Delford Machinery Company
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International Name: Heavy-Duty Engine Air Filter Cartridge
Description:
Designed to protect excavator engines from abrasive dust and particulate contamination. This high-efficiency pleated media filter meets ISO 5011 standards, ensuring optimal airflow while capturing 99.5% of particles above 5 microns. Critical for Tier 4 Final/Stage V engines to prevent premature wear and maintain fuel combustion efficiency.
Key Features:
Water-resistant nanofiber layer with anti-clogging design.
Radial seal technology for zero bypass in high-vibration environments.
Service interval indicator compatible with telematics systems.
International Name: High-Pressure Hydraulic Return Line Filter
Description:
Beta-rated (βₓ(c)≥200) filtration system for excavator hydraulic circuits, engineered to ISO 16889 specifications. Removes metallic wear particles and silicone-based contaminants down to 3 microns absolute, protecting pumps/valves from micro-damage. Essential for maintaining hydraulic oil cleanliness to NAS 1638 Class 6 standards.
Key Features:
Glass fiber composite media with epoxy-free construction.
500+ PSI burst pressure rating with anti-drainback valve.
Magnetic pre-filter for ferrous particle capture.
International Name: Electro-Hydraulic Pilot Control Microfilter
Description:
Precision protection for excavator pilot control systems using sintered bronze mesh technology (10μm nominal rating). Safeguards sensitive proportional valves and joystick controls from silting and oil degradation byproducts. Compliant with DIN 24550 for compact hydraulic applications.
Key Features:
Non-bypass design with 360° laser-welded seam.
High-dirt-holding capacity with minimal pressure drop.
Compatible with biodegradable hydraulic fluids (HEES/HEPG).
International Name: Multi-Stage Fuel Conditioning Module
Description:
Integrated fuel filtration solution meeting ULSD (Ultra-Low Sulfur Diesel) requirements, combining water separation (coalescing media) and particulate removal (3μm absolute). Features hydrophobic layers to prevent microbial growth and paraffin crystallization in cold climates. Certified to ISO 19438 for fuel injection system protection.
Global Vision
Strategically located in Guangdong—China’s manufacturing heartland—we leverage local supply chain advantages to offer competitive pricing and timely delivery. Our hybrid model of factory-direct production and professional trade services ensures you receive cost-effective, reliable solutions without intermediaries.
Our comprehensive range of excavator air filters, fuel filters, and hydraulic oil filters offers essential protection for your heavy equipment. These critical components are designed to ensure peak performance and extend the lifespan of various excavator brands, including but not limited to Caterpillar, Hitachi, Komatsu, Hyundai, and Bobcat.
Air Filters: Engine air filters are paramount for safeguarding your excavator's engine. They efficiently capture airborne contaminants such as dust, dirt, and debris, preventing them from entering the combustion chamber. This protection is vital for maintaining optimal engine combustion, preventing premature wear on internal components, and ensuring efficient fuel consumption. A clean air supply contributes directly to consistent power output and reduced exhaust emissions. Regular replacement of your air filter is key to engine longevity and maintaining operational efficiency, especially when working in dusty or challenging environments.
Fuel Filters: Fuel filters are indispensable for protecting the delicate fuel injection system of your excavator. They effectively remove impurities, rust particles, sediment, and water from the fuel before it reaches the engine. Contaminated fuel can lead to injector clogging, reduced engine power, increased fuel consumption, and severe damage to high-pressure fuel pumps. Our fuel filters guarantee a clean fuel supply, promoting smooth engine operation, reliable starting, and preventing costly repairs to the intricate fuel system components. This ensures your excavator runs reliably day in and day out.
Hydraulic Oil Filters: The hydraulic system is the powerhouse of any excavator, enabling precise and powerful movements of its arm, boom, and bucket. Hydraulic oil filters play a crucial role in maintaining the health and efficiency of this system. These filters remove particulate contaminants and sludge from the hydraulic fluid, preventing wear and tear on expensive hydraulic components like pumps, control valves, and cylinders. Clean hydraulic fluid ensures smooth and precise operation, reduces heat buildup within the system, and significantly extends the life of the hydraulic oil itself. Our filters are built to withstand high pressures and maintain superior filtration efficiency, even in demanding applications, preventing costly hydraulic system failures.
Each filter in our extensive selection is manufactured using high-grade filtration media and robust construction materials. They are engineered to meet or exceed the rigorous performance standards required for modern heavy machinery. Our commitment to quality ensures that every filter provides excellent durability and reliable protection under the toughest working conditions.
We offer solutions compatible with a wide array of popular excavator models across leading brands such as Caterpillar, Hitachi, Komatsu, Hyundai, Bobcat, as well as Volvo, John Deere, Doosan, Sany, and many more. Our filters are designed for a perfect fit, facilitating easy installation and hassle-free maintenance, making them ideal aftermarket replacement solutions.
Investing in high-quality filtration products is a smart decision for any heavy equipment owner or operator. By preventing harmful contamination, our filters help to extend the service life of your excavator's vital systems, reduce maintenance frequency, and significantly lower overall operating costs. Minimize downtime and maximize your productivity with our dependable filtration solutions. We are a trusted global supplier of essential excavator spare parts, offering a comprehensive range and dedicated customer support to help you find the right filter for your specific machine. Inquire about our extensive catalog and ensure the continued peak performance of your valuable assets.