Views: 0 Author: Kun Tang Publish Time: 2026-02-26 Origin: Jinan YZH Machinery Equipment Co., Ltd.
In the world of mining and construction, a Hydraulic Rock Breaker is the definition of "heavy-duty." It endures extreme vibration, heat, and impact forces every second it operates.
However, the strength of the steel is only as good as the purity of the oil flowing through it. Neglecting maintenance is the fastest way to turn a high-performance asset into a piece of scrap metal.
This guide outlines the critical maintenance protocols required to keep your Rock Breaker Booms System running at peak efficiency, focusing on the lifeblood of the machine: the hydraulic system.
Routine inspections prevent minor issues from becoming catastrophic failures.
The Rule: Check the sight gauge daily before starting the machine.
The Risk: Low oil levels introduce air into the system (cavitation). Air bubbles implode under pressure, pitting the metal surfaces of the pump and valves, leading to permanent damage.
The Importance: Hydraulic breakers are incredibly sensitive to contamination. Dust, metal shavings, or seal fragments can jam the spool valve.
The Action:
Check the return line filter indicator. If it shows red (bypass mode), replace it immediately.
Ensure the breather cap on the hydraulic tank is clean. A clogged breather creates a vacuum, starving the pump.
The Check: Look for "weeping" at the crimps or abrasions on the outer cover.
The Fix: Never ignore a damaged hose. A burst high-pressure line is a severe safety hazard and will drain your hydraulic tank in seconds.
Hydraulic oil is not just a lubricant; it is a power transmission medium. Over time, it degrades.
Fixed Interval: Generally, hydraulic oil should be changed every 1,000 to 2,000 operating hours, depending on the severity of use.
Condition-Based:
Oxidation: If the oil turns dark brown or smells burnt, it has oxidized due to overheating. It loses its ability to lubricate.
Water Contamination: If the oil looks "milky" or cloudy, water has entered the system. Water destroys the oil film strength and causes rust inside the breaker.
Drain Fully: Don't just drain the tank. Drain the cylinders and the cooler to remove as much old oil as possible.
Flush the System: If the old oil was heavily contaminated (e.g., after a pump failure), use a flushing oil to clean the lines before filling with new fluid.
Bleed the Air: After refilling, cycle the Rock Breaker Booms System slowly without load to bleed trapped air from the cylinders.
Even with good maintenance, issues arise. Here is a quick diagnostic guide.
Symptom | Probable Cause | Solution |
Low Impact Power | Low Nitrogen Pressure | Check the backhead gas pressure and recharge if necessary. |
Overheating Oil | Clogged Cooler / Low Oil | Clean the radiator fins; check oil level; check for relief valve stuck open. |
Breaker Won't Start | Spool Valve Stuck | Disassemble and clean the control valve; check for contamination. |
Excessive Vibration | Worn Bushings | Measure tool bushing wear. If beyond limits, replace to prevent piston damage. |
Maintenance is not an expense; it is an investment in uptime.
A well-maintained hydraulic system ensures that your Rock Breaker Booms System delivers consistent breaking force year after year. By strictly following a regimen of oil analysis, filter changes, and daily inspections, you protect the heart of your operation.
Need a system designed for easy maintenance?Explore our range of rock breaker booms, engineered with accessible service points and durable components.
Q1: How often should I grease my rock breaker?
A: If operating manually, grease the tool bushing every 2 hours. Ideally, use an Automatic Lubrication System (Auto-Lube) which injects a small amount of grease continuously while the breaker is firing.
Q2: Can I mix different brands of hydraulic oil?
A: No. Different brands use different additive packages (anti-wear, anti-foam). Mixing them can cause chemical reactions that form sludge or reduce the oil's effectiveness. Always stick to the manufacturer's specified ISO grade (e.g., ISO 46 or 68).
Q3: What causes hydraulic oil to overheat?
A: Common causes include: low oil level, a dirty oil cooler (radiator), operating the breaker continuously without pauses (15-second rule), or a relief valve set too low, causing the oil to bypass and generate heat.
Q4: Why is nitrogen gas used in rock breakers?
A: Nitrogen is used in the accumulator to absorb pressure spikes and provide additional impact energy on the downward stroke. It acts like a "spring." Low nitrogen results in weak impact power.
