Primary Shredder

The Heavy-Duty First-Stage Reduction System

Primary shredders serve as the initial size reduction stage in tire recycling operations, specifically engineered to process whole tires into 50-150mm rubber chips. These rugged machines combine massive cutting power with specialized tooling to handle the challenging properties of steel-belted radial tires and other complex tire constructions.

Engineered for Extreme Tire Processing

Constructed with a reinforced steel frame and dual-shaft cutting system, the primary shredder features staggered rotor-mounted cutters that intermesh with stationary bed knives. The cutting chamber incorporates wear-resistant AR500 steel liners and tungsten carbide-tipped tools capable of processing up to 10,000 passenger tires per day. Hydraulic motor drives deliver 500-2,000 hp of torque for continuous operation under maximum load conditions.

Specialized Cutting Technology

The shredder employs a unique shear-and-tear action that efficiently processes both rubber components and steel reinforcement. Angled cutting teeth (45-60 degree attack angle) progressively engage the tire material while self-cleaning cutter designs prevent steel wire wrapping. The counter-rotating shafts operate at 30-60 RPM to generate tremendous cutting force without excessive heat buildup.

Operational Features

During operation, the system automatically adjusts feed rates based on motor load to maintain optimal throughput. Integrated metal detectors identify wheel rims and other non-tire materials before they enter the cutting chamber. The discharge grate ensures consistent output sizing while allowing steel wire fragments to pass through for subsequent separation. Water spray systems control dust and reduce friction during processing.

Maintenance for Continuous Production

Daily inspection of cutting edges identifies wear patterns requiring rotation or replacement. Weekly lubrication of all bearings prevents premature failure. Monthly alignment checks ensure proper cutter clearance (typically 1-2mm). The hydraulic system requires quarterly fluid analysis and filter replacement. Advanced models feature automatic tool wear monitoring that predicts maintenance needs.

Output Characteristics

The primary shredder produces cleanly cut rubber chips with minimal fines generation. The 50-150mm output size is ideal for secondary granulation while allowing efficient steel wire liberation. Output typically contains less than 0.5% residual fiber content, with steel wire segments mostly straightened for easier magnetic separation.