Twin Shaft Mixer
High Automation
Mass Production
Widely Applied
The twin-shaft mixer, also known as the forced twin-shaft concrete mixer, is the most widely used model in batching plants and can also operate independently as a standalone unit. It is suitable for mixing a wide range of materials, including standard concrete, dry hard concrete, wet concrete, precast concrete, high-performance concrete, and various types of mortar.
AGICO’s JS series twin-shaft mixers feature high-wear-resistant alloy mixing arms that significantly enhance mixing efficiency and extend service life. These mixers are widely used in major infrastructure projects such as high-speed rail, hydropower, large and medium-sized precast plants, airports, roads, highways, and bridges—making them a reliable choice for high-quality construction.
Regardless of your project size, AGICO remains customer-focused, offering customized concrete equipment technical solutions and professional support to ensure efficient, smooth project execution.
Contact us today to find the solution that best fits your needs.
Key Features of AGICO Twin-Shaft Concrete Mixers
Efficient and Durable Mixing Core System
Multi-layer Shaft End Sealing – Reliable Leak Prevention: Equipped with a combination of wear-resistant rubber, labyrinth, and floating seals to effectively prevent slurry leakage. All seals are removable and easy to replace, designed for harsh conditions to reduce maintenance costs and downtime.
Upgraded Thickened Mixing Shaft – Extended Service Life: The mixing shaft is made of high-chromium alloy with ≥26% chromium content and is 50 mm thicker than standard designs, significantly enhancing durability and longevity.
In-House Designed Gearbox – Powerful and Stable Performance: Utilizing planetary transmission with fully ground gears for smoother operation and higher load capacity—especially suited for demanding environments.
User-Friendly Operation and Efficient Management
Central Control Panel – Intuitive and Reliable: Integrated with high-quality components from leading domestic and international brands. Easy to operate, fully functional, and designed to reduce failure rates and improve operational efficiency.
Fully Automated System Integration – Enhanced Safety: Highly automated feeding, water supply, and discharging systems. All electrical control modules are centralized in one control box, streamlining workflow and increasing safety.
Real-Time Monitoring – Stay in Control: Monitors gearbox, discharge pump, and electric lubrication system in real time, enabling early fault detection and prevention.
Outstanding Mixing Performance
Multi-Position Offset Blade Design – Uniform Mixing: Multiple groups of offset blades are arranged inside the drum to increase mixing speed and uniformity, reduce mixing time, and ensure consistent concrete quality.
Fast Mixing Speed – High Output Efficiency: Optimized rotation speed, above industry standards, increases productivity and saves time—ideal for high-efficiency project demands.
Enhanced Durability – Shaft Seal and Oil Pump System: Protects against shaft wear and slurry leakage, extending the life of core components and reducing the risk of unplanned downtime.
Premium Wear-Resistant Components – Lower Maintenance Costs
High-Chromium Wear-Resistant Arms and Liners: Elliptical design reduces resistance. Made from high-strength wear-resistant alloy with strong impact resistance, significantly extending maintenance intervals.
Hydraulic Discharge System – Safer and Smoother: Solves discharge failures caused by air pressure loss. Ensures smooth discharge and enhances operational reliability.
Multi-Point Spray System – Even and Controllable Moisture: Improves mixing uniformity, prevents uneven wet/dry patches, and adapts to a wide range of concrete mix designs.
Highly Integrated System – Adaptable to Diverse Projects
Compact Design – Smaller Footprint: The skip hoist system is ideal for small to medium projects, saving space and allowing flexible deployment.
Modular Powder Weighing System: Ensures high measurement accuracy and easier maintenance, supporting efficient and stable production.
Modular Assembly – Easy Relocation and Installation: Simplified, standardized structure for fast transport and on-site setup—ideal for multi-site operations.
Optional Add-ons: Weighing Protection and Microwave Moisture Measurement: Meet high-precision production standards and enhance your quality control capabilities.
Specifications of Twin-Shaft Mixers
| Model | AG – JS500 | AG – JS750 | AG – JS1000 | AG – JS1500 | AG – JS2000 | AG – JS3000 |
|---|---|---|---|---|---|---|
| Feeding Capacity (L) | 800 | 1200 | 1600 | 2400 | 3200 | 4800 |
| Discharge Capacity (L) | 500 | 750 | 1000 | 1500 | 2000 | 3000 |
| Theoretical Output (m³/h) | ≈25 | ≈35 | ≈50-60 | ≈75-90 | ≈120 | ≈180 |
| Max Aggregate Size (Pebble/Crushed Stone) (mm) | ≤40/50 | ≤40/50 | ≤60/80 | ≤60/80 | ≤80/100 | ≤80/120 |
| Working Cycle Time (s) | 72 | 72 | 72/60 | 72/60 | 60 | 60 |
| Mixing Blade Speed (r/min) | 35 | 26 | 29.6 | 23.5 | 24.5 | 21 |
| Number of Mixing Blades | 2×7 | 2×7 | 2×8 | 2×8 | 2×8 | 2×8 |
| Motor Model | Y180M-4 | Y200L-4 | Y180M-4 | Y180M-4 | Y250M-6 | Y280M-6 |
| Motor Power (kw) | 18.5 | 30 | 2×18.5 | 2×30 | 2×37 | 2×55 |
| Dimensions (L×W×H) (mm) | 3050×2530×2680 | 3110×2620×2580 | 4320×2200×3300 | 4720×2200×3000 | 3500×2400×2152 | 4050×2680×2150 |
| Machine Weight (kg) | 4000 | 5500 | 8700 | 11130 | 7500 | 9200 |
Equipment Details of Twin-Shaft Concrete Mixer
Feeding System
The most common feeding method for twin-shaft concrete mixers is the belt conveyor system. After weighing, materials are transported via a belt conveyor to the hopper located above the mixer, from where they are fed into the mixing drum through the hopper or a chute. This method is ideal for large-scale continuous production.
For smaller or mobile units, bucket elevators, manual feeding, or loader-based feeding can also be used. Depending on your production scale and site conditions, the feeding method can be flexibly chosen to best suit your needs.
Mixing System
The mixing system of the JS series mixer consists of a motor, belt pulley, gearbox, gears, mixing unit, and mixing drum. The main motor connects via belt to a two-stage gearbox, which drives two horizontally mounted mixing shafts in opposite directions at equal speed through two pairs of open gears.
Electrical System
The electrical control system manages the motors for main drive, water supply, feeding, and discharging. All electrical components are housed in a control cabinet. Components are mounted on a steel panel inside the cabinet, ensuring safety, reliability, and ease of operation and maintenance.
Discharging System
The discharge system is controlled by a pneumatic or hydraulic bottom discharge gate. After the mixing process is completed, the control system sends a command to open the discharge gate. The mixed material is then discharged by its own weight, flowing into the transportation equipment below (such as concrete trucks, belt conveyors, or hoppers).
The bottom discharge gate can be equipped with dual gates or multiple discharge openings to enhance discharge efficiency. Additionally, we provide a vibration system to assist with discharge, preventing material adhesion and blockages. The entire discharge process is precisely managed by the automatic control system, allowing for timed and metered discharging, which increases both production efficiency and stability.
Working Principle of Twin-Shaft Concrete Mixer
The mixer consists of a horizontally arranged twin trough-shaped mixing drum, two counter-rotating mixing shafts, and multiple sets of mixing blades mounted on the shafts.
When the shafts begin rotating, the blades drive the material in a circular motion within the drum, causing it to be lifted and turned. At the blade intersection zones, material is exchanged between the two shafts. Additionally, the blades move the mix along the axial direction, creating continuous circulation between the two rotating planes. This ensures a more thorough and efficient mixing process.
Compared to traditional drum-type mixers, twin-shaft mixers offer significantly higher mixing intensity, making them especially suitable for medium to large-scale projects with strict quality requirements and tight schedules.
Feeding Process of Twin-Shaft Concrete Mixer
The correct feeding sequence for a forced twin-shaft mixer is: coarse aggregate, cement, fine aggregate (sand), and water.
In concrete mixing, sand and gravel serve as aggregates providing structural support. Cement mixed with water forms a slurry that coats the aggregates, fills gaps, and lubricates the mixture, ensuring good workability and ease of casting. Once the slurry hardens, it binds the structure firmly, creating strong and durable concrete.
Before mixing, accurately weigh each raw material according to the design mix to minimize measurement errors and avoid quality fluctuations. The proper feeding order and scientifically set mixing time directly affect the concrete’s uniformity and final strength. It is recommended to use an automatic batching system combined with standardized operating procedures to enhance mixing accuracy and production efficiency.
Why AGICO?
Meeting Diverse Production Needs
Our twin-shaft concrete mixers support discharge capacities ranging from 0.65 to 13.5 cubic yards, offering flexible solutions for everything from small-scale jobs to large-scale construction projects.
Tailored Solutions
AGICO provides a wide range of components and optional features to suit your specific application. We work closely with you to develop customized, innovative solutions that fit your project requirements precisely.
Full Lifecycle Service Support
From pre-sale consultation to technical support during installation and after-sales maintenance, AGICO remains customer-focused, delivering professional service throughout the entire project lifecycle.
Fast Delivery and On-Site Support
With a streamlined production and logistics system, AGICO ensures quick delivery and on-time installation. We offer on-site setup, commissioning, and technical support to help you achieve immediate production readiness.
—— We provide high-quality, effective, and customized solutions for all concrete applications. ——
