4 1/4 Cone Crusher Specifications

The 4 1/4 cone crusher is one of the most widely used models in the mining and aggregate industries. Its reputation for reliability, durability, and high efficiency has made it a go-to solution for crushing a variety of hard and medium-hard rocks. This model, also known as the 4 1/4 Symons cone crusher, belongs to the Symons series of cone crusher, which have been in use for several decades. In this article, we will discuss the specifications, features, and applications of the 4 1/4 cone crusher.

Overview of the 4 1/4 Cone Crusher

The 4 1/4 cone crusher is part of a series designed by Symons, a well-known manufacturer of crushing equipment. This crusher is typically used as a secondary or tertiary crusher in crushing plants, meaning it is used to further reduce the size of materials after the primary crushing stage. Its design allows it to crush a wide range of materials, including hard rocks like granite, basalt, and limestone, as well as softer materials like sandstone.

Key Specifications of the 4 1/4 Cone Crusher

The specifications of the 4 1/4 cone crusher define its performance capabilities, determining how well it can handle various crushing tasks. Below are the essential specifications:

1. Capacity

• The 4 1/4 cone crusher can process between 150 and 410 tons per hour (TPH), depending on the material hardness and size, feed conditions, and settings. It is particularly effective in medium to large-scale mining and quarry operations.

2. Feed Opening

• The feed opening, or the size of the material that can enter the crusher, is critical for effective crushing. For the 4 1/4 cone crusher, the maximum feed size is around 220 mm (8.66 inches), which allows the machine to handle medium to large-sized rocks efficiently.

3. Crushing Cavity

• The crushing cavity refers to the space where the material is crushed between the moving mantle and the stationary bowl liner. The 4 1/4 cone crusher is available in multiple cavity designs, such as fine, medium, and coarse, allowing users to select the most suitable one based on the material being processed and the desired output size.

4. Adjustable Closed Side Setting (CSS)

• The 4 1/4 cone crusher has an adjustable closed side setting (CSS), which is the smallest gap between the mantle and the concave during the crushing cycle. This setting can be adjusted to control the output size of the crushed material. Typically, the CSS ranges from 3 mm to 38 mm (0.12 to 1.5 inches), allowing for flexibility in producing different sizes of aggregate or ore.

5. Motor Power

• The crusher is powered by an electric motor with a power rating of around 200-220 kW (268-300 HP). This high-powered motor enables the crusher to handle large volumes of material efficiently, even in demanding applications.

6. Weight

• The total weight of the 4 1/4 cone crusher is approximately 23,000 kg (50,700 lbs). This weight includes the crusher’s frame, motor, and other key components. Despite its heavy-duty construction, the 4 1/4 cone crusher can be transported relatively easily to different work sites.

7. Dimension

• The overall dimension of the 4 1/4 cone crusher is around 2800 mm (110 inches) in length, 2300 mm (90.5 inches) in width, and 3200 mm (126 inches) in height. This compact size allows it to be installed in a variety of crushing circuits.

Design and Features

1. Symons Cone Design

The 4 1/4 cone crusher follows the Symons design principles, which emphasize durability and high-performance crushing. Its design features a rotating mantle that moves within a concave bowl, applying compressive force to the material and breaking it down into smaller pieces. The crushing action is continuous, ensuring efficient material reduction.

2. Hydraulic Adjustment System

Modern versions of the 4 1/4 cone crusher come equipped with a hydraulic adjustment system, allowing operators to quickly and easily adjust the crusher’s settings. This system simplifies maintenance and helps achieve more consistent product sizes.

3. Effective Lubrication System

To ensure reliable operation, the 4 1/4 cone crusher is equipped with a forced lubrication system that keeps critical parts like the bearings and gears well-lubricated, reducing wear and extending the machine’s lifespan.

4. Robust Frame and Construction

The 4 1/4 cone crusher is designed with a robust steel frame, which supports its heavy-duty operation and makes it suitable for use in tough mining and quarrying conditions. This sturdy construction ensures minimal downtime and resistance to mechanical stress.

Applications of the 4 1/4 Cone Crusher

The 4 1/4 cone crusher is highly versatile and is used across a range of industries. Its ability to handle different types of materials and crushing stages makes it suitable for:

1. Mining Operations

In mining, the 4 1/4 cone crusher is used for crushing various ores, including copper, gold, iron ore, and others. Its robust design makes it suitable for secondary and tertiary crushing stages in mineral processing plants, where it reduces the size of ore before further refining or processing.

2. Aggregate Production

The 4 1/4 cone crusher is a popular choice in aggregate production, where it is used to produce crushed stone, gravel, and sand. It is typically used in secondary crushing stages, where the material has already been reduced by a primary crusher, such as a jaw crusher.

3. Quarrying

In quarrying applications, this crusher is used to crush a variety of hard materials like granite, basalt, and limestone. Its efficient crushing action helps produce high-quality aggregate for use in construction projects, including road building, concrete mixing, and asphalt production.

4. Construction and Demolition Recycling

The 4 1/4 cone crusher is also employed in construction and demolition recycling applications. It can crush old concrete, bricks, and other materials, turning them into reusable aggregate that can be used for new construction projects.

The 4 1/4 cone crusher stands out as a reliable and versatile machine used across various industries for crushing medium to hard materials. Its specifications—including capacity, feed opening, adjustable CSS, and robust construction—make it an ideal choice for secondary and tertiary crushing applications in mining, quarrying, and aggregate production. With its proven Symons design and advanced features like hydraulic adjustment and forced lubrication, the 4 1/4 cone crusher continues to be a valuable asset in modern crushing operations.