A Core Component in Breaker Operation

In a hydraulic breaker, nitrogen plays a crucial role in both energy storage and cushioning.

Stored in the upper chamber above the piston, nitrogen acts like a "spring." When hydraulic oil drives the piston downward to deliver a blow, the compressed nitrogen quickly rebounds, pushing the piston back up and preparing it for the next impact cycle.

If the nitrogen pressure is too low, the impact force weakens and work efficiency decreases.

On the other hand, excessive nitrogen pressure can cause seal damage and internal failure.

Therefore, maintaining proper nitrogen pressure is essential for stable and efficient breaker performance.

Recommended Nitrogen Pressure Range

Different breaker models require different nitrogen pressures.

The general guidelines are:

Small hydraulic breakers: 12–16 bar

Medium hydraulic breakers: 16–20 bar

Large hydraulic breakers: 18–22 bar

Always refer to the manufacturer's manual for precise values to ensure optimal impact force and internal protection.

How to Properly Charge Nitrogen

Charging nitrogen requires a dedicated nitrogen charging kit and pressure gauge. Follow these steps:

Turn off the machine and allow the breaker to cool to room temperature.

Position the breaker vertically with the gas chamber facing upwards.

Connect the nitrogen cylinder to the chamber using the hose and valve.

Slowly charge nitrogen to the recommended pressure.

After holding pressure steady for 10 seconds, close the valve and remove the tools.

Use soapy water to check for leaks at the valve.

Important: Never use compressed air instead of nitrogen. Air contains moisture and oxygen, which can cause internal corrosion.

Recommended Frequency for Nitrogen Refills

Under normal conditions: Check every 100–200 working hours.

For intensive operations or hot environments: Check every 50–100 hours.

Even with infrequent use: Check at least once per quarter.

If you notice weak striking force, irregular impact cycles, or unusual noise, check the nitrogen pressure immediately.

Conclusion: Master Nitrogen, Maximize Performance

Nitrogen is not just a supporting component—it’s a key factor that directly affects the core performance of your hydraulic breaker.

Proper nitrogen pressure, regular inspections, and timely refills will extend the breaker’s service life and improve jobsite efficiency.

As a critical part of routine maintenance, nitrogen charging is a skill every operator should master.