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Stainless Steel Double Shaft Shredder for Bones Meat Animals
Slaughterhouses, food processing plants, livestock farms, and animal disposal centers all face the difficult challenge of handling bones, meat, and animal waste. The stainless steel double shaft shredder, with its powerful shearing force and corrosion resistance, has become the core equipment in this field. This article explains the product’s features, working principle, applications, and key benefits
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ＸWhat is a Stainless Steel Double Shaft Shredder?
A stainless steel double shaft shredder is a crushing machine that uses two counter-rotating cutter shafts. The blades and key material-contact parts are made of 304 or 316 stainless steel. It is specially designed for high-moisture, high-fat, high-salt materials (e.g., fresh bones, frozen meat, animal viscera, whole animal carcasses) to reduce their volume and break them down.
Compared with traditional carbon steel shredders, the stainless steel model offers excellent corrosion resistance, easy cleaning, and non-contamination – fully complying with food hygiene and animal disposal regulations.
Role of the Double Shaft Shredder
| 1.Volume reduction | Crushes large bones and whole animals into 20–50 mm pieces, facilitating transport, cooking, pressing, or fermentation. |
| 2.Destroys tissue structure | Breaks bones and fibers, improving efficiency in subsequent fat extraction, meat-and-bone meal production, or biogas generation. |
| 3.Prevents clogging | Low-speed, high-torque design easily handles tendons, meat, and mixed soft/hard materials. |
Working Principle
The two shafts carry interlocking alloy steel cutters. Driven by a hydraulic or electric motor, they generate shear, tear, and compression forces simultaneously. Even a whole beef leg bone can be crushed in seconds.
Stainless Steel Double Shaft Shredder Applications
| Industry | Specific Use |
| Slaughtering & meat processing | Crush pork/beef bones, chicken frames, frozen meat blocks, lymph nodes, fat residue |
| Dead animal disposal | Pre-crush whole pigs, sheep, poultry for rendering or drying |
| Food waste treatment | Shred bones, shells, tough skin from kitchen waste |
| Pet food production | Pre-crush fresh bones and meat for further grinding |
| Biodiesel / fat rendering | Break down animal fat and sinew to increase oil yield |
Five Key Advantages of a Stainless Steel Double Shaft Shredder
| Corrosion resistant, long service life | The stainless steel body and cutting chamber resist erosion from animal fat, blood, and acid/alkaline disinfectants. No rust contamination – service life up to 8–10 years. |
| High hygiene standards, easy to clean | Smooth surfaces with no dead corners. Can be washed with high-pressure water and steam – meets HACCP and GMP food‑grade requirements. |
| Strong processing capacity, no jamming | Low-speed, high-torque design handles frozen bone (down to -10°C) and meat with bones continuously. Auto‑reverse removes obstructions when overloaded. |
| Uniform output, adjustable particle size | By changing the screen mesh or adjusting cutter gap, output size can be set from 10–80 mm to suit different downstream processes. |
| Highly automated, safe & reliable | Features overload protection, emergency stop, forward/reverse control. Optional hydraulic pusher reduces manual labor and operating risks. |
Conclusion
The stainless steel double shaft shredder for bones, meat, and animals is an essential pre‑treatment device for modern organic solid waste. It solves the problems of rusting, jamming, and material contamination found in traditional equipment, while its high shear efficiency improves resource recovery. Whether for producing meat-and-bone meal, rendering industrial fat, or disposing of dead animals, this machine offers a stable, hygienic, and cost-effective solution.
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| Model | Shredder Motor Power | Shredding Chamber Size |
| PNSS-300 | 5.5 | 510×300 |
| PNSS-400 | 7.5 | 510×400 |
| PNSS-600 | 7.5+7.5 | 510×600 |
| PNSS-800 | 11+11 | 600×800 |
| PNSS-1000 | 18.5+18.5 | 800×1000 |
| PNSS-1200 | 30+30/22+22 | 1000×1200 |
| PNSS-1400 | 45+45 | 1400×1200 |
| PNSS-1600 | 55+55 | 1600×1200 |
| PNSS-1800 | 75+75 | 1800×1400 |
| PNSS-2000 | 90+90 | 2000×1400 |
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