PF Series Impact Crusher
The PF Series Impact Crusher uses high-speed rotating blow bars to shatter material through impact energy, producing cubical-shaped particles ideal for construction aggregate, concrete, and asphalt production. Unlike compression crushers, the impact crusher generates minimal flaky or elongated particles, producing high-quality cubic aggregate that meets specifications for concrete, road base, and railway ballast. With crushing ratios up to 20:1, the PF crusher can reduce large feed to specification in a single pass. LIMING's impact crushers feature chrome-alloy blow bars with reversible design for extended wear life, heavy-duty rotor construction, and hydraulic opening for easy access.
Working Principle
Material enters the crushing chamber and is struck by high-speed rotating blow bars (40-60 m/s tip speed). The impact shatters the material, which is then thrown against impact plates (breaker plates) for secondary crushing. Material bounces between blow bars and plates, undergoing multiple impact events until it reaches the desired size and exits through the discharge opening. The gap between blow bars and impact plates is adjustable, controlling output particle size.
The grinding process is precisely controlled by the integrated classification system, which separates qualified fine powder from coarse particles. Coarse particles fall back to the grinding chamber for regrinding, while fine powder is conveyed by airflow to the cyclone collector and then to the finished product silo. This closed-circuit design ensures consistent product quality and high grinding efficiency.
Key Features & Advantages
Cubic Product Shape
Impact crushing produces cubical particles with minimal flakiness, ideal for concrete and asphalt aggregate specifications.
High Crushing Ratio
Up to 20:1 reduction ratio enables single-stage crushing in many applications, eliminating the need for multiple crushers.
Reversible Blow Bars
Chrome-alloy blow bars can be reversed when one side wears, doubling wear life and reducing replacement frequency.
Hydraulic Opening
Hydraulic cylinder opens the crusher housing for safe, quick access to internal components for inspection and maintenance.
Adjustable Impact Plates
Breaker plate gap is adjustable to control output particle size and compensate for wear.
Applications & Industry Use
This equipment is widely used across multiple industries for various powder processing applications:
- Concrete aggregate production
- Asphalt aggregate
- Road construction material
- Railway ballast
- Building stone
- Recycling concrete and asphalt
Processable Materials
The versatile design of this equipment allows it to process a wide range of non-metallic minerals and industrial materials. Below are some of the most commonly processed materials. For detailed grinding solutions for each material, please visit our materials page.
Technical Specifications
The following table provides detailed technical parameters for each model in this product series. These specifications are based on standard configurations and may vary depending on material properties and specific application requirements. Contact our engineering team for customized configurations.
| Model | PF-1007 | PF-1214 | PF-1320 | PF-1520 |
|---|---|---|---|---|
| Rotor Dia x Length (mm) | 1000x700 | 1200x1400 | 1300x2000 | 1500x2000 |
| Max Feed (mm) | 300 | 350 | 500 | 600 |
| Capacity (t/h) | 30-70 | 80-160 | 150-260 | 260-380 |
| Power (kW) | 45-55 | 110-132 | 200-250 | 300-400 |
Performance & Efficiency
The PF Series Impact Crusher is designed for maximum grinding efficiency and energy savings. The optimized grinding chamber geometry, combined with high-precision classification, ensures that energy is used effectively for particle size reduction rather than wasted on over-grinding or heat generation. Compared to conventional milling systems, our equipment typically achieves 20-30% lower power consumption per ton of finished powder.
Key performance metrics include stable fineness control with deviation less than 5%, low noise levels below 75 dB at 1 meter distance, and dust emissions below 20 mg/m3 when equipped with our pulse bag filter system. These performance characteristics make our equipment suitable for even the most demanding industrial environments and stringent environmental regulations.
Installation & Commissioning
Proper installation is critical for optimal equipment performance and longevity. Our experienced engineers provide on-site installation and commissioning services, including equipment positioning, alignment, electrical connection, piping installation, and system integration. The typical installation timeline ranges from 15 to 45 days depending on equipment model and production line complexity.
During commissioning, we conduct comprehensive performance tests including no-load test, load test, and production trial runs. We verify all performance parameters meet design specifications, calibrate control systems, train your operators on proper operation and maintenance procedures, and deliver a complete commissioning report with all test data.
Frequently Asked Questions
Impact crushers produce cubical-shaped aggregate, while jaw crushers produce more flaky particles. Cubical aggregate is preferred for concrete and asphalt. Impact crushers also have higher crushing ratios, reducing the number of crushing stages needed.
Blow bar life depends on material hardness. For limestone, expect 3-6 months. For granite, 1-3 months. Chrome-alloy bars last longer than standard steel bars. Reversible design doubles effective wear life.
Impact crushers can handle moderate moisture content (up to 8%). For very wet or sticky materials, a grizzly feeder or pre-screening may be needed to prevent clogging.