The rock splitter mounted on an excavator is a more powerful rock breaking equipment developed based on handheld rock splitters. It is installed on excavators and uses the hydraulic power from excavators. It is mainly used to excavate huge and hard rocks. Compared with traditional blasting, there is no vibration, flying stones and noise. Whether it is a hand-held rock splitter or a rock splitter mounted on an excavator, core point lies in wedge groups. For years of technical research and practice, ultra-high-strength and durable wedge groups have been developed by our company, which have extremely low friction coefficient, so that it efficiently transmits strong splitting force. It can be fully qualified for breaking various hard rocks.