Applicable Materials: Prepared light scrap metal, empty metal containers, aluminum profiles, plastic drums, plastic lumps, appliance housings, selected rubber products, electronic waste housings and suitable industrial recycling materials within the shredder feeding limits.
Key technical information for quick evaluation.
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The four shaft shredder is a low-speed, high-torque size-reduction machine that uses four counter-rotating cutter shafts to grip, shear and repeatedly cut prepared recycling materials.
Compared with a twin shaft shredder used mainly for coarse primary shredding, the four shaft shredder provides additional cutting passes and can be equipped with a bottom screen to produce smaller and relatively more consistent output.
Typical materials may include prepared light scrap metal, empty metal containers, aluminum profiles, plastic drums, plastic lumps, appliance housings, rubber products, electronic waste housings and selected industrial recycling materials. Cutter and screen configurations must be selected according to the actual feed material.
Material that meets the selected screen opening is discharged from the machine, while oversized pieces remain inside the shredding chamber for further cutting. The final output depends on the cutter width, tooth design, shaft arrangement, screen opening and material characteristics.
Bulky, compressed or oversized metal scrap may require opening or primary processing before entering the four shaft shredder. Heavy steel sections, thick solid shafts and large castings may be more suitable for hydraulic shearing, a heavy-duty twin shaft shredder or another dedicated processing method.
When further material liberation or smaller metal output is required, the shredded material may be transferred to a scrap metal crusher for secondary hammer crushing.
After shredding, a magnetic separator may recover exposed iron and steel from suitable mixed processed material. Clean, single-metal ferrous scrap may not require magnetic separation.
After ferrous metal removal, screening and suitable material preparation, an eddy current separator may recover conductive non-ferrous metals from an appropriate non-metallic material stream.
The four shaft shredder can operate as an individual machine or form part of a scrap metal recycling line with controlled feeding, discharge conveying, magnetic separation, optional secondary crushing, additional sorting, dust collection and centralized control.
The final machine configuration depends on the material type, maximum feeding dimensions, thickness, hardness, required capacity, screen opening, expected output condition and downstream process.
A four shaft shredder uses four coordinated low-speed cutter shafts. The upper shafts help catch, pull and redistribute material, while the lower cutting zone continues shearing and recirculating oversized pieces until they can leave through the selected screen or discharge arrangement. This configuration is intended to improve material control and repeated cutting, not simply to double the capacity of a twin shaft shredder.
The machine can be evaluated for irregular, bulky or mixed industrial material that benefits from repeated gripping and cutting inside the chamber. Suitable applications depend on the cutter design and may include selected metal scrap, aluminum scrap, plastic products, rubber, cables and mixed recycling material. Representative samples are required because feeds with the same name can differ greatly in density, hardness and contamination.
A twin shaft shredder is normally selected for coarse opening, tearing and volume reduction with two counter-rotating shafts. A single shaft shredder uses a hydraulic pusher, one rotor and a screen for controlled cutting of suitable prepared material. A four shaft shredder uses four active shafts for repeated gripping, recirculation and size reduction. The correct machine should be selected from the feed form and required output, not from the number of shafts alone.
When a sizing screen is used, the opening influences the maximum discharge condition, but capacity also depends on shaft speed, cutter width, hook profile, chamber loading, material toughness and recirculated load. Smaller openings can increase residence time and cutter, spacer and screen wear. Throughput should be confirmed from representative material rather than motor power or chamber width alone.
Pressure vessels, sealed containers, batteries, large solid shafts, massive castings, thick structural steel and unidentified hazardous items are not standard direct feed. Please provide photos, dimensions, individual weight, bulk density, metal and non-metal composition, contamination, hourly quantity, output requirement, operating hours and downstream process before configuration.
Four Shaft shredder working principle：
The four shaft shredder uses four wear-resistant shredding tooth rollers. During operation, the four shredding tooth rollers rotate relative to each other, forming two V-shaped shredding tooth chambers to crush the material. When the material enters the V-shaped shredding tooth chamber of the upper two rollers, it is first sheared and shredded (coarse shredding) by the relative rotation and shearing force of the upper two rollers. Then it enters the shredding chamber of the lower two rollers that rotate relative to each other. Using the shearing force of the lower two rollers (with small and thin teeth), the material is shredded again to the required particle size (fine shredding) and discharged from the lower rollers.
1000 Model Four-Axis Metal Shredder Chassis Structure Display：
1. Four cutter shafts cut simultaneously, resulting in a large crushing capacity and high work efficiency.
2. High-torque motor with hardened gear reducer drives the cutter shafts, achieving a powerful shearing effect at low speed and high torque.
3. The cutters use a claw structure, providing auxiliary material grabbing, suitable for processing various large scrap metal materials such as scrapped car shells.
4. After the cutters wear out, the most advanced European cutter coating and welding repair technology is used, enabling multiple reuse of the cutters and greatly reducing maintenance costs.
Parameter description diagram for Four Shaft Shredder | Heavy Duty Industrial Shredder for Metal Recycling | Haoxing Machinery:
The four shaft shredder can be custom-designed according to customer needs and material requirements. It is a large-scale environmentally friendly waste shredding equipment designed and manufactured by Haoxing Machinery based on years of manufacturing experience and continuous absorption of advanced industry technologies, while also considering user production needs and feedback. This equipment has high output, reliable performance, powerful shredding capacity, and a wide range of material applications, and is widely used in the waste recycling and regeneration industry.
Find common questions about scrap metal crushers, shredders, recycling lines, equipment selection, capacity configuration and operation requirements.
The right model should be selected according to raw material type, feeding size, moisture content, impurity level, required capacity, output size, working hours, and site layout. If the shredder will be used in a complete recycling line, conveyors, screening equipment, magnetic separation, dust removal, and electrical control system should also be considered.
In many applications, a four-shaft shredder can be equipped with a screen to control the discharge size. Materials that do not reach the required size may stay in the shredding chamber for further cutting. The screen size should be selected according to final material use, capacity requirement, and material type.
Yes. A four-shaft shredder can provide more controlled discharge size than many primary shredders. The output size is mainly affected by cutter thickness, screen hole size, shaft structure, and material characteristics. If a specific particle size is required, the screen and cutter configuration should be confirmed before production.
The capacity of a four-shaft shredder usually depends on motor power, cutter size, shaft speed, feeding method, screen size, and material density. Small and medium models may be used for several hundred kilograms to several tons per hour, while heavy-duty models can be designed for higher continuous processing capacity.
A four-shaft shredder can process many types of solid waste and recyclable materials, such as plastic waste, rubber waste, wood, paper mill waste, municipal solid waste, industrial waste, light metal scrap, aluminum scrap, and mixed bulky waste. The suitable configuration should be selected according to material size, hardness, moisture content, and impurity level.
A dual-shaft shredder is suitable for general primary shredding with good cost efficiency. A four-shaft shredder is better for complex materials or stricter output size requirements, but it usually costs more.
The price and motor power depend on machine size, cutter structure, screen size, material type, and capacity. Medium and large four-shaft shredders may use about 30-200 kW or higher total power, while heavy-duty customized models require separate selection according to actual material.
If a suitable reference site is available near your area, we can help arrange an on-site visit. Please provide your location, material type, and expected capacity so that we can recommend a nearby production line.
Yes. A four-shaft shredder can process aged waste, municipal solid waste, industrial waste, and other mixed materials. The machine configuration should be selected according to moisture content, impurity level, and required processing capacity.
A four-shaft shredder has strong biting force, stable feeding, repeated cutting, and more controlled discharge size when a screen is used. It is suitable for complex materials such as solid waste, plastics, rubber, light metal scrap, and mixed industrial waste, especially when output uniformity is important.
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