Universal Grinding Machines for Precision Internal, External, and Out-of-round Applications
EMAG LLC, the North American subsidiary of EMAG Group, announced the availability of the UG Series grinding machines for the U.S. and Canadian markets. The UG Series grinding machines are designed for manufacturers that 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.
Direct-Drive Spindle Technology
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.
Work Head, Concentricity, and Internal Grinding
Precision tapered roller bearings in the work head 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.
Tailstock and Dressing
The tailstock uses a precision-mounted quill 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.
Control and Turnkey Capability
The UG Series standard control is the FANUC 0i-TF Plus with dialog-oriented HMI for simplified operation. FANUC’s global service availability is a practical advantage for U.S.-based manufacturers managing maintenance and spare parts logistics.
EMAG offers turnkey packages for the UG Series grinding machines that include the machine, NC program, grinding tools, coolant, and workholding technology.
The customer receives a production-ready solution from a single source.
Service and Support
EMAG LLC provides U.S. and Canadian sales, applications, engineering, and service support from its Farmington Hills, Michigan location. EMAG’s global service network covers more than 30 locations across Europe, North and South America, and Asia, with all technicians accessing a shared knowledge pool for consistent support outcomes worldwide.
About EMAG LLC
EMAG LLC is the North American subsidiary of EMAG Group, headquartered in Salach, Germany — a technology leader in metalworking with more than 150 years of history and over 30 locations worldwide. EMAG develops and manufactures turning, grinding, gear cutting, laser welding, and ECM machining systems. EMAG LLC serves U.S. and Canadian customers from its facility in Farmington Hills, Michigan.
