Hydraulic breakers are essential tools in construction and demolition operations, providing the power needed to break concrete, rock, and other hard materials. However, to achieve optimal results, properly setting the pressure of a hydraulic breaker is crucial. In this blog post, we’ll explore how to effectively set the pressure of a hydraulic breaker to maximize its performance and extend its service life.
Understanding Hydraulic Breakers
Before delving into the specific details of pressure settings, it’s essential to understand what hydraulic breakers are and how they work. These tools utilize hydraulic power to transfer high impact energy to chisels or hammers, enabling efficient breaking and demolition operations. The performance of a hydraulic breaker depends heavily on the pressure of the hydraulic fluid that powers it.
Why pressure is Important?
Setting the correct pressure is crucial for the following reasons:
1. Efficiency: Appropriate pressure ensures that the circuit breaker operates in optimal condition, maximizing efficiency and minimizing the time required to complete the task.
2. Tool Life: Incorrect pressure settings can cause excessive wear on the breaker, potentially shortening its lifespan and increasing maintenance costs.
3. Safety: Operating a hydraulic breaker with incorrect pressure may pose safety risks, including equipment malfunction or operator injury.
Adjustment steps of Hydraulic Breaker Working Pressure
1. Preparation
Ensure the excavator and hydraulic breaker are correctly connected, the hydraulic system is leak-free, and the oil level and temperature are normal.
Prepare appropriate tools, such as a pressure gauge and wrench.
2. Locate the Relief Valve
The relief valve is usually installed on the excavator’s boom near the cab, or on the hydraulic breaker’s inlet line. Some excavators may have a relief valve on the spare valve of the main control valve.
3. Connect the Pressure Gauge
Connect the pressure gauge to the hydraulic breaker’s inlet or the hydraulic system’s pressure monitoring point to monitor pressure changes in real time.
4. Adjust the Relief Valve
Clockwise rotation gradually increases the pressure; counterclockwise rotation decreases the pressure.Adjust slowly, observing the pressure gauge reading until the desired set pressure is reached.
5. Set the Pressure Value
Based on the hydraulic breaker model and operating requirements, refer to the equipment manual to determine the appropriate pressure range. Standard Range: The nitrogen pressure for a hydraulic breaker is typically set at 16.5 ± 0.5 MPa.This range ensures stable operation and maximum work efficiency during construction.
6. Testing and Verification
After adjustment, start the excavator and operate the breaker to perform no-load or light-load tests, observing whether the pressure is stable and whether the breaker is working properly.
If the pressure is abnormal or the breaker is not working smoothly, it needs to be checked and adjusted again.ct.
About Us
We are a professional manufacturer of excavator attachments (including hydraulic breakers, excavator grapple,quick hitch,excavator ripper,earth augers, excavator pulverizer and more). For further assistance or product inquiries, feel free to contact HMB excavator attachment.
Post time: Jan-13-2026
