Semi Hermetic Type Compressor can be used for all refrigerants, for air-conditioning or for medium and low temperature. The Compressor has crankcase heater that is insertion type with sleeve. The Compressor has efficient working valves, minimum dead space and has efficient, large volume motor. The Compressor is offered with water resistant drive gear, surface hardened eccentrics and crank shaft, sealed main bearing and generously sized oil pump, low friction bearing and aluminium pistons and has hard chrome plated piston rings. The Semi Hermetic Type Compressor has compact dimension that saves space and has the feature of thermal monitoring with PTC sensors.