Oil compressors have a much wider scope of application. First of all, they differ in the fact that oil should be poured into the drive crankcase. There are such compressors, both with direct and belt drive. Models with a belt drive are considered more reliable and repair is much easier. It is also worth noting that the electric motor in equipment with a belt drive rotates at a lower speed, and this significantly reduces the load of the main mechanisms and connection. Air cooling system is much more effective.