SSI Shredding Systems / Shredding Systems Inc. — Industrial Shredders & Sizing Systems
Global industrial equipment selection and technical sourcing for SSI Shredding Systems / Shredding Systems Inc. (Wilsonville, Oregon, USA). Heavy-duty series Dual-Shear, Quad with internal sizing screens, Uni-Shear single-rotor, and PRI-MAX primary reducers from SpareX.
Industrial Two-Shaft Shredders Dual-Shear M-Series
Dual-Shear M-series low-speed two-shaft shredders deliver high torque primary reduction for municipal solid waste, scrap metal, tires, and polymers. Models ranging from M45 up to M180 feature drives from 50 to 400 HP. Counter-rotating alloy shafts shear bulk feedstock into uniform strips.
- Spacious M100 cutting chamber measuring 1040x1600 mm for high volume bulky feeds
- Flexible electric motor or heavy duty hydraulic drive rated between 50 and 400 HP
- Durable disk cutters with thickness ranging from 38 to 76 mm made from tool alloy
- Patented ACLS pre-load hub assembly providing clamping force up to 45,000 kg
Industrial Four-Shaft Sizing Shredders Quad Q-Series
Quad Q-series four-shaft machines combine primary shearing with single-pass particle screening. Units spanning Q55 to Q145 incorporate removable semicircular sizing screens from 20 to 150 mm. Oversized fragments are automatically recirculated by the four shafts for secondary cut.
- Interchangeable sizing screens featuring perforated openings between 20 and 150 mm
- Four synchronized forged alloy shafts operating along independent cutting paths
- High volume feed hopper engineered with automated overload torque protection
- Consistent particle sizing for refuse derived fuel preparation and e-scrap sorting
Industrial Single-Shaft Rotary Grinders Uni-Shear SR-Series
Uni-Shear SR-series single-shaft grinders achieve fine secondary sizing of polymers, textiles, copper cables, and automobile shredder residue. Models SR400 and SR500 employ a horizontal hydraulic ram that pushes bulk feedstock against a heavy profile rotary drum with indexing blades.
- Solid alloy rotor with 400 to 500 mm diameter rotating smoothly under load
- Four-way indexable square cutter inserts manufactured from hardened tool alloy
- Load-sensing hydraulic pusher ram maintaining constant pressure on feedstock
- Heavy bottom classification screen with mesh dimensions ranging from 12 to 203 mm
Heavy-Duty Primary Waste Reducers PRI-MAX PR-Series
PRI-MAX models PR4200 and PR4400 process unsorted municipal solid waste, construction debris, and bulky scrap. An open shredding table equipped with aggressive ripping teeth tears through compressed bales, appliances, and structural timber at production rates reaching 80 tons per hour.
- High volume throughput capacity processing between 20 and 80 tons per hour
- Hydrostatic dual-shaft drive system delivering from 300 to 500 total horsepower
- Patented cartridge table layout allowing rapid swap without removing fluid lines
- Powerful piercing teeth tearing dense baled waste, wood skids, and bulky metals
Replacement Cutter Stacks & Patented ACLS Locking System
The patented ACLS hub eliminates shaft threads while securing cutters and spacers against loosening. A segmented locking assembly applies 100,000 lbs (45,000 kg) of axial clamping force to the stack. Routine hardfacing reconditioning restores cutting edge geometry and extends working life.
- Axial stack clamping force reaching 45,000 kg via segmented heavy lock rings
- Elimination of shaft threading removes fatigue stress risers along rotor shafts
- Shear cutter disks protected by automated hardfacing alloy weld depositions
- Precision ground spacer rings maintaining consistent intermeshing cutter gaps
Chamber Bearing Protection, Labyrinth Seals & Drive Units
SSI cutting chambers integrate false end splash plates that isolate shaft support bearings from shredded debris. An open-bottom drop space purges stray particles before they reach the seals. Smart automation monitors circuit hydraulic pressure and triggers instant shaft reversals during jams.
- False end splash plates with open drop zones purging abrasive dust and grit
- Round hookless cutters running along chamber end plates avoiding wall contact
- Multi-stage labyrinth and fluoropolymer barrier seals safeguarding bearings
- Automated PLC reversal monitoring current and fluid pressure to clear blockages
Industrial Shredder Fleet by SSI Shredding Systems
American manufacturer SSI Shredding Systems (Shredding Systems Inc., Wilsonville, Oregon) designs and manufactures heavy-duty, low-speed, high-torque industrial shredders for processing municipal solid waste, metals, plastics, tires, and automotive shredder residue.
The equipment portfolio spans Dual-Shear M-series two-shaft shear shredders, Quad Q-series four-shaft machines with internal sizing screens, Uni-Shear SR-series single-shaft rotary grinders, and high-volume PRI-MAX PR-series primary reducers.
Every unit features solid forged shafts, patented ACLS hub locking assemblies delivering 100,000 lbs (45,000 kg) of axial clamping force, and false end splash plates that isolate bearings and seals from abrasive dust.
Equipment throughput spans from 5 up to 80 tons per hour in harsh recycling environments.
Technical Sizing Criteria and Equipment Selection
Selecting the proper SSI shredder configuration depends on incoming material bulk density, infeed dimensions, and downstream particle size requirements.
For bulky solid waste, wooden pallets, and demolition debris, PRI-MAX open table reducers and Dual-Shear two-shaft units deliver rapid volume reduction.
When uniform output sizing from 20 to 50 mm is required in a single pass without external trommels, Quad four-shaft shredders recirculate oversized pieces automatically.
For uniform secondary sizing of plastic containers, synthetic fibers, and copper wire, Uni-Shear single-rotor machines with hydraulic ram feeding provide controlled processing.
SpareX engineers assist global clients with feedstock evaluation, shaft torque sizing, cutter tooth profile selection, and motor power planning.
SSI Shredding Systems and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of SSI Shredding Systems and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.
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Documents and sources
- SSI Shredding Systems company profile — four decades of industrial shredder manufacturing
- SSI shredding technologies — patented ACLS cutter locking and seal protection
- Dual-Shear two-shaft industrial shredders M-series — cutting chambers and drive configurations
- Quad four-shaft industrial shredders with internal screens — uniform sizing down to 20 mm
- Cutter rebuild and hardfacing services — restoring cutter geometry and edge durability
- SSI shredder parts and service program — components and diagnostics support
- Automotive shredder residue and plastics recycling case — SSI shredders at MATEC Japan
