Secondary Impact Crushing
A horizontal-shaft impact crusher that produces high-quality cubical aggregate by shattering medium-hard materials with high-speed blow bars. Feeding 300-700mm with capacities from 30 to 2,000 t/h — ideal for limestone, concrete recycling, and road-base aggregate production.
Product Overview
The impact crusher — also known as a horizontal shaft impact (HSI) crusher — reduces material by the high-speed impact of rotating blow bars against the feed and the subsequent collision of material against adjustable impact plates (curtains). A rotor fitted with blow bars spins at 250-700 rpm; material fed into the top is struck by the blow bars, hurled across the chamber into the impact plates, and fractured. This process repeats until the particles are small enough to exit through the bottom opening.
The impact crusher's greatest advantage is its ability to produce cubical, well-graded product with low flakiness — a critical requirement for concrete aggregate, asphalt, and railway ballast. In cement plants, impact crushers serve as secondary crushers after the primary jaw crusher, producing raw meal feed of the right fineness and shape. They are also extensively used in construction-waste and concrete recycling, where cubical shape and controlled fines are valued.
Unlike compression crushers (jaw, cone), impact crushers use kinetic energy to shatter material along its natural cleavage lines — producing fewer micro-cracks in the aggregate and preserving its structural strength. LIMING impact crushers feature heavy-duty rotors, high-chromium or martensitic steel blow bars, and hydraulically adjustable impact plates for precise product control.
Key Benefits
Engineered for superior product shape, high throughput, and easy maintenance.
Impact crushing along natural cleavage planes produces cubical, low-flakiness aggregate ideal for high-strength concrete and asphalt — meeting the strictest quality specifications.
Single-stage reduction ratios up to 15:1 reduce the number of crushing stages required, lowering capital cost, building height, and energy consumption per ton of product.
Impact plate gap and rotor speed are hydraulically adjustable for precise product-size control. The hydraulic housing opening enables fast, safe access for blow bar inspection and replacement.
Heavy-duty welded rotor with replaceable wear liners. High-chromium and martensitic blow bars handle abrasive feed. Optional third impact plate for finer product and higher reduction.
Technical Data
PF series horizontal shaft impact crusher models for secondary crushing.
| Model | Rotor Ø × Length (mm) | Max Feeding (mm) | Capacity (t/h) | Motor Power (kW) | Weight (t) |
|---|---|---|---|---|---|
| PF Series — Horizontal Shaft Impact Crusher | |||||
| PF-0807 | 850×700 | 300 | 30-50 | 37-55 | 4.5 |
| PF-1007 | 1000×700 | 350 | 50-80 | 55-75 | 6.0 |
| PF-1010 | 1000×1000 | 350 | 80-120 | 90-110 | 8.5 |
| PF-1210 | 1250×1000 | 400 | 110-180 | 132-160 | 12.5 |
| PF-1214 | 1250×1400 | 400 | 150-220 | 185-220 | 17.0 |
| PF-1315 | 1320×1500 | 500 | 180-280 | 220-280 | 20.5 |
| PF-1320 | 1320×2000 | 500 | 250-380 | 315-355 | 26.0 |
| PF-1520 | 1500×2000 | 600 | 350-500 | 400-500 | 32.0 |
| PF-1620 | 1600×2000 | 650 | 500-700 | 500-630 | 40.0 |
| PF-1820 | 1800×2000 | 700 | 700-1,200 | 710-900 | 55.0 |
| PF-2020 | 2000×2000 | 700 | 1,000-1,500 | 900-1,100 | 68.0 |
| PF-2030 | 2000×3000 | 700 | 1,500-2,000 | 1,100-1,500 | 95.0 |
* Specifications are for reference only. Actual capacity depends on material hardness, feed gradation, and rotor speed. Contact LIMING for model selection.
How It Works
The impact crusher reduces material by high-speed impact energy. The rotor, fitted with blow bars, spins at high speed; feed material is struck by the blow bars and hurled against impact plates. The repeated impact fractures the material along its natural cleavage planes, producing cubical product.
Frequently Asked Questions