New Machinery

New Shredder fitted to STI Series 2000 Disposal Unit on Monday 20th January as part of an planned improvement

The Untha RS40 will render the waste unrecognisable and is the world’s latest industrial shredders for medical waste. The installation replaces the previous shredder which had been in service for 5500 hours and had given reliable service.

The installation was completed using Sweeny Todd staff , and local engineers from SAVA ENGINEERING, North Shore. Overseeing the project was Project Manager Owen Diefenbach from WASTE INITIATIVE, Queensland.

High torque 4 shaft shear type shredder
Four shaft shredders are designed for rugged and continuous use. The cutting chamber is self-cleaning as each cutter cleans between the other. The four shafts help grab bulky objects and regurgitate the waste until it is fine enough to fall through a sizing screen. Different screens can be installed to give different size results. These screens can easily be removed from the shredder, for easy maintenance. The Shredder is driven by two motors, which have Star Delta Start, and controlled by a torque limit system with reversion control unit. Each motor drives two shafts, which can independently reverse when coming under heavy loads. This feature helps reposition the waste for further shredding, and it also enables it to reverse out of any situation.

High torque, low speed cutters (23rpm) - result in low noise and low maintenance. Forged tool steel, hardened cutters have 19mm cutting width, but the spacers and cutters are forged in one piece giving the cutter a 38mm base for maximum torque per cutter. 29mm, 38mm and 50mm cutters are also available. These industrial models have special bulkhead walls (for extra bearing protection), labyrinth seals, triple bearings per shaft and stainless steel shaft/bearing protection for longer life and lower maintenance.