Breaker (hydraulic)

A breaker is mounted on the excavator on the left side

A breaker is a powerful percussion hammer fitted to an excavator for demolishing hard (rock or concrete) structures. It is powered by an auxiliary hydraulic system from the excavator, which is fitted with a foot-operated valve for this purpose. Additionally, demolition crews employ the hoe ram for jobs too large for jackhammering or areas where blasting is not possible due to safety or environmental issues.

Breakers are often referred to as "hammers", "peckers", "hoe rams" or "hoe rammers". These terms are popular and commonly used amongst construction/demolition workers.[1][2] The first hydraulic breaker, Hydraulikhammer HM 400, was invented in 1967 by German company Krupp (today German company Atlas Copco) in Essen.[3]

## See also

* Excavator

## References

1. ↑ New Mexico State Highway and Transportation Department - Hoe Ram
2. ↑ "Mobile Hydraulic Hammer". http://arrowmaster.com/hammer.shtml.
3. ↑ "The hydraulic breaker is now 50 years old". https://www.aggbusiness.com/categories/breaking-drilling-blasting/features/the-hydraulic-breaker-is-now-50-years-old/.

Info on hydraulic breaker repairs and maintenance

## Bibliography

* Association of Equipment Manufacturers (2010). Carrier Mounted Hydraulic Breaker: Safety Manual for Operating and Maintenance Personnel. https://books.google.com/books?id=mNBDygAACAAJ.

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