HOS Heavy-Duty Pipe Shredders from Herbold smoothly and efficiently reduce large, thick-walled, plastic pipes to chips approximately 2.4 to 3.9 inches square. Available in five sizes, the shredders can process up to about 3,400 lbs. per hour and can handle pipes as large as 9.8 ft. in diameter. A high-torque hydraulic ram holds a horizontally oriented pipe against a moving cutting plate studded with blades. As the vertical cutting plate travels back and forth across the end of the pipe, it slices off chips. The chips fall onto a conveyor belt, which can transport them to a cutting mill for further size reduction. The grater-like design means the blades of an HOS Shredder wear much more slowly than those of a typical heavy-duty pipe granulator, and the unit uses less energy and requires less maintenance. HOS Shredders are even suitable for abrasive materials, such as fiberglass-reinforced piping. They produce little noise, and each model is equipped with a covered feed trough.