PRESOIL hummer crusher is intended for crushing the oilcake after the primary or secondary squeezing. To provide proper and stable work of the crusher, all metallic particles should be completely removed from the oilcake. The crusher has a body with electrical motor, installed in the upper part of the machine. Inside of the machine body there is a shaft with a disc, installed on two bearings. The disk wears the crushing elements (hummers), oriented radially as the rotor turns. The output hole is situated in lower part of the machine. The crusher is assigned for use in the oil-pressing lines.