Double Roller Crusher

• Ultra-Low Over-Crushing & Low Powder Rate: Adopts double roller slow-speed extrusion crushing instead of high-speed impact crushing. Materials are crushed by natural extrusion along the texture, with extremely low fine powder content. The finished products have uniform particle size and complete grain shape, perfectly solving the excessive powder problem of impact crushers.
• Accurate Discharge Particle Size Control: Equipped with precise gap adjustment device between the two rollers. Users can freely adjust the discharge particle size according to production needs, realizing arbitrary switching between medium crushing, fine crushing and sand making, with high finished product precision.
• Simple & Compact Structure: The whole machine has a highly integrated modular design with fewer transmission components. The structure is compact, covering small floor space, convenient for on-site installation and transportation, suitable for both fixed stations and mobile crushing lines.
• Low Noise & Energy Saving: Low-speed roller operation avoids high-speed impact noise and violent vibration. The double roller crusher runs smoothly with low noise and low power consumption, meeting environmental protection production standards and reducing long-term power cost.
• Wear-Resistant Roller & Long Service Life: The roller surface adopts high-chromium alloy wear-resistant layer or high manganese steel integrated forging process. It has strong compression resistance and wear resistance, not easy to stick materials, effectively extending the service life of core components.
• Automatic Overload Protection: Equipped with spring buffer and hydraulic protection device. When uncrushable hard foreign matter enters the crushing cavity, the rollers automatically retract to release pressure and discharge impurities, protecting the main machine from damage and avoiding shutdown failure.
• Easy Maintenance & Low Operating Cost: Few vulnerable parts and standardized accessories. The roller surface can be repaired and reused, reducing replacement frequency. Daily maintenance only requires regular lubrication and surface cleaning, with low technical threshold and low comprehensive operating cost.

• Coal industry crushing and fine processing of raw coal, coal gangue and coal slime
• Building materials industry crushing of limestone, bluestone, feldspar, quartz stone and gypsum
• Fine sand making and particle shaping of river stone, pebble and medium-soft aggregates
• Chemical and metallurgy industry fine crushing of brittle industrial raw materials
• Construction waste recycling, concrete and brick material fine processing
• Small and medium-sized aggregate plants low-powder fine crushing production

• Reinforced Heavy-Duty Frame: Integral welded steel frame with high overall rigidity and strong pressure resistance, effectively bearing the extrusion force generated by material crushing, avoiding frame deformation and ensuring long-term stable operation.
• Dual Symmetrical Crushing Rollers: Divided into fixed roller and movable roller, operating in opposite directions. The thickened wear-resistant roller skin ensures uniform material extrusion and crushing, avoiding material sticking and uneven discharging.
• Precision Gap Adjustment Mechanism: Adopts screw or hydraulic integrated adjustment structure, which can accurately control the gap between the two rollers, realizing precise adjustment of discharge particle size and meeting diverse production standards.
• Spring Hydraulic Buffer Protection System: The core safety component of the double roller crusher. When encountering hard foreign matters, the movable roller automatically retracts to release pressure, realizing safe overload protection and automatic reset.
• Stable Transmission Device: Matched with high-precision gear and belt transmission structure, ensuring synchronous and stable operation of the two rollers, uniform feeding and crushing, and no material blocking.
• Sealed Dust-Proof Structure: Adopts fully enclosed shell design to effectively restrain dust overflow during crushing, improving on-site working environment and meeting environmental protection requirements.

• Smooth Double Roller Crusher: Pure extrusion crushing, small feeding size, easy to block when processing wet sticky materials, low output for bulk materials, suitable for fine crushing and sand making of dry medium-soft materials.
• Hammer Crusher: High-speed impact crushing, high powder rate, serious over-crushing, large material loss, suitable for general crushing but poor for lump material retention.
• Toothed Roll Crusher: Tooth shear & split crushing, large bulk feeding, anti-blocking for wet materials, ultra-low powder rate, high lump ore retention rate, specially customized for coarse and medium crushing of coal, gangue and various sticky soft materials.

FAQ About Toothed Roll Crusher

• Q1: What materials is the toothed roll crusher suitable for? A1: The toothed roll crusher is professionally used for medium-soft and sticky bulk materials, including raw coal, coal gangue, shale, clay, limestone, weathered stone and high-moisture industrial materials. It is the best choice for coal and brick making production lines.
• Q2: What is the difference between toothed roll and smooth roll crusher? A2: Toothed roll crusher adopts tooth shear crushing with large feeding size and anti-blocking function, suitable for coarse/medium crushing of bulk wet materials. Smooth roll crusher uses pure extrusion crushing, suitable for fine crushing and sand making of dry materials with smaller feeding size.
• Q3: Can the toothed roll crusher process wet and sticky materials? A3: Yes. The optimized staggered tooth structure effectively avoids material adhesion and accumulation. It can stably crush high-moisture wet coal, clay and other sticky materials without blocking, which solves the core pain point of ordinary crushers.
• Q4: Does the toothed roller crusher produce much powder? A4: No. It adopts shear splitting crushing instead of high-speed impact, with extremely low over-crushing rate. The finished products are mainly uniform blocks with few fine powders, greatly improving the utilization rate of lump materials.
• Q5: Is the tooth roller easy to wear and replace? A5: The roller teeth are made of high-strength wear-resistant alloy with long service life. The modular tooth structure supports partial single-tooth replacement, no need to replace the whole roller, which saves maintenance time and spare part cost.
• Q6: Is the discharge particle size adjustable? A6: Yes. Equipped with precise gap adjustment device, users can freely adjust the discharge gap to switch between coarse crushing and medium crushing modes, meeting different particle size requirements.
• Q7: What working scenarios are exclusive for toothed roll crusher? A7: It is exclusively suitable for coal washing plant raw coal processing, brick factory clay crushing, wet sticky material pretreatment, bulk soft stone primary crushing and large-output low-powder block material production projects.