Are spring cones and Simmons cones the same?

Spring cones and Simmons cones are essentially the same type of equipment, but “Simons cone” specifically refers to cone crushers that utilize a spring safety system, while “spring cone” is a broader term. The following analysis focuses on five dimensions: definition, structure, performance, application scenarios, and current development.

Definition and Scope
Spring cone crusher: A general term for cone crushing equipment that utilizes a spring mechanism for overload protection and discharge opening adjustment, encompassing a variety of models and technological iterations.
Simons cone crusher: Specifically refers to a cone crusher that utilizes a spring safety system. This classic spring cone crusher was invented by the Simmons Brothers Company in the United States and is named after its inventor.

Structural Features
Spring cone crushers: Overload protection is achieved through a spring mechanism. When non-crushed material enters the crushing chamber, the spring is compressed, increasing the discharge opening size, allowing the foreign material to be expelled and automatically reset. Its structure includes a main shaft, eccentric bushing, crushing cone, fixed cone, adjustment mechanism, dust protection, and safety device. Simmons cone crusher：a typical spring cone crusher, features a core spring safety system and utilizes a laminated crushing principle. This design improves crushing efficiency through optimized cavity geometry and high swing frequency. Its main shaft and eccentric bushing form a rotary swing crushing mechanism, equipped with a spring overload protection system and dry oil/water sealing technology.

Performance Comparison
Spring Cone Crusher
Crushing Efficiency: Overload protection relies on spring elasticity, so efficiency is limited by spring performance.
Product Particle Size: Particle size uniformity is affected by spring adjustment accuracy.
Stability: The spring overload protection stroke is limited, resulting in low cavity clearing efficiency.
Maintenance Ease: The spring mechanism requires regular inspection and maintenance, making disassembly and assembly complex.
Symons Cone Crusher
Crushing Efficiency: Crushing efficiency is significantly improved through optimized cavity shape and high-oscillation frequency design.
Product Particle Size: Utilizing a laminated crushing principle, the product achieves uniform particle shape and low flake content.
Stability: The hydraulic system enables precise adjustment of the discharge port size and rapid cavity clearing, resulting in strong operational stability.
Maintenance Ease: The modular structure facilitates assembly and disassembly, and key components are manufactured from highly wear-resistant materials, reducing maintenance time.

Application Scenarios
Spring Cone Crusher: Widely used in metal and non-metallic mining, building materials, metallurgy, and other industries, suitable for medium and fine crushing of medium- to high-hardness ores.
Symons Cone Crusher: Widely used in metal and non-metallic mining, cement plants, construction, sand and gravel metallurgy, and other industries, particularly for applications requiring high particle size uniformity and low flake content. Current Development Status
Spring Cone Crusher: With the advancement of hydraulic technology, the market position of spring cone crushers has gradually declined. Hydraulic cone crushers, due to their more efficient overload protection and cavity clearing functions, have gradually become mainstream.
Symons Cone Crusher: As a classic model, the Symmons cone crusher has maintained its market vitality through technological upgrades (such as the addition of a hydraulic cavity clearing function). However, due to the demand for high-energy lamination crushing, it is gradually being replaced by hydraulic cone crushers.