Single Chamber Designed Oil Expeller has capability to crush all kinds of seeds including palm kernel, nut cotton seeds, copra, rape seeds, sunflower, castor, canola, shianut, ground nuts, etc. The Oil Expeller is designed with cooker that includes steam kettle, mounted on the expeller for pre-heating of seeds and heavy duty gear box is used to stand radial casting gear which increases durability and efficiency of machinery. The Oil Expeller has steel made main shaft with water cooling arrangements that is used to control the temperature of chamber. The Oil Expeller has electric motors that are used to make single chamber design including reversible switch panel board to give a easy restart which occurs due to power failure/ over loading in machine. The Single Chamber Designed Oil Expeller has heavy duty construction.