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2. Breaker (hydraulic) - Wikipedia

   en.wikipedia.org/wiki/Breaker_(hydraulic)

   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.

3. Jackhammer - Wikipedia

   en.wikipedia.org/wiki/Jackhammer

   A hydraulic breaker may be fitted to heavy equipment such as an excavator or backhoe, and is widely used for roadwork, quarrying, construction sitework, and general demolition. [22] These larger machine mounted breakers are known as rig mounted, or machine mounted breakers.

4. Hydraulic hammer - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_hammer

   Hydraulic hammer may refer to: Breaker (hydraulic) , a powerful percussion hammer fitted to an excavator for demolishing hard structures Hydraulic hammer, a type of piling hammer

5. Circuit breaker - Wikipedia

   en.wikipedia.org/wiki/Circuit_breaker

   A magnetic–hydraulic circuit breaker uses a solenoid coil to provide operating force to open the contacts. A magnetic–hydraulic breaker incorporates a hydraulic time delay feature using a viscous fluid. A spring restrains the core until the current exceeds the breaker rating.

6. Hydraulic machinery - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_machinery

   The hydraulic fluid reservoir holds excess hydraulic fluid to accommodate volume changes from: cylinder extension and contraction, temperature driven expansion and contraction, and leaks. The reservoir is also designed to aid in separation of air from the fluid and also work as a heat accumulator to cover losses in the system when peak power is ...

7. How The World Bank Broke Its Promise to Protect the Poor

   projects.huffingtonpost.com/worldbank-evicted...

   Then a line of hulking excavators moved in, using their hydraulic claws to smash homes into pieces. Within hours, the neighborhood was a ruin. Bimbo Omowole Osobe, a former resident of the Badia East slum who was evicted in 2013 when her neighborhood was demolished, sits in the clinic where she now sleeps at night in the reception area.