EMAG LLC, the North American subsidiary of EMAG Group (Salach, Germany), announced the availability of the UG Series universal cylindrical grinding machines, for the U.S. and Canadian markets. The series is designed for manufacturers who require flexible, high-precision grinding across internal, external, and out-of-round applications without investing in separate dedicated machine platforms.
The UG Series includes four models – UG 400, UG 630, UG 1000, and UG 1500 – with grinding lengths corresponding to 400, 630, 1,000, and 1,500 millimeters respectively. The series features multiple grinding wheel configurations tailored to job shops, precision component manufacturers, toolmakers, and production facilities serving the automotive, aerospace, and industrial supply chains.
The grinding head on each UG Series machine is equipped with direct-drive motorized spindles rated at up to 11 kilowatts. The elimination of belt drive removes a primary source of vibration and mechanical power loss in conventional cylindrical grinding systems. Peripheral grinding wheel speed reaches 50 meters per second.
An automatically swiveling B-axis enables infinitely variable positioning between -15° and +225°, with 0.0001° resolution and ±2 arc seconds positioning repeatability. Swivel time for a 180° repositioning is 8 seconds across all four models.
Precision tapered roller bearings in the workhead provide the rigidity required to achieve concentricity accuracy of 0.5 micrometers on the test workpiece. The workpiece spindle uses direct drive with stepless speed control from 30 to 800 RPM. A swivel range from 0° to +30° supports cone grinding strategies. High-frequency internal grinding spindles cover a speed range of 20,000 to 125,000 RPM with oil-air lubrication on the UG 400, UG 630 and UG 1000.
An optional C-axis workpiece spindle enables out-of-round and thread grinding through synchronized motion between workpiece rotation and grinding spindle feed, requiring the FANUC 31iB Plus control.
The tailstock uses a precision-mounted quill (60 mm diameter, MK4 taper; 65 mm on UG 1500) with micro taper correction of ±40 µm for concentricity under one micrometer. Manual or hydraulic actuation options are available. Three dressing configurations are supported: a repositionable table-mounted swivel arm dresser, a workpiece spindle dresser system for automated batch production cycles, and dressing tile holders for supplemental or manual dressing.
More info www.emag.com
