The fine jaw crusher is an improved version of the jaw crusher, designed specifically for secondary and fine crushing operations. It is suitable for secondary crushing of materials such as ores, construction waste, and rocks. Compared with traditional jaw crushers, fine jaw crushers offer finer output particle size, higher crushing ratios, and lower energy consumption. They are widely used in industries such as mining, building materials, metallurgy, and chemicals.
Core Advantages
• Strong fine crushing capacity: Adjustable output particle size (10-100mm) to meet varying fineness requirements.
• High efficiency and energy saving: Optimized chamber design increases crushing efficiency by over 20% and reduces energy consumption by 15%.
• Stable structure: High-strength cast steel frame and wear-resistant jaw plates provide a longer lifespan.
• High adaptability: Capable of handling high-hardness materials (such as granite and basalt) and wet and sticky materials. Working Principle of a Fine Jaw Crusher
The fine jaw crusher uses a "curved extrusion" crushing method. An electric motor drives the eccentric shaft, causing the movable jaw plate to perform periodic reciprocating motion, squeezing, splitting, and crushing the material.
Workflow
• Feeding: Material enters the crushing chamber from the feed inlet.
• Extrusion Crushing: The movable jaw plate moves toward the fixed jaw plate, squeezing and crushing the material.
• Discharge: Crushed material is discharged from the discharge port, with the particle size controlled by an adjustment device.
Key Point: The fine jaw crusher's deeper crushing chamber allows the material to undergo multiple crushing cycles within the chamber, ensuring more uniform discharge.
Fine Jaw Crusher Models and Technical Parameters
Different fine jaw crusher models are suitable for different production and particle size requirements. The following is a comparison of common models and their parameters:
| Model | Feed Inlet Size (mm) | Maximum Feed Size (mm) | Discharge Inlet Adjustment Range (mm) | Processing Capacity (t/h) | Motor Power (kW) |
| PE250×400 | 250×400 | 210 | 20-80 | 5-20 | 15 |
| PEX150×750 | 150×750 | 120 | 10-40 | 8-35 | 15-30 |
| PEX250×1000 | 250×1000 | 210 | 15-50 | 15-50 | 30-55 |
Selection Recommendations:
• Small-scale production: PE250×400 (suitable for laboratory or small-scale production).
• Medium and fine crushing requirements: PEX150×750 (for construction waste and limestone crushing).
• High-yield fine crushing: PEX250×1000 (for granite and iron ore crushing).
Fine Jaw Crusher Applications
• Mining Industry: For secondary crushing of iron ore, gold ore, and copper ore.
• Construction waste treatment: Crushing concrete and bricks for resource recycling.
• Sand and gravel aggregate production: In conjunction with cone crushers and sand making machines, it produces high-quality machine-made sand.
• Chemical and Metallurgical Industry: For crushing materials such as coke and gangue.
Case Study: A building materials company uses a PEX250×1000 fine jaw crusher to process construction waste, keeping the output particle size below 20mm for direct brick making, resulting in annual cost savings exceeding 500,000 yuan.
Fine Jaw Crusher vs. Standard Jaw Crusher vs. Cone Crusher
| Comparison Items | Fine Jaw Crusher | Conventional Jaw Crusher | Cone Crusher |
| Crushing Method | Cranking Extrusion | Cranking Extrusion | Spinning Crushing |
| Output Particle Size | Fine (10-100mm) | Coarse (50-300mm) | Fine (3-60mm) |
| Crushing Ratio | High (6-8) | Medium (4-6) | High (8-10) |
| Applicable Materials | Medium-hard Materials | Hard Rock, Coarse Crushing | High-hard Materials, Fine Crushing |
| Energy Consumption | Low | Medium | High |
How to Choose?
• Coarse Crushing Needs → Standard Jaw Crusher
• Medium and Fine Crushing Needs → Fine Jaw Crusher
• Ultra-Fine Crushing Needs → Cone Crusher + Sand Maker
Fine Jaw Crusher Price and Purchasing Recommendations
Price Range
• Small Fine Jaw Crusher (PE Series): 50,000-150,000 RMB
• Medium Fine Jaw Crusher (PEX Series): 150,000-500,000 RMB
• Large Customized Models: 500,000 RMB+
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