The Sullair 250031-586 coupling is a part used primarily on Sullair air compressors. This coupling ensures an efficient connection between the motor and compressor, helping to minimize wear on internal components and absorb possible misalignments in the system. It is a part, specifically designed to ensure optimum performance of Sullair compressors and other industrial equipment, such as John Deere and Kaeser models, Sullair Air Compressor Coupling Replacement - 250031-586.