Why is it crucial to store the quebrador hidráulico correctly
O quebrador hidráulico is a precision hydraulic impact attachment, with the piston and cylinder bore operate with very tight clearances. When the equipment is idle for a long time, the lower end of the piston may remain exposed to air in the front head/tool chamber and come into direct contact with the moisture in the air. If improperly stored, in humid, salty, or poorly ventilated environments, corrosion may start within weeks, the surface of the piston may develop rust, forming tiny pits. Once rust occurs, the corrosion pits or scoring can damage the sealing surface, accelerate seal wear, and lead to internal leakage or oil leakage, resulting in reduced impact force and increased oil temperature. Eventually, the piston or even the cylinder assembly will need to be replaced. For overseas contractors, the procurement cycle for maintenance parts is long and the labor cost is high. A single rust incident can cause losses of several thousand dollars and several weeks of downtime. Therefore, mastering scientific long-term storage methods is the key to protecting investment and reducing operating costs.
Core operations before storage: Nitrogen release and piston protection
Why is it necessary to release nitrogen first
The nitrogen gas inside the back head of the hydraulic breaker always exerts a forward thrust on the piston. If the nitrogen gas is not released, even if the piston is forcibly pushed into the middle cylinder, the pressure of the nitrogen gas will push it out again. The correct sequence is:
- Use specialized tools to completely release the nitrogen pressure inside the cylinder to zero.
- Use a chiselor a dedicated push rod to push the piston to the deepest part of the cylinder.
At this point, the exposed piston surface is moved back into the oil-wetted cylinder bore, reducing direct contact with air and moisture remaining in the cylinder, forming an oil film protective layer that effectively isolates the air.
Additional Anti-Corrosion Measures for Long-Term Storage
For equipment that has been stored for more than three months, it is recommended to install the piston and then use an oil sprayer to apply anti-rust oil on the piston surface. This will further enhance the anti-rust effect, especially for users in high-humidity areas.
Storage Environment and Daily Maintenance Requirements
Selection of Storage Location
The hydraulic breaker should be stored in a cool, dry and well-ventilated indoor area. Do not store the breaker outdoors without protection, and never expose it to rain, standing water, or ground moisture. The intrusion of rainwater or groundwater will rapidly damage the internal precision sliding surfaces. Even if it dries later, the rusted points that have formed cannot be eliminated.
Regular Inspection
Even when in storage, it is recommended to conduct a simple inspection once a month:
- Check whether the piston remains fully retracted and has not moved downward/outward.
- Check if there is any water leakage or condensation on the storage site.
- If the tool remains installed, remove it periodically, clean the shank, reapply grease, and reinstall it to prevent corrosion in the tool bushing area.
The Hazards of Rust and the Economic Benefits of Preventive Maintenance
Irreversible damage caused by rusting
Once rust pits appear on the surface of the piston, its smoothness is compromised. The seal lips cannot maintain proper contact and oil film control on a rough or pitted surface, which may cause leakage and premature seal failure. And as the piston is a core precision component, its procurement cost and replacement labor time are very expensive.
The Economic Value of Preventive Storage
The following comparison clearly illustrates the economic significance of preventive storage:
| Storage Method | Operating Cost | Potential Risks | Possible Losses |
| Unprotected Storage | 0 | Probability of piston rusting exceeds 80% | Piston replacement + labor ≈ $800 – $2500, additional downtime losses to be calculated |
| Only releasing nitrogen and pushing the piston in | 15 minutes of labor | Rusting probability reduced to below 10% | Almost no risk |
| Releasing nitrogen &pushing the piston & spraying anti-rust oil | 30 minutes of labor & a small amount of anti-rust oil | Rusting probability lower than 2% | Extremely high investment return |
It can be clearly seen that: by spending only a little time on pre-storage preparations, one can avoid the high maintenance costs and equipment downtime.
Conclusão
Storing a hydraulic breaker correctly is not complicated. It merely requires the operator to understand two core principles – releasing nitrogen to allow the piston to fully retract into the cylinder, and using hydraulic oil and anti-rust oil to isolate the air. For foreign contractors and mine operators, equipment assets are of high value and spare parts take a long time to obtain.
A single rusting incident can have a ripple effect that may affect the progress of the entire project. Therefore, we strongly recommend incorporating the storage steps described in this article into your equipment management procedures. This way, you can protect every penny of your investment at the component level.
FAQ
Q: If nitrogen gas is not released, can the piston be pushed into the middle cylinder?
A: No. Because nitrogen gas always exerts a forward thrust on the piston, even if it is forcibly pushed in, it will be pushed out again.
Q: If there is no anti-rust oil, can regular engine oil be used instead for spraying?
A: It can be used as a temporary substitute, but the anti-rust properties and penetration of regular engine oil are not as good as those of the dedicated anti-rust oil. It is recommended to use the dedicated anti-rust oil even after storage for more than three months.
Q: If there are slight rust spots on the piston surface before storage, how should it be handled?
A: If the rust spots are very minor, you can use fine sandpaper combined with engine oil to gently polish them, then clean them thoroughly and apply anti-rust oil; if they have formed visible dents, it is not recommended to continue using the piston; it should be replaced immediately.
