Drives and hydraulic aggregates are also used in explosive areas in machine construction or raw material production. In hydraulic systems oil transfers power and motion, in drives, it’s a vital lubricant. Both as a power transfer medium and lubricant oil is heated by friction losses during operation. Oil/ air coolers stabilize the temperature and are indispensable for systems and drives for consistent power. The temperature further affects the aging behavior and the life of oils. BLK ATEX 3GD series coolers are suitable for use in zones 2 (gas) and 22 (dust) and temperature class 3. In addition to adequately protected drive motors, they have stainless steel fan housings. Efficient cooling matrixes, an easy to maintain design, and noise-optimized fans are additional features of the BLK ATEX series.