Advantages and Disadvantages of Multi-Cylinder Hydraulic Cone Crushers

1. Advantages

(1) No upper frame cone sleeve structure, reducing manufacturing complexity

The intersection point of the moving cone's swing centre in a multi-cylinder hydraulic cone crusher extends beyond the top of the moving cone, forming a virtual suspension point that does not require fixation. This reduces manufacturing complexity and prevents suspension point deviation caused by processing errors; In contrast, single-cylinder hydraulic cone crushers have an upper suspension point, which is the intersection of the moving cone's swing motion, supported by a set of sliding bearings. This requires higher precision. If processing errors cause this point to deviate from the theoretical point, it will result in changes to the contact area of the bronze sleeve, leading to excessive local stress and premature failure of the bronze sleeve.

(2) Adoption of automatic lubrication via a thin oil station

During operation, multi-cylinder hydraulic cone crushers primarily rely on a thin oil lubrication system for lubrication and cooling. As long as the lubrication system is activated, all moving parts receive adequate lubrication, preventing damage to rotating components due to insufficient lubrication; In contrast, single-cylinder hydraulic cone crushers are designed with a sliding bearing at the top cone sleeve position, which requires manual grease application for lubrication, increasing the labour intensity for workers and potentially causing damage to the cone sleeve and shaft sleeve due to insufficient lubrication.

(3) Limited restriction on over-iron travel due to part shape 

Multi-cylinder hydraulic cone crushers are externally equipped with multiple safety cylinders, which serve to tighten and secure the fixed cone and provide over-iron protection. Since they are designed externally, they are less constrained by part shapes and theoretically have sufficient lifting space; however, the over-iron travel of single-cylinder hydraulic cone crushers is primarily determined by the drop height of the main shaft. Increasing the travel would result in structural changes and increased costs, so the over-iron travel is generally limited.

(4) Diverse crushing chamber types and convenient switching 

Multi-cylinder hydraulic cone crushers can be freely switched from standard coarse cavities to short-head ultra-fine cavities by simply replacing the crushing wall, bowl liner, and adapter ring, without needing to change the frame, thereby meeting the requirements of medium and fine crushing operations. In contrast, single-cylinder hydraulic cone crushers typically find it difficult to transition from coarse to fine crushing, even if multiple cavity types are available, as the range is relatively narrow and adjustments such as eccentricity must be made.

(5) Transition from floating single-cylinder to fixed multi-cylinder

Multi-cylinder hydraulic cone crushers feature multiple hydraulic cylinders distributed circumferentially. These cylinders exert high pressure, providing sufficient tensile force to ensure the stationary cone remains stable during normal material crushing. This maintains consistent discharge opening gaps and relative stability of moving parts, ensuring product consistency. In contrast, single-cylinder hydraulic cone crushers have only one hydraulic cylinder at the bottom. Under the influence of crushing material loads, the moving cone floats up and down, causing the main shaft and bronze sleeve to move both circumferentially and vertically, which affects the service life of the bronze sleeve and causes changes in the discharge opening, resulting in fluctuations in the crushed product.

(6) Fixed main shaft bronze sleeve, less prone to damage 

In a multi-cylinder hydraulic cone crusher, the moving cone does not move up and down during operation, so the bronze sleeve always performs circular motion, ensuring smooth operation and reduced wear; in a single-cylinder hydraulic cone crusher, the moving cone is supported by the bottom hydraulic cylinder, and under load, the main shaft floats up and down, causing the bronze sleeve to experience both circular and vertical friction, thereby shortening its service life.

(7) High product yield 

Multi-cylinder hydraulic cone crushers adopt a large eccentric design, typically 1.5 times that of single-cylinder cone crushers. This results in greater material compression during layer compression crushing, a higher crushing ratio, and a higher product yield, effectively reducing energy consumption.

(8) Stable particle shape 

The moving cone of the multi-cylinder hydraulic cone crusher does not float up and down, and the discharge opening remains relatively stable, resulting in a more stable particle shape. In contrast, the moving cone of the single-cylinder hydraulic cone crusher floats up and down, causing small changes in the discharge opening, resulting in less stable particle shapes compared to the multi-cylinder hydraulic cone crusher.

(9) Compact footprint  

Multi-cylinder hydraulic cone crushers require less maintenance space, have a lower overall height, and are easier to disassemble and reassemble.  

2. Disadvantages  

Compared to single-cylinder hydraulic cone crushers, multi-cylinder hydraulic cone crushers have a more complex structure, slightly higher weight, and higher manufacturing costs.

Through years of product development and practical application in multiple mining crushing systems, it has been proven that multi-cylinder hydraulic cone crushers feature high production capacity, large crushing ratio, good product particle shape, low energy consumption, high automation, high production efficiency, convenient operation and maintenance, and low maintenance costs and wear part expenses. The system's energy consumption is reduced by approximately 15% on average, achieving excellent application results and receiving high recognition from users. Our company manufactures various models of multi-cylinder hydraulic cone crushers. Please click on the website customer service for free consultation, available 24/7.