Twin-Shaft Metal Shredders Built to Order
“Crush Harder, Waste Less — Shredding Power From 22 kW to 264 kW.“
Engineered for scrap steel, aluminium, copper wire, e-waste, oil filters, drums and end-of-life vehicle bodies.
- Model Range: 7 sizes, SSJ-600 to SSJ-2000, tailored to your throughput
- Cutter Discs: Premium alloy steel / M6V, 52–55 HRC, weld-and-wire repairable
- Drive & Control: Twin pure-copper motors + dual gearbox, soft-start with auto current-overload reversing
Dingjoin Shredder & Crusher Machine For Sale
High-torque twin-shaft metal shredder built for small-batch recycling lines and light-gauge material size reduction.
SSJ-600 Metal Shredder
Cutter Disc Diameter:
Ø220 mm × 30 discs, 53–55 HRC alloy steel
Drive Power:
11 kW × 2 pure-copper motors, 8–15 r/min
Applications:
Thin sheet offcuts, aluminium cans, small e-waste, plastic-metal composites, light packaging metal, cable scrap.
Compact yet heavy-hitting shredder for workshops needing reliable throughput on medium-gauge scrap.
SSJ-800 Metal Shredder
Cutter Disc Diameter:
Ø260 mm × 20 discs, 53–55 HRC alloy steel
Drive Power:
18.5 kW × 2 pure-copper motors, 8–15 r/min
Applications:
Sheet metal scrap, small oil drums, aluminium profiles, light structural offcuts, mixed metal packaging.
Stainless-clad heavy-duty shredder engineered for tougher, denser scrap and longer duty cycles.
SSJ-1000 Heavy Duty Metal Shredder
Cutter Disc Diameter:
Ø400 mm × 25 discs, 53–55 HRC alloy steel
Drive Power:
37 kW × 2 pure-copper motors, 8–15 r/min
Applications:
Medium structural steel, thicker drums, cast aluminium, motor housings, light rebar bundles.
Large-frame twin-shaft shredder for continuous, high-volume processing of medium-to-heavy scrap.
SSJ-1200 Metal Shredder
Cutter Disc Diameter:
Ø400 mm × 20 discs, Ø60 mm thick, 53–55 HRC alloy steel
Drive Power:
45 kW × 2 pure-copper motors, 8–15 r/min
Applications:
Structural steel sections, automotive parts, thick-wall pipe, steel drums, baled metal packaging.
Industrial-grade shredder with reinforced eight-sided shaft for demanding, high-density metal streams.
SSJ-1400 Metal Shredder
Cutter Disc Diameter:
Ø500 mm × 23 discs, Ø60 mm thick, 52–55 HRC alloy steel (hooked triangular teeth)
Drive Power:
55 kW × 2 pure-copper motors, 8–16 r/min
Applications:
Heavy structural parts, scrapped car shells, section steel, rebar, dense metal blocks, mixed industrial scrap.
Heavy shredding platform delivering sustained torque for large-section and high-hardness scrap.
SSJ-1600 Metal Shredder
Cutter Disc Diameter:
Ø530 mm × 20 discs, Ø80 mm thick, 52–55 HRC alloy steel (hooked triangular teeth)
Drive Power:
75 kW × 2 pure-copper motors (415 V / 50 Hz), 8–15 r/min
Applications:
Large scrapped automobile shells, heavy structural steel, thick section steel, bundled rebar, dense compressed metal blocks.
Flagship high-capacity shredder with planetary drive, built for the heaviest continuous recycling operations.
SSJ-2000 Metal Shredder
Cutter Disc Diameter:
Ø600 mm × 20 discs, Ø100 mm thick, 52–55 HRC M6V steel (hooked triangular teeth)
Drive Power:
132 kW × 2 pure-copper motors, planetary gearbox, 10–15 r/min
Applications:
Whole end-of-life vehicle bodies, heavy structural steel, large drums and tanks, thick plate scrap, high-density baled metal.
Dingjoin Shredding Production Line Solutions
Wear-Resistant Blades That Keep Cutting, Year After Year.
The heart of every machine is a stack of premium alloy-steel cutter discs (M6V on the SSJ-2000), hardened to 52–55 HRC and ranging from Ø220 mm up to Ø600 mm depending on the model. Hooked triangular outer teeth bite into dense scrap and pull it inward instead of pushing it away, while the hexagonal or octagonal inner bore locks each disc firmly to the shaft. When wear finally sets in, the discs are rebuilt on-site by hard-facing and wire-cutting — so you restore full cutting performance at a fraction of the cost of replacement.
Twin Copper Motors and Twin Gearboxes for Relentless Shredding Force.
Each shredder runs on two full-copper, national-standard motors paired with two gearboxes, delivering balanced torque to both shafts at a slow, powerful 8–16 r/min. Power scales with your workload — from 11 kW × 2 on the SSJ-600 up to 132 kW × 2 with a planetary gearbox on the SSJ-2000. The low-speed, high-torque design chews through thick, tangled and irregular metal without stalling, and keeps noise and heat far lower than high-speed crushers.
A Backbone Engineered Against Twisting and Deflection.
The main shaft is machined from 45# quenched-and-tempered steel in a hexagonal or octagonal profile, with diameters from 110 mm up to 300 mm across the range. This faceted geometry transmits enormous torque without the discs slipping and resists the bending and twisting forces that destroy round-shaft machines. Matched with heavy-duty self-aligning roller bearings (Harbin / Wafangdian), the drivetrain stays true under continuous heavy load.
One-Touch Soft Start with Automatic Overload Reversing.
Every unit ships with an intelligent control cabinet featuring one-button step-down (soft) starting, which protects the motors and grid from inrush current. If a stubborn or oversized object jams the cutters, the system senses the current overload and reverses the shafts automatically to clear the blockage — no manual intervention, no downtime, and far less risk of blade or motor damage.
Split-Frame Design That Ships, Installs and Scales to Your Site.
The body is built from welded Q235 (stainless on the SSJ-1000) plate on a heavy square-tube frame, and adopts a split-frame structure for easy transport, assembly and maintenance. Overall dimensions can be scaled down to fit standard shipping containers or tailored to your plant layout. With seven models from SSJ-600 to SSJ-2000, you get a machine matched precisely to your material and throughput — nothing over-spec’d, nothing under-powered.
Dingjoin Shredding Production Line Solutions
Alloy Cutter System
Wear-Resistant Blades That Keep Cutting, Year After Year.
The heart of every machine is a stack of premium alloy-steel cutter discs (M6V on the SSJ-2000), hardened to 52–55 HRC and ranging from Ø220 mm up to Ø600 mm depending on the model. Hooked triangular outer teeth bite into dense scrap and pull it inward instead of pushing it away, while the hexagonal or octagonal inner bore locks each disc firmly to the shaft. When wear finally sets in, the discs are rebuilt on-site by hard-facing and wire-cutting — so you restore full cutting performance at a fraction of the cost of replacement.
Dual-Motor Torque Drive
Twin Copper Motors and Twin Gearboxes for Relentless Shredding Force.
Each shredder runs on two full-copper, national-standard motors paired with two gearboxes, delivering balanced torque to both shafts at a slow, powerful 8–16 r/min. Power scales with your workload — from 11 kW × 2 on the SSJ-600 up to 132 kW × 2 with a planetary gearbox on the SSJ-2000. The low-speed, high-torque design chews through thick, tangled and irregular metal without stalling, and keeps noise and heat far lower than high-speed crushers.
Hex / Octagonal Main Shaft
A Backbone Engineered Against Twisting and Deflection.
The main shaft is machined from 45# quenched-and-tempered steel in a hexagonal or octagonal profile, with diameters from 110 mm up to 300 mm across the range. This faceted geometry transmits enormous torque without the discs slipping and resists the bending and twisting forces that destroy round-shaft machines. Matched with heavy-duty self-aligning roller bearings (Harbin / Wafangdian), the drivetrain stays true under continuous heavy load.
Smart Overload Control
One-Touch Soft Start with Automatic Overload Reversing.
Every unit ships with an intelligent control cabinet featuring one-button step-down (soft) starting, which protects the motors and grid from inrush current. If a stubborn or oversized object jams the cutters, the system senses the current overload and reverses the shafts automatically to clear the blockage — no manual intervention, no downtime, and far less risk of blade or motor damage.
Modular Build & Custom Sizing
Split-Frame Design That Ships, Installs and Scales to Your Site.
The body is built from welded Q235 (stainless on the SSJ-1000) plate on a heavy square-tube frame, and adopts a split-frame structure for easy transport, assembly and maintenance. Overall dimensions can be scaled down to fit standard shipping containers or tailored to your plant layout. With seven models from SSJ-600 to SSJ-2000, you get a machine matched precisely to your material and throughput — nothing over-spec’d, nothing under-powered.
What Our Metal Shredders Process
End-of-Life Vehicle Bodies (ELVs)
Whole scrap car and light-truck shells, doors and body panels. Fed in by excavator or grab, they’re torn into dense, uniform fragments in a single pass — no torch pre-cutting, no crew of workers. Best handled by our large-frame models (SSJ-1400 / 1600 / 2000).
Scrap Steel & Structural Sections
Structural steel, section offcuts, rebar bundles, thick plate and machined parts. The low-speed high-torque twin shafts (8–16 r/min) shear dense ferrous scrap without stalling, turning bulky steel into mill-ready, high-density feed.
Non-Ferrous & Cast Metal (Ø small parts to housings)
Aluminium profiles, cast housings, radiators, motor casings and copper-bearing scrap. Clean shearing without smearing produces a consistent size for easier downstream separation and higher recovery value — ideal for our SSJ-800 / 1000 / 1200 range.
Drums, Cans & Mixed Metal Packaging
Steel drums, paint and oil cans, oil filters and baled metal packaging. The wear-resistant alloy discs process thin-wall and coated metal without clogging, and worn teeth are rebuilt on-site by hard-facing and wire-cutting to keep running costs low.
Specifications of Metal Shredders
| Item | Parameter | Specification |
| Model | Model No. | SSJ-600 |
| Main Body | Body structure | Split design for easy disassembly and assembly, fabricated from welded Q235 steel plate |
| Body Structure | Overall dimension (mm) | 250011001600 L×W×H, can be designed according to container size or customized as client request |
| Rotational speed (r/min) | 8–15 rpm | |
| Installed power (kW) | 11 kW × 2 sets | |
| Motor model | Full copper IEC standard motor | |
| Reducer model | Heavy-duty ZQ400 reducer ×2 sets | |
| Reducer ratio | 40.17–48.57 | |
| Machine frame | Welded by 100×100 square tubes | |
| Cutter Disc | Quantity (pcs) | 30 |
| Hardness range | 53–55 HRC | |
| Disc diameter | 220 mm | |
| Disc thickness | 20 mm (customizable) | |
| Cutter | Cutter type & material | Hexagon bore, high-quality alloy steel |
| Later repair method | Surfacing welding & wire cutting | |
| Shaft | Shaft type | Hexagonal shaft |
| Shaft material | 45# quenched & tempered steel | |
| Shaft diameter (mm) | 110 mm | |
| Shaft length (mm) | 930 mm | |
| Spacer | Material | 45# quenched & tempered steel |
| Quantity (pcs) | 30 | |
| Bearing | Model & manufacturer | Harbin spherical roller bearing |
| Connection | Main unit connection | Coupling connection between reducer shaft and main shaft |
| Control Cabinet | Intelligent function | One-touch step-down soft start |
| Protection | Automatic reversal on current overload |
| Item | Parameter | Specification |
| Model | Model No. | SSJ-800 |
| Main Body | Body structure | Split design for easy disassembly and assembly, fabricated from welded Q235 steel plate |
| Body Structure | Overall dimension (mm) | 300014001800 L×W×H, can be designed according to container size or customized as client request |
| Rotational speed (r/min) | 8–15 rpm | |
| Installed power (kW) | 18.5 kW × 2 sets | |
| Motor model | Full copper IEC standard motor | |
| Reducer model | Heavy-duty ZQ500 reducer ×2 sets | |
| Reducer ratio | 40.17–48.57 | |
| Machine frame | Welded by 100×100 square tubes | |
| Cutter Disc | Quantity (pcs) | 20 |
| Hardness range | 53–55 HRC | |
| Disc diameter | 260 mm | |
| Disc thickness | 40 mm (customizable) | |
| Cutter | Cutter type & material | Hexagon bore, high-quality alloy steel |
| Teeth quantity | Customizable per client requirements | |
| Later repair method | Surfacing welding & wire cutting | |
| Shaft | Shaft type | Hexagonal shaft |
| Shaft material | 45# quenched & tempered steel | |
| Shaft diameter (mm) | 140 mm | |
| Shaft length (mm) | 1200 mm | |
| Spacer | Material | 45# quenched & tempered steel |
| Quantity (pcs) | 20 | |
| Bearing | Model & manufacturer | Harbin spherical roller bearing |
| Connection | Main unit connection | Coupling connection between reducer shaft and main shaft |
| Control Cabinet | Intelligent function | One-touch step-down soft start |
| Protection | Automatic reversal on current overload |
| Item | Parameter | Specification |
|---|---|---|
| Model | Model No. | SSJ-1000 Heavy Duty |
| Main Body | Body structure | Split design for easy disassembly and assembly, fabricated from welded stainless steel plate |
| Body Structure | Overall dimension (mm) | 390018002300 L×W×H, can be designed according to container size or customized as client request |
| Rotational speed (r/min) | 8–15 rpm | |
| Installed power (kW) | 37 kW × 2 sets | |
| Motor model | Full copper IEC standard motor | |
| Reducer model | Heavy-duty square box 750 reducer ×2 sets | |
| Reducer ratio | 48.57–40.17 | |
| Machine frame | Welded by 120×120 square tubes | |
| Cutter Disc | Quantity (pcs) | 25 |
| Hardness range | 53–55 HRC | |
| Disc diameter | 400 mm | |
| Disc thickness | 40 mm | |
| Cutter | Cutter type & material | Hexagon bore, high-quality alloy steel |
| Teeth quantity | Customizable per client requirements | |
| Shaft | Shaft type | Hexagonal shaft |
| Shaft material | 45# quenched & tempered steel | |
| Shaft diameter (mm) | 180 mm | |
| Shaft length (mm) | 1500 mm | |
| Spacer | Material | 45# quenched & tempered steel |
| Quantity (pcs) | 25 | |
| Bearing | Model & manufacturer | Harbin spherical roller bearing |
| Connection | Main unit connection | Coupling connection between reducer shaft and main shaft |
| Control Cabinet | Intelligent function | One-touch step-down soft start |
| Protection | Automatic reversal on current overload |
| Item | Parameter | Specification |
| Model | Model No. | SSJ-1200 |
| Main Body | Body structure | Split design for easy disassembly and assembly, fabricated from welded Q235 steel plate |
| Body Structure | Overall dimension (mm) | 410018002300 L×W×H, can be designed according to container size or customized as client request |
| Rotational speed (r/min) | 8–15 rpm | |
| Installed power (kW) | 45 kW × 2 sets | |
| Motor model | Full copper IEC standard motor | |
| Reducer model | 750 square box reducer ×2 sets | |
| Reducer ratio | 40.17–48.57 | |
| Machine frame | Welded by 140×140 square tubes | |
| Cutter Disc | Quantity (pcs) | 20 |
| Hardness range | 53–55 HRC | |
| Disc diameter | 400 mm | |
| Disc thickness | 60 mm (customizable) | |
| Cutter | Cutter type & material | Hexagon bore, high-quality alloy steel |
| Teeth quantity | Customizable per client requirements | |
| Later repair method | Surfacing welding & wire cutting | |
| Shaft | Shaft type | Hexagonal shaft |
| Shaft material | 45# quenched & tempered steel | |
| Shaft diameter (mm) | 180 mm | |
| Shaft length (mm) | 1770 mm | |
| Spacer | Material | 45# quenched & tempered steel |
| Quantity (pcs) | 20 | |
| Bearing | Model & manufacturer | Harbin spherical roller bearing |
| Connection | Main unit connection | Coupling connection between reducer shaft and main shaft |
| Control Cabinet | Intelligent function | One-touch step-down soft start |
| Protection | Automatic reversal on current overload |
| Item | Parameter | Specification |
| Model | Model No. | SSJ-1400 Heavy-Duty Shredder |
| Main Body | Body structure | Split design for easy disassembly and assembly, fabricated from welded Q235 steel plate |
| Body Structure | Overall dimension (mm) | 4800×2100×2400 L×W×H, can be designed according to container size or customized as client request |
| Rotational speed (r/min) | 8–16 rpm | |
| Installed power (kW) | 55 kW × 2 sets | |
| Motor model | Full copper IEC standard motor | |
| Reducer model | Heavy-duty square box 850 reducer ×2 sets (customized) | |
| Reducer ratio | 48.57–40.17 | |
| Machine frame | Welded by 140×140 square tubes | |
| Cutter Disc | Quantity (pcs) | 23 |
| Disc material | Premium alloy steel | |
| Hardness range | 52–55 HRC | |
| Disc diameter | 500 mm | |
| Disc thickness | 60 mm | |
| Cutter | Cutter type | Outer teeth with small-hook-angle triangular profile, octagonal inner bore |
| Teeth quantity | Customizable per client requirements | |
| Manufacturer | Ma’anshan | |
| Shaft | Shaft type | Octagonal shaft |
| Shaft material | 45# quenched & tempered steel | |
| Shaft diameter (mm) | 260 mm | |
| Spacer | Material | 45# quenched & tempered steel |
| Quantity (pcs) | 23 | |
| Bearing | Model & manufacturer | Harbin spherical roller bearing |
| Connection | Main unit connection | Coupling connection between reducer shaft and main shaft |
| Control Cabinet | Startup | One-touch step-down soft start |
| Protection | Automatic reversal on current overload |
| Item | Parameter | Specification |
| Model | Model No. | SSJ-1600 |
| Main Body | Body structure | Split design for easy disassembly and assembly, fabricated from welded Q235 steel plate |
| Body Structure | Overall dimension (mm) | 5400×2400×2900 L×W×H, can be designed according to container size or customized as client request |
| Rotational speed (r/min) | 8–15 rpm | |
| Installed power (kW) | 75kW × 2 sets, 415v 50hz | |
| Motor model | Full copper IEC standard motor | |
| Reducer model | Heavy-duty square box 1000 reducer ×2 sets | |
| Reducer ratio | 48.57–40.17 | |
| Machine frame | Welded by 180×180 square tubes | |
| Cutter Disc | Quantity (pcs) | 20 |
| Disc material | Premium alloy steel | |
| Hardness range | 52–55 HRC | |
| Disc diameter | 530 mm | |
| Disc thickness | 80 mm | |
| Cutter | Cutter type | Outer teeth with small-hook-angle triangular profile, octagonal inner bore |
| Teeth quantity | 6 teeth | |
| Manufacturer | Ma’anshan | |
| Shaft | Shaft type | Octagonal shaft |
| Shaft material | 45# quenched & tempered steel | |
| Shaft diameter (mm) | 260 mm | |
| Shaft length (mm) | 2250 mm | |
| Spacer | Material | 45# quenched & tempered steel |
| Quantity (pcs) | 20 | |
| Bearing | Model & manufacturer | Wafangdian spherical roller bearing |
| Connection | Main unit connection | Coupling connection between reducer shaft and main shaft |
| Control Cabinet | Startup | One-touch step-down soft start |
| Protection | Automatic reversal on current overload |
| Item | Parameter | Specification |
| Model | Model No. | SSJ-2000 Shredder |
| Main Body | Body structure | Split design for easy disassembly and assembly, fabricated from welded Q235 steel plate |
| Body Structure | Overall dimension (mm) | 6500×2500×2800 L×W×H, can be designed according to client request |
| Machine body dimension (mm) | 2660×1360×800 (L×W×H) | |
| Rotational speed (r/min) | 10–15 rpm | |
| Installed power (kW) | 132kW-4×2 sets | |
| Motor model | Full copper IEC standard motor | |
| Reducer model | GX2KAH17 Planetary Reducer | |
| Reducer brand | Guomao | |
| Reducer ratio | 125, 160 | |
| Machine frame | Welded by 200×200 square tubes | |
| Cutter Disc | Quantity (pcs) | 20 |
| Disc material | M6V | |
| Hardness range | 52–55 HRC | |
| Disc diameter | 600 mm | |
| Disc thickness | 100 mm | |
| Cutter | Cutter type | Outer teeth with small-hook-angle triangular profile, octagonal inner bore |
| Teeth quantity | 7 teeth (customizable per client requirements) | |
| Manufacturer | Ma’anshan | |
| Shaft | Shaft type | Octagonal shaft |
| Shaft material | 45# quenched & tempered steel | |
| Shaft diameter (mm) | 300 mm | |
| Spacer | Material | 45# steel |
| Quantity (pcs) | 20 | |
| Bearing | Model & manufacturer | Harbin spherical roller bearing |
| Control Cabinet | Startup device | One-touch step-down soft start |
| Protection | With over-current & overload protection, automatic forward/reverse rotation |
Single-Shaft vs. Twin-Shaft Metal Shredder — Which One Fits Your Scrap?
Not all shredders work the same way. The biggest decision buyers face is single-shaft versus twin-shaft. Both reduce material size, but they do it with different mechanics, handle different scrap, and carry very different maintenance realities. Here is a straight comparison so you can match the machine to the metal you actually process. Every model in our range — SSJ-600 through SSJ-2000 — is a twin-shaft design, engineered for exactly the heavy, irregular, mixed metal that gives single-shaft units the most trouble.
How Each One Works
A single-shaft shredder uses one rotating shaft of blades working against a fixed screen. Material is pushed against the rotor (often by a hydraulic ram) and forced through a sizing screen, so output particle size is uniform and controllable. It shines on softer, lighter, more consistent feed.
A twin-shaft shredder uses two counter-rotating shafts whose interlocking cutter discs grip material from both sides and tear it apart. It doesn’t rely on a screen or a ram — the two shafts simply pull heavy, bulky and unevenly shaped scrap inward and shear it. This is what makes it the workhorse for tough metal recycling.
Which Should You Choose?
| Factor | Single-Shaft Shredder | Twin-Shaft Shredder (Our Machines) |
|---|---|---|
| Cutting action | One rotor against a fixed screen | Two counter-rotating shafts shearing from both sides |
| Best for | Softer, uniform, lighter material | Heavy, hard, bulky and mixed metal scrap |
| Feed tolerance | Sensitive to un-shreddable hard objects | Handles irregular, high-hardness scrap without a ram |
| Jam handling | Prone to stalling, often needs manual clearing | Auto current-overload reversing clears jams on its own |
| Output size | Very uniform (screen-controlled) | Coarser, dense fragments — ideal for mills and transport |
| Maintenance | Screen and ram add wear parts | Fewer wear points; discs weld & wire-cut repairable on-site |
| Torque profile | Higher speed, lower torque | Low speed (8–16 r/min), very high torque |
Choose a single-shaft machine when you need tightly controlled, uniform particle size on relatively soft or consistent material and can keep hard contaminants out of the feed.
Choose a twin-shaft machine — like every model we build — when your reality is heavy scrap steel, end-of-life car bodies, drums, structural sections and mixed metal that varies load to load. The dual-drive, low-speed high-torque design tears through it without a screen to clog or a ram to jam, and the automatic overload reversing keeps the line running when a stubborn piece drops in. For most scrap yards and metal recyclers, that resilience is exactly what protects daily throughput and long-term uptime.
Dingjoin Metal Shredder Prices & ROI Analysis
Factory-Direct Pricing Structure
Skip the layers of resellers and trading agents that inflate equipment costs. Because we design, machine and weld the core components in-house — the split-frame body, the hex/octagonal shafts and the alloy-steel cutter discs — you buy the machine at the true factory price, typically well below what a middleman would quote for comparable specs.
- Electric Standard Series (SSJ-600 – SSJ-1200): Lower entry price and low running cost per ton, ideal for fixed recycling workshops and plants with stable power supply.
- Heavy Industrial Series (SSJ-1400 – SSJ-2000): Higher torque and larger cutter discs for continuous, high-volume operations processing car shells, structural steel and dense baled metal.
ROI Breakdown: How the Machine Pays for Itself
A twin-shaft metal shredder is not a sunk cost — it is a revenue-generating asset. For a typical mid-sized scrap yard, the payback period usually lands within 8 to 14 months. Here is where the returns come from:
A. Cut Labor and Consumable Costs Dramatically
Manual scrap processing with gas cutting torches is slow, hazardous and burns through expensive consumables every single day.
- Torch-cutting method: several workers manually cutting scrap steel and car bodies shift after shift.
- Shredder method: one excavator or grab operator simply feeds the hopper — a single person runs the line.
- The saving: you remove multiple daily wages and eliminate the ongoing monthly bill for cutting gas entirely.
B. Turn Bulky Scrap Into High-Value, High-Density Output
Loose, bulky scrap means you are paying freight to haul empty space. Shredding compresses the same tonnage into uniform, dense fragments that load tighter and melt faster.
- The result: you fit noticeably more weight onto every truck, cutting transport trips, and you sell clean shredded material to mills and foundries at a premium over loose mixed scrap.
Cost Comparison Table
Reference Scenario: processing roughly 1,000 tons of scrap metal per month.
| Cost Factor | Traditional Torch-Cutting (Loose Scrap) | Twin-Shaft Shredder (Automated) | Your Advantage |
|---|---|---|---|
| Labor required | 4–5 workers, high wages and safety exposure | 1 operator feeding the machine | Save several monthly wages plus all cutting-gas cost |
| Transport efficiency | Low density, hauling bulky “air” | High density, compact uniform fragments | Fewer freight trips, lower fuel and logistics spend |
| Price paid by mills | Standard rate for loose mixed scrap | Premium rate for clean shredded metal | Higher margin on every ton you sell |
| Uptime & safety | Frequent stoppages, torch hazards | Soft-start with automatic overload reversing | Steadier throughput, lower injury and downtime risk |
Why Our Metal Shredder Outlasts the Cheaper Alternatives
1. Automatic Overload Reversing
Keep Shredding — Without Stopping to Clear Jams.
Jamming is the number-one productivity killer in metal recycling, because incoming scrap is never uniform in hardness. Our control cabinet constantly monitors motor current; the moment it senses an overload from an un-shreddable block, it reverses both shafts automatically to release and re-feed the material. Where budget machines stall and need manual clearing, ours keeps the line moving — protecting the motors, blades and your daily output.
2. Twin-Motor, Twin-Gearbox Drive
Real Torque for Heavy, Irregular Scrap.
Every shredder is driven by two full-copper, national-standard motors paired with two heavy gearboxes — reduction-type or planetary on the largest model. This delivers massive torque at a deliberately low 8–16 r/min, so the machine grinds through car bodies, thick-wall pipe and tangled steel with steady force instead of the power loss and stalling common on single-drive, high-speed units.
3. Hardened Alloy-Steel Cutter Discs
Built to Cut, and Simple to Restore.
The cutter discs are made from premium alloy steel (M6V on the SSJ-2000) and hardened to 52–55 HRC, so they hold their edge against constant heavy impact instead of chipping like cheap cast blades. The hexagonal or octagonal inner bore locks each disc rigidly to the shaft. And when the teeth eventually wear, you don’t scrap the discs — they’re rebuilt on-site by hard-facing and wire-cutting, dramatically lowering lifetime running cost.
4. Split-Frame Body & Sealed Heavy Bearings
Run Long Shifts Without Structural Fatigue.
Metal shredding produces violent vibration and abrasive dust. The body is welded from heavy Q235 plate (stainless on the SSJ-1000) on a thick square-tube frame — 100×100 up to 200×200 mm depending on model — so it resists deformation under sustained load. Paired with heavy-duty self-aligning roller bearings from Harbin and Wafangdian, the drivetrain keeps running reliably shift after shift in demanding scrap-yard conditions.
Dingjoin vs. Generic Brands
| Feature | Our Metal Shredder | Generic / Budget Brands |
|---|---|---|
| Cutter discs | Premium alloy steel / M6V, 52–55 HRC, weld & wire-cut repairable | Cast steel that chips and can’t be rebuilt |
| Overload handling | Auto current-sensing shaft reversal | Manual reset, prone to repeated jamming |
| Main frame | Heavy Q235 / stainless plate on square-tube frame, split design | Thin welded plate that deforms and is hard to service |
| Shaft & bearings | 45# quenched hex/octagonal shaft, Harbin/Wafangdian roller bearings | Light round shaft, low-grade bearings that fail under dust |
| Startup | One-touch step-down (soft) start | Direct start, high inrush stress on motor and grid |
Global Cases of Shredder Machines
Our twin-shaft metal shredders are trusted by scrap yards, dismantling centers and recycling plants on multiple continents — from large steel-mill feed operations to regional recycling facilities. Wherever heavy, irregular metal needs to become dense, uniform, ready-to-melt material, our machines earn their place: processing end-of-life vehicle shells, structural steel, drums and mixed metal scrap day after day. Backed by factory-direct pricing, a full model range from SSJ-600 to SSJ-2000, and dependable export packing and shipping support, buyers worldwide choose us for consistent shredding performance and equipment that keeps running in the toughest conditions.
