Hydraulic breaker failure caused by incorrect use

　　If operation errors, hydraulic breaker nitrogen leakage, improper maintenance and other phenomena, will cause hydraulic breaker working valve wear, pipeline burst, hydraulic oil local overheating and other faults. The reasons are, first, unreasonable technical configuration, and second, improper on-site management.

　　The working pressure of the hydraulic breaker is generally 20MPa, and the flow rate is about 170L/min, while the system pressure of the excavator is generally 30MPa, and the flow rate of the single main pump is 250L/min, so the overflow valve needs to undertake heavy diversion and unloading work.

　　Once the overflow valve is damaged but it is not easy to be detected, the breaker will work under ultra-high pressure. First, the pipeline will burst and the hydraulic oil will be overheated locally. The hydraulic circuit controlled by the spool (the next spool to which the main oil line points when in the neutral position) is contaminated;

excavator hydraulic breaker

　　Because the oil returned by the breaker generally does not pass through the cooler but directly returns to the oil tank through the oil filter, such a circulating oil circuit may cause the oil temperature in the working oil circuit to be too high or even too high, which seriously affects the hydraulic components (especially the seals). service life.

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