To provide an apparatus for supplying a molding material to a crusher in which the elevating and lowering of pressing rollers can smoothly guided while effectively preventing the apparatus from being broken caused by the load of the pressing rollers.

This apparatus is provided with the rotatable and elevatable pressing rollers 5A, 5B above a carrying conveyer carrying the molding material to be crushed, roughly crushes the molding material by elevating and lowering the pressing rollers while rotating them, and supplies the roughly crushed molding material to the crusher. The supply device 1 is provided with bearing parts 14A, 14B rotatably supporting shafts 13A, 13B of the pressing rollers; height adjusting means (air cylinders) 15a, 15B adjusting the height positions of the pressing rollers via the bearing parts; and an elevating/lowering guide means guiding elevating and lowering of the pressing rollers when elevating and lowering the pressing rollers. The elevating/lowering guide means comprises at least a pair of guide rollers set on both sides of the bearing parts, and a pair of guide posts 21 having turnably engaging guide rails.