Precision Internal and External Grinding in a Single Platform
Part of their "Classic Line," EMAG's UG Series -- now available in North America -- offers a universal cylindrical grinding platform for manufacturers needing to jump between internal, external, and out-of-round applications without the logistical headache of maintaining multiple specialized machines.
The series is built around four distinct models: the UG 400, 630, 1000, and 1500. The naming convention is straightforward, reflecting the maximum grinding length in millimeters. This range ensures that whether a plant is focusing on small, intricate toolmaking or substantial industrial components for the aerospace and automotive sectors, there is a footprint that fits the workflow.
Engineering Out the Vibration
At the heart of the UG series is a move away from traditional mechanical limitations. EMAG has replaced conventional belt-driven systems with direct-drive motorized spindles. It's a design choice that pays dividends in two areas: power and purity. By eliminating belts, you remove a notorious source of vibration and mechanical power loss.
With 11 kilowatts of power and peripheral wheel speeds reaching 50 meters per second, the machines maintain the aggressive material removal rates needed for production-grade work while keeping the "chatter" of the machine to an absolute minimum.
Precision Through the B-Axis
Flexibility is driven by the automatically swiveling B-axis. With an infinitely variable positioning range from -15° to +225°, the grinding head can be repositioned 180° in just eight seconds.
For operators, the resolution is where the magic happens; at 0.0001° resolution and a repeatability of ±2 arc seconds, the machine handles complex geometries with a level of surgical precision that is usually reserved for much higher-priced, dedicated platforms.
A Solid Foundation
Accuracy isn't just about the software or the spindles; it's about the "bones" of the machine. The workhead utilizes precision tapered roller bearings to ensure high rigidity, allowing the series to achieve a concentricity accuracy of 0.5 microns. Controlled by the industry-standard Fanuc system, the UG series feels familiar to most operators while offering the sophisticated feedback loops necessary for high-tolerance grinding.
Ultimately, the UG Series isn't just about selling a grinder; it's about providing a flexible entry point into the EMAG ecosystem. For North American manufacturers looking to tighten their tolerances without bloating their floor space, these machines offer a "Swiss Army Knife" approach to the demanding world of cylindrical grinding.
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