Premium quality manganese steel made hammer mills are used for effective crushing of large rock by delivering consistent blow of hammer. These ore crushing systems are used as the cost effective substitute of ball mills during quarrying of valuable metals like gold, tin and tungsten. These low investment hammer mills are equipped with grate bars or perforated screen based opening, high speed rotor and easy to set grinding plate. Forged alloy steel made shaft has been incorporated into the design of this product range to minimize its vibration level and also to extend service life of its bearing. This range of rock or aggregate crushing mill is accessible in different rotor configuration based choices.