By Ron Shinn
Weima Maschinenbau GmbH expanded its W5 line of single-shaft shredders with the W5.22, designed for hard plastics, films and tear-resistant fibers.
The new model, which debuted at K 2025, has a rotor length of 86.6 inches and a rotor speed range from 50 to 200 revolutions per minute, depending on the drive configuration.
The V rotor is designed to handle large start-up lumps, hollow bins and other voluminous parts. The F rotor has a knife arrangement designed for shredding flexible materials such as fibers or film.
Maximum number of knives is 218. Available knife sizes are 40mm, 60mm and 80mm. The standard counter knives can be adjusted from outside of the cabinet.
Hopper opening is 86.6 inches by 78.7 inches.
Two other W5 shredders are smaller, the W5.14 with a 55.1-inch rotor, and the W5.18 with a 70.9-inch rotor.
The W5 series shredders use a Siemens PLC that can also control peripherals — including conveyor belts, separation technology and secondary shredders. An optional remote control is also available.
At K 2025, the W5.22 was shown with a Baumüller hydraulic drive. Since then, the drive has been upgraded to a high-torque drive that includes a servo controller. This direct-drive system was developed for demanding applications involving difficult-to-shred materials. The motor provides high torque even at low rotational speeds. Due to precise coordination between the drive and the rotor shaft, power transmission is optimally utilized. At the same time, the innovative drive concept enables energy-efficient, economical and sustainable operation, according to Weima.
A swing ram is integrated into the cutting chamber. Material falls to the rotor by gravity and is continuously or cyclically pressed against the rotor by the hydraulically moveable swing ram. There is also an available option to equip the ram with additional pressure.
The W5.22 has easy access to the rotor and cutting chamber. A built-in rear inspection flap can be opened hydraulically once the swing arm is secured in the upper position.
Contact:
Weima America Inc., Fort Mill, S.C., 803-802-7170, www.weima.com/us
