What Is an Impact Crusher and What Can It Do for You?

Dec 6, 2019

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An impact crusher, or impactor, is one of several types of crushing machines, including jaw crushers, hammermills, and cone crushers, that is manufactured for the purpose of processing raw materials, like concrete or asphalt, among many others, to reduce them in size.

Used in a wide variety of applications, including aggregate crushing, asphalt crushing, and concrete crushing, etc., an impactor is unique to its crusher counterparts in that it breaks apart rocks and stones by rapidly striking the material as opposed to utilizing a pressure force.

The mechanical structure of an impact crusher is defined by its rotor, the primary instrument for breaking apart material. The rotor is set among mounted plates, anvils, or aprons, inside a heavy housing; these aprons or anvils serve to bear the impact of the materials being processed and further break them apart.

What Is an Impact Crusher and What Can It Do for You?

There are two styles of impact crushers: horizontal shaft impactors (HSI) and vertical shaft impactors (VSI). The distinguishing feature between these two styles is the physical orientation of the rotor within the impactor.

The rotor of a horizontal shaft impactor is oriented horizontally and utilizes blow bars or hammers to strike flowing material with great force in order to break it. Horizontal shaft impactors are useful as both primary or secondary crushers and are able to crush a wide range of materials, from soft rock to much harder materials.

When a horizontal shaft impactor operates, the rotor spins around its shaft at a high velocity. As material flows into the chamber, the rotor’s blow bars repeatedly strike the materials, breaking them apart and sending them into the hanging aprons, resulting in additional reduction.

A vertical shaft impactor’s rotor is oriented vertically, and instead of relying on striking material with great force, it relies on launching material at high speeds to be impacted upon anvils or even other rocks configured around the perimeter of the rotor. Vertical shaft impactors are limited in the feed size they can process and are used as secondary or tertiary crushers only.

When a vertical shaft impactor operates, material is fed into the chamber from above the spinning rotor. The material enters the rotors rapidly moving wings and is hurled outward to be broken upon the peripheral anvils or rocks.

The final size of material being processed by an impact crusher is partially determined by the rotational speed of its rotor. As the rotor operates at higher velocities, material is reduced to a finer and finer specification. Additionally, how closely the aprons are in relation to the rotor can further determine material size; the closer the aprons, the finer the output.

The impact crusher is popular because it can be used for a variety of material processing applications in a variety of configurations, making it a versatile crusher to own. From soft rock to hard rock—as a primary crusher or secondary crusher—the impact crusher can be custom calibrated to ensure your success.

Eagle Crusher UltraMax® Impactors are the most durable and reliable horizontal shaft impactors on the market today. Originally designed to process the toughest high-volume steel rebar with ease, UltraMax® Impactors outperform the competition across multiple applications—aggregate, asphalt, concrete recycling, and more.

Performing the job of a primary and secondary crusher in one unit, UltraMax® Impactors are built for high volume production and ultra-high reduction rations to produce high quality cubical product with minimal fines.

For complete UltraMax® Impactor product specifications, please visit its product page.

Serious Projects Demand Eagle Crusher.

Eagle Crusher consistently leads the industry in new product innovations. We stand by our products with unsurpassed service and support to make your job easier.

Get serious. Get Eagle Crusher.

• Durability and longevity
• 24-hour parts and service
• American made
• Highest productivity and profits
• High resale value
• Celebrating 100+ years of service

Previous Posts

Understanding the financial programs available to you

Understanding the financial programs available to you For the past decade, interest rates have been at historical lows, however with increasing interest rates and inflation, new equipment prices might come as a shock. The use of the proper financial programs can help...

Counting Down to CONEXPO-CON/AGG 2023

Counting Down to CONEXPO-CON/AGG 2023 Eagle Crusher is excited to be exhibiting at CONEXPO-CON/AGG and to celebrate being only 4 months away from CONEXPO-CON/AGG, we’re taking a look at our last four times exhibiting at CONEXPO-CON/AGG.   2020 Exhibiting at...

Maximizing Your Crushing Equipment Layout

Maximizing Your Crushing Equipment Layout There’s no time to waste when it comes to crushing your production output goals, so you want to make sure your crushing equipment layout is right for the job. That’s why we’re taking a closer look into the layout of your...

Preparing for Cold Crushing

Preparing for Cold Crushing It’s that time of the year again, where temperatures in the northern hemisphere start to drop. You know that crushing in the cold, or shutting down your operation, isn’t too far away. The easiest way for your operation to freeze is by not...

A History of Eagle Crusher Manufacturing

A History of Eagle Crusher Manufacturing on National Manufacturing Day October 7th is National Manufacturing Day, and on this important day for American manufacturing, we wanted to share a little bit of history on our more that 100 years of manufacturing crushing,...

CONEXPO-CON/AGG Preparation

The 6-month mark to CONEXPO-CON/AGG has officially been passed, but your preparations shouldn’t be at a stand-still. Now is the time to check these items off your list to relieve you from the stress of planning and to save the most money. It’s easy to stay...

Maximizing profit by choosing between renting and owning equipment

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The Power of the Jaw Crusher

The Power of the Jaw Crusher While there are many different types of crushers to accomplish a variety of tasks, they generally fall within two types, impact crushers and compression crushers. One of the most common compression crushers on the market today are jaw...

Optimizing Hopper Feeder Safety

Optimizing Hopper Feeder Safety No matter how well crushing machines are designed to protect their operators from injury, manufacturers can never completely safeguard for moments of error, oversight, and even disregard. While it may be tempting to cut corners in order...

The Importance of Asphalt Recycling and Crushing

The Importance of Asphalt Recycling and Crushing We are all familiar with asphalt, driving on 4 million miles of road in the continuous United States, but did you know about the reclaiming asphalt pavement (RAP) process and how it saves you millions of dollars in...

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