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

Which Blow Bars Are Right For You?

Which blow bars are right for your job? Blow bars are thick slabs of metal, typically some mixture of chrome, that are cast for the purpose of effectively breaking apart material like asphalt, concrete, limestone, etc. Often in sets of 3 or 4, blow bars are inserted...

Mobile Vs Portable Rock Crushers: The Pros and Cons

Mobile Vs Portable Rock Crushers: The Pros and Cons We all know that different material processing jobs present unique challenges and with the current world market, buying the right crushing equipment is critical to keeping your company up and crushing. One of the...

Staying Safe During Warm Weather Crushing

Staying Safe During Warm Weather Crushing As the summer months roll in, bringing higher temperatures and more sun exposure with it, operating portable crushing and screening plants at outdoor locations can become more demanding and introduce new safety hazards to team...

Why It Is Important To Have Critical Spares On Hand

Why It Is Important To Have Critical Spares On Hand Downtime is the enemy to productivity when you have a job to do, so you want to be prepared by keeping critical spares on hand. Having critical spares on hand allows for the minimal downtime of replacing the part in...

What Are Crushers?

What Are Crushers? Crushers are machines designed to reduce large materials, typically rocks, concrete or asphalt, into smaller materials for purposes of sizing, recycling, reduction, and more. These crushers are typically found in quarries, mines, recycling...

Eagle Crusher at World of Asphalt / AGG1 2022

Did you miss Eagle Crusher at World of Asphalt / AGG1? No worries, we’ve got you covered. Eagle Crusher was one of the 440 companies showing at the record-breaking World of Asphalt / AGG1 in Nashville, Tennessee this year. With over 11,000 attendees, Eagle Crusher was...

How To Startup Your Crushing Equipment This Spring

How To Startup Your Eagle Crusher Crushing Equipment This Spring Now that Spring is officially here, that means warmer temperatures to help with the startup of the plants that were inactive over the winter. Your service manuals and vendor books have more detailed...

All You Need To Know About The UltraMax® 69X

All you need to know about the UltraMax® 69X in one place. From horizontal shaft impactors to jaw crushers, Eagle Crusher manufactures some of the toughest and most powerful crushing equipment on the market, empowering producers to conquer any size crushing project....

Why Choose Eagle Crusher?

Why choose Eagle Crusher? Let’s face it, heavy equipment like rock crushers can be expensive, so a lot of time is likely to be spent on researching  equipment as well as the companies that manufacture them before you put the ink to paper. At Eagle Crusher, we...

Introducing the RapiDeploy® 1000

At Eagle Crusher, we pride ourselves in developing products that meet our customers needs. That’s why we’ve taken our popular RapiDeploy® 500 plant and enlarged it: Introducing the RapiDeploy® 1000 The RapiDeploy® 1000 features our powerful Ultramax® UM-15 impactor...

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