Explore our engineering excellence. Select from our advanced range of secondary crushing, grinding, and separation equipment designed for high throughput and long operational life.
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View Product DetailsTwo Roller Crushers, commonly referred to as double roller crushers, operate on a highly efficient mechanical principle that leverages massive compressive pressure and shear forces to reduce the size of geological and industrial minerals. Unlike impact crushers, which rely on high-velocity kinetic energy, roller crushers compress materials between two parallel, counter-rotating drums. This minimizes the production of unwanted fines and dust, making it the preferred system for applications where specific grain-size distribution is critical.
At the center of this crushing technology is the precise adjustment of the roll gap (or nip setting). As raw materials feed into the V-shaped gap above the rotating drums, friction draws them into the gap. The compression ratio is defined by the roll diameter and the physical nip angle (typically optimized between 31 and 33 degrees). Our engineering department designs these systems using high-chromium alloy materials and advanced shock-absorption systems to ensure steady operations under load.
Achieves a tight product distribution curve by avoiding impact-shattering, securing uniform product output.
Heavy-duty spring or hydraulic systems release uncrushable elements instantly, preventing shaft or motor damage.
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Why Henan Ascend delivers premium mechanical performance at optimized global acquisition points.
We source high-grade raw manganese and chromium alloys directly from specialized metallurgy hubs. Our roller shells utilize Mn13Cr2 or customized high-chromium casting processes, boosting wear resistance by up to 45% compared to standard carbon steels.
By operating inside Henan's major industrial manufacturing ecosystem, we leverage integrated casting, CNC precision milling, thermal treatment, and computerized dynamic balance testing loops to accelerate engineering timelines and maintain ISO 9001 quality compliance.
Every roller shaft is subjected to ultrasonic non-destructive testing (NDT) to identify micro-fractures prior to assembly. Fully integrated test runs are performed under simulated operational loads for 24 continuous hours before final container loading.
From primary aggregate preparation to fine mineral separation, our equipment provides specialized answers across diverse geological fields.
Our heavy double roller crushers serve as primary pre-conditioning modules before wet pan mill or ball mill gold grinding plants. By reducing quartz and gold-bearing ores to a uniform particle size distribution of <3mm, wet pan mills achieve higher recovery rates with reduced energy consumption per ton of processed ore.
In vertical shaft impact (VSI) crusher circuits, two-roller crushers function as secondary sizing screens and shape adjusters. They reduce recirculating loads and guarantee that the final sand product maintains a highly consistent cubical shape index, satisfying strict concrete composition requirements.
In processing coal, clay, coke, and salt, keeping dust emissions low and reducing fines is critical. Our toothed double roller models crush materials using shear force along structural boundaries. This prevents pulverization, maintaining the energy properties and physical value of the end product.
Compare standard configurations of our premium Two Roller Crusher systems. We offer customization to accommodate unique hardness, moisture, and throughput requirements.
| Model Designation | Roll Size (Dia × Width) | Feed Particle Size (mm) | Output Adjustments (mm) | Throughput Capacity (t/h) | Motor Rating (kW) |
|---|---|---|---|---|---|
| 2PG-400×250 | Φ400 × 250 mm | ≤ 25 mm | 2 - 8 mm | 5 - 10 t/h | 5.5 × 2 kW |
| 2PG-610×400 | Φ610 × 400 mm | ≤ 40 mm | 2 - 10 mm | 15 - 30 t/h | 15 × 2 kW |
| 2PG-800×600 | Φ800 × 600 mm | ≤ 50 mm | 2 - 15 mm | 30 - 60 t/h | 30 × 2 kW |
| 2PG-1000×700 | Φ1000 × 700 mm | ≤ 60 mm | 2 - 20 mm | 50 - 90 t/h | 45 × 2 kW |
| 2PG-1200×800 | Φ1200 × 800 mm | ≤ 80 mm | 3 - 25 mm | 80 - 150 t/h | 75 × 2 kW |
Review our customized, functional plant designs and logistics successes deployed across Africa, Central Asia, and Southeast Asia.
Complete gold extraction circuit integrating two roller primary crushers, gold wash plants, and high-recovery shaking tables to optimize gold concentrate yields.
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Engineered to handle hard silica ores with minimal roller wear. Incorporates advanced safety relief components to prevent down-time caused by structural iron contaminants.
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A high-performance plant configuration deployed in Southeast Asia, providing optimized sizing for wet pan mills and downstream magnetic separations.
Learn More →How automation and environmental regulations are shaping the next generation of double roller crushing machinery.
Modern operations demand precision. Our latest roller designs offer digital gap adjustments using smart hydraulic systems. Sensors monitor discharge sizing and roll wear in real-time, adjusting gap distance automatically to protect the system without stopping production.
Traditional belt-driven systems can suffer up to 12% energy loss through friction. Modern plant designs use direct coupling or shaft-mounted gear reducers, lowering energy consumption and providing higher torque efficiency at lower RPMs.
With environmental rules tightening globally, next-generation roller crushers are built with fully enclosed frames and integrated dust collection outlets. This containing design reduces noise levels and helps operations meet safety guidelines.
Established in 2005 and situated in the high-tech zone of Zhengzhou City, Henan Province, Henan Ascend Machinery has become a leading manufacturer in China's heavy mining equipment industry.
Our business scope covers the entire product lifecycle: from research and development to custom manufacturing, global sales, and after-sales support. We specialize in complete systems for crushing, grinding, screening, feeding, and mineral concentration. Our machinery is trusted by operators in over 130 countries, with a strong presence in Africa, Central Asia, and Southeast Asia.
If you need to crush limestone, granite, aggregates, or other ores into precise powder, or require gold extraction plants, our engineering team can provide tailormade solutions. Because we manufacture directly, we guarantee high component quality, reliable operations, and competitive factory-direct pricing.
Find technical answers to frequently asked questions about selecting, operating, and pricing two roller crusher systems.
The price of a two roller crusher depends primarily on the drum dimensions (diameter and width), the thickness of the wear-resistant roll skin, the motor brand (such as Siemens or ABB vs. standard regional motors), and the hydraulic adjustment configuration. Direct factory sourcing from Henan Ascend lowers procurement costs by eliminating mid-tier trade commissions, while also ensuring direct access to customized structural options.
Roll skins are the primary wearing parts of the machine. Utilizing premium alloy compositions like Mn13Cr2 or high-chrome cast iron significantly extends the wear life of the shell, reducing replacement frequency. Selecting higher-grade alloy roll skins increases the initial purchase price but lowers the total cost of ownership (TCO) by reducing maintenance downtime and increasing throughput capacity over the machine's lifetime.
Yes, provided the machine is configured correctly. For sticky materials or clay-rich ores, we install custom scrapers and use toothed roller profiles instead of smooth drums. The toothed teeth break through sticky clumps, while mechanical scrapers clean the roll surfaces on each rotation, preventing materials from clogging the crushing chamber.
Smooth rollers are designed for fine crushing, delivering high compressive force to achieve output sizes from 1mm to 8mm. Toothed rollers are better suited for coarse and medium crushing of medium-hard materials like coal, shale, or limestone. They use shearing and splitting actions to handle larger input sizes while minimizing dust and fines.
We supply electric systems customized to regional grid requirements (e.g., 380V/50Hz/3Phase, 440V/60Hz/3Phase, or custom voltages). We also provide diesel-engine driven mobile roller systems for mining sites that lack reliable access to electrical grids.
Browse our additional equipment, including grinding mills, gravity separators, and thermal processing solutions, engineered for maximum mineral extraction rates.
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