M004 Series in-Line planetary gear, multi-vane air motor. Will not burn out: Air motors can be stalled or overloaded for long periods without damage. Great for harsh environments: No heat build up or sparks make air motors ideal for use in flammable or explosive applications. Cool Running: A running air motor expands air, allowing motors to operate in temperatures up to 150°F and some motors up to 300°F with special grease, lube and seals. Compact and Portable: Get maximum horsepower in minimum size. Minimum maintenance: Our motors have a proven history of long, low maintenance life. All you need to provide is a clean, dry, lubricated air supply. No shock starts: Air cushioned start-up cuts stress to your equipment.