Stainless Steel Double Shaft Shredder for Animal Carcass, Bone & Meat Processing

Time:2026-04-22

Animal carcass, bone, and meat processing demands equipment that handles high bone density, variable feedstock, and strict sanitary requirements without choking on frozen blocks or corroding in blood-and-fat environments. WANROOE PNSS stainless steel double shaft shredders are engineered specifically for rendering plants, slaughterhouses, and mortality management facilities that need reliable pre-breaking before cooking, drying, or meal production.

Why choose our stainless steel double shaft shredder

WANROOE PNSS runs at 10–30 RPM with multi-thousand N·m torque per shaft, using shear and tear rather than high-speed impact. This lets you drop whole carcasses directly into the hopper without pre-cutting or thawing, and handles frozen blocks at -18°C without brittle blade failure. The alloy steel segments at HRC 55–60 tolerate bone density that destroys standard manganese steel in under 500 hours, while PLC-controlled auto-reverse with torque monitoring recovers from jams automatically. Every contact surface is 304 or 316 stainless steel — structural, not cosmetic — so corrosion from blood, brine, and fatty acids never becomes a maintenance vector.

Core Structure

Vacuum heat-treated CrNiMo alloy steel segments, HRC 55–60, bolted to hexagonal shafts. Four usable edges per segment; rotate 90° and reinstall in minutes without shaft removal. Replace only worn segments, not full blade sets.

304 stainless standard for cutting chamber, hopper, and discharge chute. 316L available for coastal or high-chloride environments. Full-penetration welded frame with CNC gantry-milled joints. No liner plates — structural stainless, HACCP-compatible.

Siemens PLC with independent torque monitoring per shaft, programmable alarm thresholds, auto-reverse on overload, and Category 1 / SIL 1 emergency stop. Optional rotary trommel screen for closed-loop oversize recirculation.

Model Selection

Model	Motor Power	Throughput	Typical Install
PNSS-500	11–15 kW	300–800 kg/h	Poultry farms, small slaughterhouses
PNSS-800	22–37 kW	1.0–2.5 t/h	Pig/sheep rendering, medium plants
PNSS-1200	55–90 kW	3.0–8.0 t/h	Cattle mortality, large rendering facilities

Key Mechanical Advantages

Low-Speed, High-Torque Operation
Dual counter-rotating shafts (50–200 rpm) deliver immense shearing force without overheating, minimizing dust and noise while maximizing energy efficiency.

Heavy-Duty Alloy Steel Blades
Forged, heat-treated, and CNC-machined blades with segmented design allow rapid replacement of worn sections without full shaft disassembly, reducing downtime.

Self-Steering Material Intake
Internal concave chamber geometry automatically guides feed into the cutting zone, preventing blow-out and ensuring uniform particle size.

PLC Intelligent Control
Automatic start/stop, overload reverse protection, and real-time power monitoring prevent jamming and optimize load distribution.

Modular Cutting Cassette
Hydraulic quick-release knife box design increases blade change efficiency by up to 80%, with split bearing housings for easy maintenance access.

Sealed, Anti-Dust Construction
Fully enclosed cutting chamber and gearbox minimize fugitive dust and noise, meeting stringent workplace safety and environmental standards.

Wide Gap Adjustability
Output particle size (30–200 mm) is precisely controlled via interchangeable screens, adaptable to metals, plastics, rubber, and mixed waste.

Planetary Gear Reducer
Compact, high-torque transmission with low backlash and superior efficiency compared to conventional gearboxes.