Breaker (hydraulic)
（重定向自Hydraulic breaker）
![A breaker is mounted on the excavator on the left side](/Images/godic/202501/19/Warsaw_Excavator_0064840.jpg")
![Hydraulikhammer LST XB 5100 iS (Masse ca. 5 t) beim Abbruch eines Bunkers. Zu erkennen sind die Schlauchanschlüsse für Zu- und Abfluss des Öls, der Meißel sowie das nach unten verjüngte Gehäuse.](/Images/godic/202501/19/Hydraulikbreaker_LST_XB5100is_2009-014840.jpg")
![Hydraulikhammer](/Images/godic/202501/19/Hydraulikhammer4840.jpg")
![CAT-Kettenbagger mit Abbruchhammer](/Images/godic/202501/19/Retznei_P70810184840.JPG")
A breaker is a powerful percussion hammer fitted to an excavator for demolishing concrete structures or rocks. 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.