What Are Blow Bars and What Can They Do for You?

Feb 7, 2020

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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 into an impact crusher’s rotor where they are able to strike material needing processed.

As an important component of horizontal shaft impact crushers, blow bars come into direct contact with material and provide a powerful impact force. HSI crushers and their blow bars are designed to fracture material quickly, resulting in high production rates and reduced costs-per-ton when compare to other types of crushers.

Many styles of blow bars exist, varying in size and metallurgy, which is determined by the type of material being crushed and the desired output. The range of metallurgies includes low chrome blow bars, medium chrome, high chrome, and also a hybrid alloy, each offering their own unique advantage when crushing materials.

What Are Blow Bars and What Can They Do for You?

The amount of chrome mixed into the design of a blow bar determines how well the part can withstand abrasive materials: the more chrome in a blow bar, like in high chrome bars, the more effective it can crush highly abrasive materials, like asphalt. Medium chrome blow bars are valuable for processing a variety of materials while low chrome bars can be useful for crushing aggregate and concrete.

On the other hand, the amount of chrome mixed into a blow bar can also determine how susceptible the blow bar is to fracturing. When crushing reclaimed materials that might include metal contaminates like rebar, high chrome blow bars are more likely to fracture. Meanwhile, low chrome bars are better at withstanding the impact of rebar and other metal contaminants.

As the rotor of a horizontal shaft impact crusher runs and material is fed into the crusher chamber, the material comes into contact with the rapidly spinning blow bars which strike them with a great force over and over. The repeatedly impacted material quickly fractures and reduces in size until it is the appropriate size to be released from the chamber.

Due to the repetitive crushing that blow bars endure, they will wear down over time. Their composition and how often they are used will determine how often they will need flipped or replaced. Stocking fresh blow bars so that material is being impacted by smooth, uniform edges will contribute to maintaining high production rates.

Developed by expert metallurgists and manufactured exclusively by Eagle Crusher, our genuine blow bars are designed to extend wear life, provide a perfect fit for your impactor, and increase production rates while decreasing costs-per-ton. Eagle Crusher blow bars are available in a variety of metallurgies to accommodate your unique crushing needs.

For complete Eagle Crusher genuine blow bar product specifications, please visit this page.

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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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