studer internal cylindrical grinding machines: the S121, S131 and S141.

Studer S131Click image to enlarge

Studer S141Click image to enlarge

The new machines replace Studer's CT700 and CT900 models and extend part production capabilities by offering more advanced technology, a new dressing concept and larger size machine to handle a broader range of workpieces.

With a workhead on a newly arranged simultaneously swiveling B axis, the S121, S131 and S141 radius grinding machines offer greater thermal stability, mechanical rigidity and interpolation from -60° to +90°. The machines are also equipped with a dressing spindle or a fixed dresser on the B-axis and a measuring probe on the grinding head.

The new machines feature Granitan machine beds which provide higher damping levels, thermal stability and guidance accuracy. The StuderGuide guideway and drive system with linear motors provide high wear resistance, a long working life and high dynamics. It also includes X and Z axes in a cross-slide arrangement as well as a cross slide, which in the case of the S121 can take one spindle, two spindles in parallel or two spindles on a hydraulic turret. In the S131 and S141 machines, the cross slide comes with a four-position turret with direct drive. The spindles on the radius grinding machines are arranged at the rear of the turret.

Each of the three radius internal cylindrical grinding machines is powered by StuderSIM software that enables an operator to machine complex parts – often in a single clamping. StuderSIM derives workpieces from a drawing and completely defines and generates all necessary geometric data for the grinding cycles. Operators can easily check and visualize the grinding process through simulation on a PC or on the machine.

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