
Symons Cone Crusher
What Exactly Is a Symons Cone Crusher?
Symons Cone Crusher is a compression-type crusher that works by squeezing material between a moving mantle and a stationary concave to achieve size reduction. It is frequently found in the metallurgical, construction, road building, chemical, and silicate industries.
Its primary purpose is to break hard and medium-hard ores and rocks, such as iron ore, copper ore, limestone, quartz, and granite, into smaller, more uniformly sized pieces. The equipment is valued for its sturdy structure and its ability to produce a consistent product shape, which plays an important role in many downstream processes.

How Does a Symons Cone Crusher Work?
Symons Cone Crusher's working principle is based on the laminating crushing concept, where material is fed from the top and crushed between a gyrating mantle and a stationary concave. This process involves several key mechanical actions that work together to achieve efficient size reduction and equipment protection.
Crushing action: The gyrating motion of the mantle creates a compressive force that crushes the rock against the crushing chamber walls.
Safety mechanism: A spring release system acts as a safety device that allows uncrushable material to pass through without damaging the machine.
Size adjustment: The gap between the mantle and the concave, known as the discharge opening, can be adjusted according to specific product size requirements.
The Technical Specifications of a Symons Cone Crusher
This equipment is available in multiple standard models, each with specific dimensional and performance parameters. The following table lists the key specifications for Symons Cone Crusher across different cavity types.
| Model | Cone Diameter | Cavity Type | Feed Opening (Closed Side) | Feed Opening (Open Side) | Discharge Setting Range | Capacity | Motor Power | Weight | Overall Dimension |
| 3FT | 900 mm | Standard Fine | 83 mm | 102 mm | 9-22 mm | 45-91 t/h | 75 kW | 15 t | 2821×1880×2164 mm |
| 3FT | 900 mm | Standard Coarse | 159 mm | 175 mm | 13-38 mm | 59-163 t/h | 75 kW | 15 t | 2821×1880×2164 mm |
| 3FT | 914 mm | Short Head Fine | 13 mm | 41 mm | 3-13 mm | 27-90 t/h | 75 kW | 15 t | 2821×1880×2410 mm |
| 4.25FT | 1295 mm | Standard Fine | 109 mm | 137 mm | 13-31 mm | 109-181 t/h | 160 kW | 27 t | 2800×2342×2668 mm |
| 4.25FT | 1295 mm | Standard Medium | 188 mm | 210 mm | 16-38 mm | 132-253 t/h | 160 kW | 27 t | 2800×2342×2668 mm |
| 4.25FT | 1295 mm | Standard Coarse | 216 mm | 241 mm | 19-51 mm | 172-349 t/h | 160 kW | 27 t | 2800×2342×2668 mm |
| 4.25FT | 1295 mm | Short Head Fine | 29 mm | 64 mm | 3-16 mm | 36-163 t/h | 160 kW | 27 t | 2800×2342×2668 mm |
| 5.5FT | 1676 mm | Standard Fine | 188 mm | 209 mm | 16-38 mm | 181-327 t/h | 240-250 kW | 55 t | 3911×2870×3771 mm |
| 5.5FT | 1676 mm | Standard Medium | 213 mm | 241 mm | 22-51 mm | 258-417 t/h | 240-250 kW | 55 t | 3911×2870×3771 mm |
| 5.5FT | 1676 mm | Standard Coarse | 241 mm | 268 mm | 25-64 mm | 299-635 t/h | 240-250 kW | 55 t | 3911×2870×3771 mm |
| 5.5FT | 1676 mm | Short Head Fine | 35 mm | 70 mm | 5-13 mm | 90-209 t/h | 240-250 kW | 55 t | 3917×2870×3771 mm |
| 7FT | 2134 mm | Standard Fine | 253 mm | 278 mm | 19-38 mm | 381-726 t/h | 315-400 kW | 110 t | 4613×3251×4732 mm |
| 7FT | 2134 mm | Standard Medium | 303 mm | 334 mm | 25-51 mm | 608-998 t/h | 315-400 kW | 110 t | 4613×3251×4732 mm |
| 7FT | 2134 mm | Standard Coarse | 334 mm | 369 mm | 31-64 mm | 789-1270 t/h | 315-400 kW | 110 t | 4613×3251×4732 mm |
The Key Advantages of Using a Symons Cone Crusher
This equipment offers several practical benefits for operators, all of which contribute to reliable, efficient, and cost-competitive crushing operations. These advantages come from its thoughtful design and solid engineering.
Structural reliability: The equipment has a sturdy structure that is well-suited for long-term, stable operation.
Production efficiency: It shows good performance in terms of capacity and produces a uniform product particle size.
Operational convenience: The machine offers flexible adjustment capabilities and relatively convenient maintenance procedures.
Component protection: Good sealing helps prevent dust and contaminants from entering the lubrication system, thereby extending the service life of components.
Economic operation: Its design emphasizes cost-effectiveness, helping to reduce operating costs.
Where Is a Symons Cone Crusher Applied?
This product is a commonly used piece of equipment across many industries, valued for its ability to produce consistently shaped, high-quality aggregates and ore products. Its wide applicability makes it a frequent choice for various large-scale projects.
Mining sector: Extensively used for crushing ores in metallurgical operations.
Aggregates industry: Supplies materials for road construction, building, and concrete production.
Chemical and silicate industries: Used where crushing hard materials is required for further processing.
High-grade production: Suitable for producing cubical-shaped aggregates for asphalt and high-grade concrete.

How to Choose the Right Symons Cone Crusher for Your Needs?
Choosing the right equipment mainly involves considering your desired output size and production capacity, which will help you determine whether the standard type or the short head type is more appropriate. Taking into account material hardness and feed size can also assist you in making a proper decision.
Target product size: If you need a finer product, the short head type with its steeper crushing chamber is a worthy consideration. For coarser output, the standard type is recommended.
Capacity requirements: The size of Symons Cone Crusher, such as the commonly used three-foot, four-and-a-quarter-foot, or seven-foot models, is related to its throughput capability.
Material characteristics: Evaluate the hardness and abrasiveness of your feed material so that the selected equipment can be equipped with suitable wear parts.
FAQ
What does the "standard" and "short head" type mean for a Symons Cone Crusher?
This refers to the shape of the crushing chamber. The standard type has a relatively larger feed opening and is used for coarse to medium crushing. The short head type has a steeper crushing chamber and is designed for fine crushing, producing a smaller product size.
How is the discharge opening of a Symons Cone Crusher adjusted?
Adjustment is typically achieved by rotating the bowl or the adjustment ring, which raises or lowers the concave and changes the gap between it and the mantle. This allows the operator to control the final product size as needed to meet specific requirements.
What kind of routine maintenance does a Symons Cone Crusher require?
Regular maintenance is fairly important for the service life of the equipment. This includes daily checks of the oil level and lubrication system, periodic inspection of wear parts like the mantle and concave, and making sure all fasteners are secure. Proper lubrication is a key factor for the reliable operation of this product.
What materials can this product handle effectively?
The equipment is versatile and performs well with hard and medium-hard materials. This includes a wide range of ores like iron ore and copper ore, as well as rocks such as granite, limestone, sandstone, and quartzite. Its rugged design makes it suitable for handling abrasive materials.
Can this product be used in a mobile plant?
Yes, the size and rugged nature of Symons Cone Crusher make it suitable as a component for mobile crushing plants. It can be integrated into a track-mounted or wheeled chassis to provide a flexible and efficient crushing solution for various job sites.




