Kollmorgen (Radford, VA) has introduced MMG series linear motor stages in four models that deliver 25-mm, 50-mm, 100-mm, and 150-mm travel. They provide uncompensated accuracy from 6 um to 14 um, and resolution from 1.0 um to 5 nm. Each model delivers repeatability to ±0.4 um, and is rated for 10-kg load capacity. The stages feature an integrated feedback mechanism that eliminates the need for compensation tables or slope correction factors. A standard Z-axis counterbalance kit eliminates the engineering required to integrate a Z option. The stages leverage a standard 3-phase brushless motor to enable control with various drives and controllers. No specialized piezo or proprietary motor/drive technology is necessary. They can be used in constant velocity (CV) or high throughput point-to-point applications, allowing common units to be used.
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