Guardian of the hydraulic system: Caterpillar 334-5261 Filter assembly
In hydraulic systems, up to 75% of faults result from oil contamination. The Caterpillar 334-5261 hydraulic filter assembly, with its outstanding filtration performance and reliability, provides comprehensive protection for your equipment, ensuring the cleanliness of the hydraulic system, reducing downtime due to faults, and enhancing equipment availability.
Core technological advantages
Precision filtration technology
It adopts a combination of glass fiber composite filter material and stainless steel support layer, with a filtration accuracy of 10 microns and a pollutant capture efficiency of 99.5%.
The specially designed pleated structure increases the filtration area by 40%, extending the service life while reducing the pressure resistance.
Structural reliability design
The metal end cover and the sealing ring are integrally formed, with a pressure resistance strength of ≥4MPa, eliminating the risk of bypass leakage.
The anti-vibration reinforced structure is suitable for the high-intensity operation conditions of equipment such as excavators and loaders.
Intelligent bypass protection
It is equipped with a built-in differential pressure trigger bypass valve (opening pressure 2.5±0.2bar), which automatically switches the oil circuit when the filter element is clogged to prevent system flow interruption.
Why is it necessary to replace the hydraulic filter regularly?
Pollutants can cause:
Pump and valve wear: Particulate matter accelerates the wear of precision pairs, increasing maintenance costs by more than 50%.
Performance decline: Changes in oil viscosity lead to sluggish movement and insufficient power.
Seal failure: Metal debris damages the oil seal, causing leakage.
The 334-5261 filter can effectively intercept iron filings, dust, gum and other contaminants, maintaining the cleanliness of the oil in accordance with ISO 18/16 standards.
Applicable equipment and working conditions
Construction machinery: Caterpillar 320D, 326D, 330D and other excavator series;
Mining equipment: Hydraulic systems of loaders and bulldozers;
Industrial hydraulics: Injection molding machines, die-casting machines, hydraulic station filtration systems;
Marine machinery: Deck machinery, steering gear hydraulic units.
Performance verification data
Initial pressure difference: ≤0.3bar (@46℃, 46 CST oil);
Dirt-holding capacity: ≥12g (ISO 12103-A3 test standard);
Burst pressure: ≥8MPa;
Service life: 500 hours or differential pressure indicator alarm (first come, first served).
Genuine product procurement channels and services
To ensure the filtration effect and system safety, it is recommended to purchase through regular channels. Suppliers such as Ningbo Qiuning Trading Co., Ltd. provide:
Each filter comes with an independent test report (including bubble point test and differential pressure verification);
Original factory specification packaging and anti-counterfeiting label certification;
Detection of contamination degree in hydraulic systems and guidance on filter element selection
24-hour delivery support for urgent needs.
Installation and maintenance suggestions
Clean the filter seat interface before replacement to prevent contaminants from entering the system.
Pre-fill the internal cavity of the filter element to prevent dry friction during startup.
After installation, run the equipment and circulate the oil, and check the sealing performance.
Regularly monitor the filtration effect in combination with the oil contamination degree detector (optional).
Customer case feedback
Feedback from a user of a certain mining equipment
After using the 334-5261 filter, the maintenance interval of the hydraulic pump has been extended from 2,000 hours to 4,500 hours, saving over 120,000 yuan in maintenance costs annually.
Order now!
Obtain Caterpillar 334-5261 hydraulic filters through reliable channels such as Ningbo Qiuning Trading Co., Ltd. to build a professional-level hydraulic protection system for your equipment!
We are a supplier of various engine assemblies and engine parts in China, with a wide range of brands and types. We have a huge warehouse for storage and a professional after-sales maintenance team. Both original and auxiliary factories are available, with global supply.
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