The Kaeser Compressors SM Series Rotary Screw Compressors are designed to reduce energy costs, improve overall performance and extend service life. The SIGMA 06 airend offers an increased intake capacity, and the IE4 motors on the 10 and 15 hp models deliver up to 10 percent more flow than the company's previous versions, the company says. The update also includes a dual-flow fan with an external facing cooler, offering approach temperatures as low as 7 degrees F. The SM series is available in 7.5 to 15 hp models, with flows from 19 to 55 cfm and pressures up to 217 psig.