When it comes to selecting shredders, the benefits of a slow-speed, high-torque rotary shear shredder are considerable. Slow-speed shredders offer distinct advantages over high-speed technologies: improved safety; less vibration, dust and noise; lower operating costs; a wider range of material processing; and, greater reliability.
Slow speed shredders are known to be versatile and dependable. They efficiently reduce large, bulky materials to a manageable size and provide shock load protection, which minimizes damage from processing difficult materials.
Specific aspects to consider when choosing a shredder are the size, density and volume of the materials to be processed. The intended feed method and material sizes play a crucial role in determining the requirements of the machine, such as the type of drive (electrical or hydraulic), cutter, screen and shaft design.
Pay close attention to construction features and performance specifications. The horsepower is not always a good indication of overall performance and reliability. More accurate indicators are, for example, large shaft and cutter diameters, which are indications of longevity and reliability. It’s also important to have appropriate shaft torque and cutter tip force for material processing — more is not necessarily better.
Also, look for advanced technologies such as the patented Advanced Cutter Locking System (ACLS) offered by SSI Shredding Systems, Inc. of Wilsonville, Oregon, which ensures a tight cutter stack and reduces machine maintenance.
Companies like SSI specialize in tailoring shredders based on specific processing goals. Experienced manufacturers generally also offer complete in-house testing, design and manufacturing.
To realize the successful purchase of a slow-speed shredder, one should choose a reputable supplier with extensive applications experience that can point to successful installations that are similar to your own needs. The supplier should offer not only quality machinery and components, but also 24-hour technical support and a well-stocked parts inventory.
Cathey Armillas is marketing coordinator for SSI Shredding Systems, Inc., based in Wilsonville, Oregon.