The Importance of Operating Pressure in Hydraulic Breaker Performance

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When it comes to hydraulic breakers, operating pressure is more than just a technical specification — it’s the lifeblood of the machine’s performance.

Whether you’re breaking granite in a quarry or concrete in an urban project, maintaining the correct pressure range ensures maximum impact power, longer component life, and overall operational efficiency.

What Is Operating Pressure?

Operating pressure refers to the hydraulic force supplied by the excavator’s system to power the breaker.
This pressure drives the internal piston forward, delivering repeated, high-energy blows through the chisel tip to fracture rock or concrete.

Each breaker model is designed to operate within a specific pressure range (for example, 90–130 bar).
Exceeding or falling below that range can lead to serious performance losses or even mechanical damage.

Why Correct Operating Pressure Matters

  1. Consistent Impact Energy

    • Proper pressure ensures that every piston stroke delivers the designed impact energy.

    • Low pressure = weak blows → inefficient breaking.

    • Excessive pressure = excessive force → seal wear and oil leakage.

  2. Preventing Overload and Component Damage

    • Overpressure can cause premature failure of seals, bushings, or accumulators.

    • Underpressure leads to slow impact cycles and overheating.

    • A balanced system minimizes vibration and stress on both breaker and excavator.

  3. Fuel and Energy Efficiency

    • The excavator’s hydraulic pump works most efficiently within the breaker’s rated pressure range.

    • Maintaining proper settings reduces energy loss and fuel consumption.

  4. Operator Comfort and Safety

    • A stable hydraulic flow reduces vibration and recoil, improving control and reducing fatigue.

Signs of Incorrect Operating Pressure

  • Decreased impact force or slow response.

  • Unusual vibration or hammering sound.

  • Overheating hydraulic oil.

  • Visible oil leaks or seal damage.

If these symptoms appear, operators should immediately check the pressure gauge and compare it with the breaker’s manual specifications.

Best Practices for Maintaining Proper Pressure

  • Always verify that the excavator’s hydraulic system matches the breaker’s pressure requirements.

  • Use a certified pressure gauge to monitor real-time values.

  • Schedule regular inspections of accumulators and relief valves.

  • Ensure proper oil viscosity (typically ISO VG 46 or VG 68, depending on climate).

Conclusion

The correct operating pressure is the key to unlocking the full potential of your hydraulic breaker.
It ensures maximum breaking power, component protection, and long-term reliability.
By maintaining proper hydraulic settings, you not only extend the life of your equipment but also improve job-site productivity and safety..

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