鉱山設備ガイド：What Equipment Should You Use for Medium-Hard Material Crushing in Highways, Quarries and Mines? A Complete Guide to PF Series Impact Crushers

The PF series impact crusher is an efficient crushing equipment that uses impact energy to crush materials. It can handle various hard rock materials with a side length not exceeding 500mm and compressive strength not exceeding 350 MPa, such as basalt, granite, river pebbles, limestone, and so on. It is widely used for crushing and shaping hard materials in industries such as mining, sand and gravel plants, water conservancy and hydropower, highways, railways, chemical, and building materials. Why choose the PF series impact crusher? First, the machine has a simple structure, without key connections, and features a unique impact plate design. It efficiently crushes hard rock while saving energy, simplifies the crushing process, and reduces production costs. Second, the products are cubic in shape, with adjustable discharge size, resulting in good particle shape and reasonable gradation. Third, it uses impact energy to crush materials, has a high crushing ratio, and can crush large materials into smaller sizes in one pass, reducing the number of crushing stages. The PF series impact crusher is mainly used for medium and fine crushing operations in mining, aggregate production and shaping lines in sand and gravel plants, stone processing for hydropower projects, pavement material crushing for highway and railway construction, and raw material crushing in chemical and building material industries. People who need the PF series impact crusher include mining companies, sand and gravel plants and aggregate producers, road and bridge construction units, hydropower project contractors, procurement departments of chemical and building material companies, EPC contractors for crushing and screening production lines, equipment dealers and stockists, and overseas mining and building material project buyers. When should you choose or replace a PF series impact crusher? When medium-hard materials (compressive strength not exceeding 350 MPa) need medium and fine crushing and shaping; when there are high requirements for product particle shape, aiming for cubic shape and reasonable gradation; when you want to simplify the crushing process, reduce the number of crushing stages, and lower production costs; when the old impact crusher’s blow bars are severely worn, or its capacity or product particle shape is inadequate; when a new sand and gravel aggregate production line requires medium and fine crushing equipment. How to choose a PF series impact crusher? First, confirm the material’s compressive strength to ensure it does not exceed 350 MPa. Second, confirm the maximum feed size to ensure it does not exceed 500 mm, and choose a model corresponding to the feed opening size. Third, confirm the production capacity and select a model within the 30-350 t/h range according to the production line requirements. Step 4: Confirm motor power, and choose a motor of 37-375 kW based on processing capacity and material hardness; Step 5: Confirm rotor specifications, and select a rotor of 1000×700 to 1320×2000 mm according to feed size and processing capacity; Step 6: Confirm installation foundation, the impact crusher needs to be installed on a solid concrete foundation and fixed with anchor bolts; Step 7: Confirm the material of wear parts, selecting high-chrome alloy or high-manganese steel hammers and impact plates according to material abrasiveness; Step 8: Confirm environmental protection and automation configuration, it can be equipped with dust removal system and central control system.

Model example: `PF-1210`, meaning PF series impact crusher, 12 indicates rotor diameter about 1250 mm, 10 indicates rotor width about 1050 mm.

PF Series Impact Crusher Model and Parameter Table (Specifications and Performance Parameters)

Model	Specification (Rotor size mm)	Feed opening size (mm)	Maximum feed size (mm)	Production capacity (t/h)	Power (kW)	Weight (t)
PF-1007	1000×700	400×730	300	30-50	37-55	9.5
PF-1010	1000×1050	400×1080	350	50-80	55-75	14
PF-1210	1250×1050	400×1080	350	70-120	110-132	17
PF-1214	1250×1400	400×1430	350	130-180	132-160	22
PF-1315	1320×1500	860×1520	500	160-250	180-260	26
PF-1320	1320×2000	860×2030	500	300-350	300-375	30

Structural Diagram Component Description

Serial number	Component name	Function description
1	Rear casing	Protects the internal rotor and impact frame, facilitates opening for maintenance
2	Impact lining	Bears the impact of material, wear part, replaceable
3	Impact frame	Installs impact lining, adjusts discharge gap
4	Lining	Protects the inside of the casing, extends equipment life
5	Feed port	Channel for material to enter the crushing chamber
6	Base	Supports overall machine weight, fixed on concrete foundation
7	Hammer	Core wear part that impacts material at high speed
8	Rotor frame	Installs hammers, rotates at high speed to generate impact energy

General Technical Parameters Table

Parameter	Specification
Series	PF
Type	Impact Crusher
Applicable Material Compressive Strength	≤350MPa
Maximum Feed Size	300-500mm
Rotor Specification	1000×700–1320×2000mm
Feed Opening Size	400×730–860×2030mm
Production Capacity	30-350t/h
Motor Power	37-375kW
Weight	9.5-30t
Crushing Stage	Medium Crushing, Fine Crushing, Shaping
Core Advantages	Simple Structure, Keyless Connection, Cubic Product Shape, Adjustable Discharge Size, High Efficiency and Energy Saving

Dimension Diagram and Key Dimensions: `[Image: /images/pf-impact-crusher-dimension-drawing.webp]`

Material Table

Component	Standard Material	Optional Material	Description
Frame / Rear Housing / Base	High Strength Cast Steel / Welded Carbon Steel	Wear-resistant Steel Plate	Bears crushing reaction force, requires high rigidity
Hammer	High Chromium Alloy	High Manganese Steel, Martensitic Steel	Core Wear Parts, Highly Wear-resistant
Impact Plates / Liners	High Manganese Steel (ZGMn13)	High Chromium Cast Iron, Alloy Steel	Withstands high-speed impact, extends service life
Rotor frame	40Cr/42CrMo Forgings	Cast Steel	Quenched and Tempered, withstands high torque
Bearing	Spherical Roller Bearing	Double-row cylindrical roller bearing	Bear heavy loads and impacts
Impact frame	Cast Steel	Welded structural components	Adjust discharge clearance, overload protection
Motor	All-copper coil motor	Explosion-proof motor	Standard three-phase asynchronous motor
Control box	Carbon steel/Stainless steel	Rainproof and dustproof type	Optional frequency conversion speed regulation

Installation method: PF series impact crushers need to be installed on a solid concrete foundation that can withstand the equipment's own weight and the huge impact load during crushing operations; during installation, ensure the foundation is level as required, and anchor bolts tightened to the specified torque; after the equipment is in place, adjust the level to ensure the rotor and motor shafts are parallel; the motor and crusher are connected by a V-belt or direct coupling, which requires adjustment of belt tension or alignment to ensure smooth transmission; the adjustment mechanism of the impact frame must be flexible to ensure the discharge clearance meets the finished product size requirements; after installation, perform a no-load test run, check whether the rotor rotates smoothly, no abnormal vibration or noise, and confirm the hammer and impact plate gaps are even; during the load test run, gradually increase the feed amount, observe the crushing effect and motor current, ensuring it does not exceed the rated current; a dust removal system must be equipped to reduce dust pollution; a central control system can be equipped for online monitoring and automatic control.

Application scenario table

Industry	Application	Recommended configuration	Key requirements
Mining	Medium and fine crushing, shaping operations	PF-1210–PF-1320	High crushing ratio, high processing capacity, wear resistance
Sand and gravel plant	Aggregate production line medium & fine crushing and shaping	PF-1010–PF-1315	Good particle shape, reasonable grading
Highway	Pavement material crushing	PF-1214–PF-1320	High output, cubic particle shape
Railway construction	Ballast Stone Processing	PF-1210–PF-1315	Adjustable Product Granularity, Energy-Saving
Hydropower	Sand and Gravel Aggregate Production	PF-1315–PF-1320	High Capacity, High Reliability
Chemical Building Materials	Raw Material Crushing	PF-1007–PF-1010	Simple Structure, Easy Maintenance
Construction Waste	Concrete Block Crushing	PF-1210–PF-1214	Anti-Rebar Tangling (Optional Configuration)

Note: The PF series impact crusher is suitable for medium-hard materials with compressive strength not exceeding 350MPa, with a maximum feed size of 300-500mm. The hammer and impact plate are the core wear parts; for high-abrasion materials, high-chrome alloy material is recommended. Impact crushers are not suitable for processing high-hardness materials (such as quartzite) or materials with excessive moisture and stickiness. Explosion-proof motors are required in explosive environments.

Selection Notes (Compared with Jaw and Cone Crushers): The core differences between the PF series impact crusher and jaw and cone crushers lie inthe crushing principle, applicable material hardness, and finished product shape.The jaw crusher uses the compression crushing principle, suitable for materials of all hardness levels, mainly for coarse crushing, with large feed size and high crushing ratio, but the finished product is mostly flaky. The cone crusher also uses compression crushing, mainly for medium to fine crushing of high-hardness materials, with high capacity and better product shape, but with high equipment investment. The impact crusher uses the impact crushing principle, suitable for medium-hard materials with compressive strength not exceeding 350MPa, producing cubic finished products with good shape and reasonable gradation, high crushing ratio, and can simplify the crushing process, but hammer wear is fast, and it is not suitable for ultra-hard materials. In selection, jaw crushers are preferred for coarse crushing of high-hardness materials, cone crushers are preferred for medium-fine crushing of high-hardness materials, and PF series impact crushers are preferred for medium-fine crushing of medium-hard materials with high requirements for product shape.

## Technical FAQ

1. What is the PF series impact crusher?

The PF series impact crusher is a high-efficiency crushing device that uses impact energy to crush materials. It can handle various hard rock materials with a feed size not exceeding 500mm and compressive strength not exceeding 350 MPa and is widely used for crushing and shaping medium-hard materials.

2. What is the processing capacity of the PF series impact crusher?

The processing capacity is 30-350 t/h, depending on the model. PF-1007 is 30-50 t/h, PF-1320 is 300-350 t/h.

3. What is the maximum feed size of the PF series impact crusher?

The maximum feed size is 300-500 mm, depending on the model. PF-1007 is 300 mm, PF-1315 and PF-1320 are 500 mm.

4. What is the motor power of the PF series impact crusher?

The motor power is 37-375 kW, depending on the model. PF-1007 is 37-55 kW, PF-1320 is 300-375 kW.

5. What is the working principle of the PF series impact crusher?

It uses impact energy to crush materials. When materials enter the hammer action area, they are impacted and broken by the high-speed hammer, then thrown onto the impact device, and then bounced back from the impact plate to the hammer action area to be impacted again. The materials are crushed repeatedly from large to small within the crushing chamber until they reach the required size and are discharged from the bottom of the machine.

6. What is the structural composition of the PF series impact crusher?

It mainly consists of the rear frame, impact plate, impact rack, plate lining, feed port, base, hammer, rotor frame, and other components. The structure is simple, has no key connections, and features a unique impact plate design.

7. What materials are suitable for the PF series impact crusher?

It is suitable for various medium-hard materials with a compressive strength not exceeding 350 MPa, such as basalt, granite, river pebbles, limestone, etc.

8. What are the wear parts of the PF series impact crusher?

The wear parts include hammers, impact plates, and liners, among which the hammer is the main wear part. It is recommended to choose high-chromium alloy or high-manganese steel.

9. Does the PF series impact crusher need a foundation?

Yes. It needs to be installed on a solid concrete foundation, which must withstand the equipment's weight and the huge impact load during crushing operations, and is secured with anchor bolts.

10. What are the common faults of the PF series impact crusher?

Wear or breakage of hammer (material too hard or overload), wear of impact plate (highly abrasive material), bearing overheating (poor lubrication or overload), rotor imbalance (uneven hammer wear or foreign object blockage), discharge port blockage (uneven feeding or discharge port too small).

11. What is the difference between the PF series impact crusher and a jaw crusher?

The jaw crusher uses the principle of compression crushing, suitable for materials of various hardness, mainly for coarse crushing, and the finished product is mostly needle-like; the impact crusher uses the principle of impact crushing, suitable for medium-hard materials, with cubic and well-shaped finished products, mainly for medium and fine crushing and shaping.

12. What is the difference between the PF series impact crusher and a cone crusher?

The cone crusher uses the principle of compression crushing, mainly for medium and fine crushing of high-hardness materials, has high processing capacity, and the finished product has a better shape, but the equipment investment is high; the impact crusher uses the principle of impact crushing, suitable for medium-hard materials, with cubic and well-shaped finished products, but the hammer wears quickly.

13. Can the PF series impact crusher handle construction waste?

It can process concrete blocks and other construction waste, but attention should be paid to prevent rebar entanglement. It is recommended to choose anti-rebar entanglement configurations or pre-treat to remove rebar.

14. Can the PF series impact crusher be used in a mobile crushing station?

Yes, the PF series impact crusher is one of the commonly used main machines in mobile crushing stations. Tire-type or crawler-type mobile impact crushing stations are suitable for construction waste treatment, road and bridge construction, and other scenarios requiring frequent relocation.

15. What is the service life of the hammer of the PF series impact crusher?

The hammer life depends on the abrasiveness, hardness of the material, and feeding method. High-chrome alloy hammers can last hundreds of hours when processing medium-hard materials. For highly abrasive materials, higher-grade wear-resistant materials need to be selected.

16. Can the PF series impact crusher be customized?

Yes, it can be customized in motor power, hammer material (high-chrome alloy/high manganese steel/martensitic steel), motor configuration (explosion-proof motor), dust removal system, central control system, variable frequency speed regulation, etc.

17. What is the crushing ratio of the PF series impact crusher?

The crushing ratio of a counterattack (impact) crusher is usually 10-20, and can reach up to 50, depending on the hardness of the material and the adjustment range of the discharge gap. It can crush large pieces of material into smaller sizes in a single pass.

18. How to adjust the discharge particle size of the PF series impact crusher?

The discharge particle size is controlled by adjusting the gap between the impact rack and the hammer. The smaller the gap, the finer the finished product; the larger the gap, the coarser the finished product.

19. Does the PF series impact crusher comply with RoHS and REACH?

The standard equipment complies with RoHS and REACH regulations and does not contain SVHC (Substances of Very High Concern). The specifics are subject to the product test report.

20. How to maintain the PF series impact crusher?

Regularly check the wear of the hammers and replace or adjust them in time; regularly check the wear of the impact plates and liners; regularly check bearing lubrication and supplement or replace grease; regularly check the belt tension; regularly check whether anchor bolts and connection bolts are loose; regularly clean accumulated material and debris in the crushing chamber.

Technical FAQ

What data should I send for a crusher quotation?

Provide material type, maximum feed size, capacity, required product size, moisture, working hours and the upstream and downstream equipment.

How do I compare two crusher models?

Compare the same duty point: capacity, feed opening, discharge range, motor power, wear-part life, maintenance access and total operating cost.

Authoritative references

For standards and safety context, see ISO standards and the U.S. Mine Safety and Health Administration. Confirm the exact local requirements for your project.

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