A hydraulic breaker is one of the most commonly used attachments for excavators, frequently required for demolition, mining, and urban construction projects. How should hydraulic breakers be properly maintained and serviced? How should they be correctly used? These questions are of critical importance.

Maintenance

Given the harsh operating conditions hydraulic breakers face, proper maintenance can reduce machine failures and extend their service life. In addition to maintaining the main machine correctly, the following points should also be noted:

1. Visual Inspection

Check if any bolts are loose; inspect if the connecting pins are excessively worn; verify if the gap between the chisel and its sleeve is normal; and check if there are any oil leaks from the hydraulic breaker or its piping.

2. Lubrication

Lubricate the lubrication points of the working components before each operation and after every two consecutive days of continuous operation.

3. Hydraulic Oil Replacement and Inspection 

The hydraulic oil for engineering machinery using a hydraulic breaker should be replaced after 600 hours of operation. Additionally, ensure the hydraulic oil temperature remains below 800°C. 

The choice of hydraulic oil directly impacts the efficiency of the hydraulic breaker. In summer, anti-wear 68# hydraulic oil is recommended; in winter, anti-wear 46# hydraulic oil is recommended.

Select hydraulic oil appropriately based on the specific working environment of the equipment. Using contaminated hydraulic oil may cause malfunctions in the breaker and the main body of the construction machinery, as well as damage to components. Therefore, please pay special attention to the quality of the hydraulic oil.

Usage

Proper operation can improve the efficiency of the breaker and extend its service life. The following are important operational precautions:

1. Before each use, inspect the high-pressure and low-pressure oil lines for leaks or loose connections. Additionally, regularly check other areas for leaks to prevent oil lines from detaching due to vibration, which could cause malfunctions.

2. During operation, the chisel should always remain perpendicular to the rock surface and be firmly pressed against it. After breaking, immediately cease operation to prevent empty strikes. Continuous aimless impact may damage the front section of the breaker and cause severe loosening of the main bolts, which could potentially damage the main unit itself. 

3. Do not shake the chisel rod during breaking operations, as this may cause the bolts and chisel rod to break. 

4. It is strictly prohibited to operate the breaker in water or muddy conditions. Except for the chisel rod, the front guard of the breaker must not be submerged in water or mud.

5. When breaking larger hard objects (rocks), start from the edge. Regardless of the size or hardness of the rock, starting from the edge is usually the most feasible approach. If continuous striking at the same point for over a minute fails to break the object, change the striking point and try again.