Zerma ZSS Shredder

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  • Zerma ZSS Shredder
  • Zerma ZSS E-style rotor with bolted knife holders



Designed for a wide range of applications

General Description

The ZSS shredders are single shaft shredders with a powerful two speed swing ram design eliminating the risk of blocking and wearing out of internal guide rails. The machine is very versatile and can be used for shredding of all kinds of input materials and is well suited for different industries.The 457 mm diameter rotors ranging form 850 to 2000 mm width are driven by one or two oversized gearboxes. The hydraulic power pack is well integrated into the machine housing to save space and protect it from damage but still easy to access or remove for maintenance.The standard E rotor features the proven ZERMA knife and knife holder design, as well as outboard bearings and a hydraulically operated screen cradle.The machines can be tailored to various applications with cooling or hard facing and other wear options


The ZSS shredders have been designed for a wide array of applications and industries like in house and general recycling, electronic waste and post consumer waste handling. Input materials can be all kinds of plastics like lumps, pipes, film, woven bags; electronic waste like cables and ICBs, paper, wood and other organic materials.Depending on input material and the following process the shredded material as defined by the used screen size can be directly used or go into the next step of size reduction for example in a GSH granulator


  • Low speed, high torque gear drive
  • Powerful hydraulic swing type pusher
  • Proven well engineered design
  • smaller footprint compared to traditional shredders with horizontal pushers
  • bolted in drive shafts
  • multiple rotor designs and materials
  • Two speed hydraulic comes standard


The shredders use concave ground square knives, producing high quality output. The cutters can be turned after a side is worn out.
All ZERMA shredders are equipped with a large diameter flat rotor. The knives are fixed in special knife holders fitted in machined pockets. Optional weld on hard facing is available for abrasive applications.
The ZSS series shredders benefit from sturdy ram construction incorporating heavy duty guide bearings and universal couplings for reliable operation.