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The growth of the social economy has triggered the urbanization process acceleration. It has caused the demand for aggregate for building, raising aggregate Supply at a very high rate.

As a result, the aggregate crusher demand increases rapidly in the current years. The aggregate screening machinery gets mainly purposed for crushing pebbles, gravels, granite, stone materials, and basalts. It creates an essential raw material source for construction companies to meet the rising demands of the infrastructures.

The task of choosing the ideal primary crusher meant for your defined aggregate Services application is vital. A primary crusher is a thrust behind the plant's success. There is a perfect successful process that should be adhered to when it comes to choosing the primary crusher and understanding how it looks like. A person should start with the purpose of the crusher. He should then move to the refining model and end with a complete installation. The whole process is requiring Aggregate Services to achieve the primary goal.


Since 1923 JW Bell is a leader in aggregate processing equipment. As a dealer, manufacturer, and service center we work directly with producers to provide the best equipment available to maximize productivity.

Choosing appropriate crusher

The initial step in the choice of primary crusher occurs at the high-level place. It is necessary to figure out the essential purpose of the crusher and what it get intended for.


This purpose is fundamental since it precedes and controls the whole process of decision-making. At times guidance measure becomes a necessity, and also a certain level of experience becomes a requirement.

The two major components to put in place during the purpose identification are the size of the feed and the material type for crushing.


Other vital factors must get considered: the site's long-term strategy, material moisture content, gradation of the discharge, and the estimated production amount.

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1. Gyratory crushers

These get purposely used in case the amount of production targeted exceeds a million tons in a year. These machines get devised to get completed in more than a year from the time of the request.


On top of that, another month meant for installation on the designated site. As a result, they become ideal for plants intended for long-term goals. They are best suited for abrasive materials, like granite.

2. Jaw crushers

These are the most commonly used workhorse crushers. They are ideal for abrasive materials and are portable in comparison with gyratory crushers.


Due to its compression mode, the machine mostly produces the most granular material simply because it crushes the rock at natural weakness lines. As part of the primary stage solution, jaw crushers are ideal for subsequent rock preparation processing stages, for example, washing and classification.

Efficiency tips

• Preference of the grease over oil lubrication system
• Radial clearance inspection of the main frame to bear wear tracking
• Minimal setting on the discharge to fit a full load
• Periodic sampling bearing oil
• Sufficient tension on the conveyors

Feeding for efficiency

Uniform feed material distribution around the cone intake is a good practice. It creates an ideal environment for consistent production, increasing the efficiency and the reliability of the crusher operation.

3. Impact crushers

These are perfect suits for materials that are less abrasive, e.g., limestone. They are also known to have vast costs of wear which increase over time. They are known to provide better reduction and even a possibility of a good shape.


They utilize mass and velocity in the process of feed material breakdown. At first, there is a reduction of the feed materials immediately; it enters the crusher and comes into contact with rotor hammers. Another breakage happens as the fabric gets channeled into the breaker plates.


They are ideal when the shape is critical and the feed material is less abrasive. The processing of crushing in impact crushers breaks a rock in its natural line of weakness, thus producing a perfect product quality when it comes to shapes. The rate has become ideal for roadstones and aggregates that get highly specified in terms of the application.

Efficiency tips

• Solid rotor type for primary impactors for the reduction of costs related to maintenance
• 110% utilization when impactors have horsepower connected. Speed, setting, and crusher application should be regulated to achieve its utilization.
• Even feeding of the impactors
• A precise requirement of the calculations to meet the ideal material penetration

Feeding efficiency

Size reduction dramatically relies on the rock's conveyed energy from the rotor, which starts with feed. The first impact determines 60% of the overall crushing action, with the rest being against the breaker bar, which is adjustable.



JwBell provide In-Shop

Repairs - minor repairs to complete unit rebuilds.