How Excavators with Breakers Can Effectively Protect Hydraulic Pumps

excavators equipped with hydraulic breakers are widely used in mining, demolition, and infrastructure construction. 

However, due to the breaker's rapid, repetitive impact action, the hydraulic system is exposed to high-pressure pulses, accelerated oil aging, and increased risk of component damage—especially the hydraulic oil pump, one of the most critical and costly parts of the machine.

At Ningbo SAIVS Machinery Co., Ltd, we provide advanced hydraulic components and expert solutions to help our customers extend the life of their equipment. 

In this article, we share key maintenance practices to ensure that Excavators equipped with breakers operate safely, efficiently, and with minimal downtime.

1. Operate with Medium Throttle

One of the most common misconceptions is that high throttle equals higher performance. 

In reality, breakers require low pressure and flow, and operating at medium throttle is more than sufficient. 

Running the engine at full throttle doesn’t increase striking power—instead, it leads to overheating of the hydraulic oil, putting stress on the entire system and accelerating the wear of the Hydraulic Pump.

2. Apply Lubricating Grease Every 2 Hours

Steel brazing tools within the breaker system must be lubricated consistently. 

Grease not only protects the steel pin but also prevents high-pressure oil from forming inside the striking chamber. 

Without proper lubrication, this pressure can backflow into the hydraulic system, causing premature hydraulic pump failure.

To maintain optimal performance, add grease every two working hours, especially during continuous operations.

3. Replace Oil Seals Every 600–800 Hours

Oil seals are relatively inexpensive but play a vital role in keeping contaminants out of the hydraulic system. 

They are prone to wear and must be replaced regularly—every 600 to 800 operating hours is recommended. 

If leakage occurs and operation continues, dust and debris can enter the hydraulic circuit, leading to serious damage to the pump and other internal components.

4. Keep Breaker Pipelines Clean

Hydraulic cleanliness is non-negotiable. During breaker pipe installation, ensure the pipelines are fully flushed and cleaned. 

Before switching back to the bucket or other attachments, block the breaker’s hydraulic ports to prevent debris and moisture from contaminating the lines. 

A clean pipeline preserves the purity of hydraulic oil and safeguards the pump from abrasion and corrosion.

Conclusion: Maximize Pump Life with Proactive Care

Hydraulic pump failures are not only expensive but also result in downtime and lost productivity. 

By following the correct maintenance procedures—optimized engine speed, regular greasing, timely seal replacement, and pipeline cleanliness—you can significantly extend the service life of your excavator's hydraulic system.

At Ningbo SAIVS Machinery Co., Ltd, we specialize in supplying high-performance excavator hydraulic components, including oil pumps, seals, hoses, and breaker-compatible parts. All our products are manufactured with strict quality standards and are tested for real-world performance in demanding environments.

For inquiries or bulk purchases of hydraulic components, contact us today. 

Our expert team is here to ensure you get the most durable and cost-effective solutions for your fleet.