They are suitable for loading from high and with heavy material, as there is always material existing on the feeder. System is formed by a carriage which is produced with thick body sheets, is coated with thick wear-resistant sheet and is moving back and forth by a hydraulic piston on construction machinery carrying set of bearings which do not require maintenance or lubrication.
Material which is loaded at the back of the carriage moves forward by the forward motion of the carriage during its back and forth movement. In the meantime, material inside the hopper fills in the gap formed at the back of carriage. When the carriage moves back ; as the gap at the back is filled , the material at the front moves forward with a stroke distance.
In the primary plants ; vibrating grizzly screen is mounted between crusher and reciprocating feeder.