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Rotec Tools’ gearless Rotospeed is driven by an ETEL hollow shaft torque motor. High speed capabilities to 4,000 rpm and positioning accuracies to 3" are noteworthy features of the new design. The elimination of the gear train reduces wear with virtually no backlash while exhibiting near “frictionless” motion, according to the company.
The rotary table is comprised of integrated features, such as a rigid and compact high-grade steel cast design; a Heidenhain direct positioning system; an optional 360-degree clamping mechanism; air or water-cooled circuit; and the unit is fully sealed and pressurized.
An independent Lehmann CNC control—type modulaNC3000 torque (single-axis)—is offered. The control features a specialized design for rotary table applications, free programming DIN 66025, an RS 232C interface and M-function cable. The shaft motor can be controlled by drives, such as the Siemens 611D, Heidenhain, Fanuc, Indramat and NUM.
Units are available in several sizes. The EA-800 series is formulated for high speed (4,000 rpm) and low torque, whereas the EA-700 series is suited for speeds as high as 1,400 rpm and heavy torque applications.
Turning operations on machining centers, cylindrical or surface grinding operations and high speed uses for the watch making, medical or micro industries are applications for which the product is suited.
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