Liugong SP112260 Air Filter: The "Breathing Guardian" for Construction Machinery Engines

1. Dual-stage composite filter material achieves micron-level dust interception.

Construction machinery often operates in dusty environments such as mines and infrastructure construction sites, where the air contains particles with diameters ≥1μm The dust particles are the engine's “ The Invisible Killer ” Liugong SP112260 The air filter element uses “ Pre-filter pre-stage +  High-precision main filter layer ”  A two-stage composite filter structure builds a comprehensive dust-proof system: the pre-filter layer at the front is made of a high-density polyester fiber mesh, which first traps particles with diameters as ≥10μm Large-particle dust (such as sand grains and crushed stone chips) reduces the load on the primary filter layer, extending its overall lifespan. The middle primary filter layer is made from imported high-efficiency filter paper, specially treated with resin impregnation, achieving a filtration accuracy of 1 μm , the filtration efficiency for fine particulate matter ≥99.9% , it can precisely capture fine airborne dust particles, pollen, and other impurities, preventing them from entering the engine combustion chamber with the intake air—thus avoiding scratches on the cylinder walls or clogging of the fuel injectors. Testing has shown that after using this filter element, the dust content in the engine's intake air is significantly reduced. 95% Above, the cylinder wear rate has decreased. 60% , effectively extends the engine overhaul interval 2-3 Year.

II. High dust-holding and anti-clogging design, extending maintenance intervals

In dusty environments, insufficient dust-holding capacity of the filter element can easily lead to frequent clogging, resulting in inadequate air intake to the engine and reduced power output. LiuGong SP112260 Air filter elements are specifically optimized for dust-holding capacity: the primary filter layer uses high-quality filter paper. “ Foldable three-dimensional structure ” , with a total area reaching 2.5 ㎡, which is the standard flat-type filter element 2.2  Twice, with dust-holding capacity as high as 40g , capable of accommodating more dust without compromising intake efficiency; meanwhile, the filter paper surface is treated with an oil- and water-repellent coating, which not only prevents rainwater and oil stains from adhering and clogging the filter pores but also reduces dust adhesion, ensuring that intake resistance remains consistently under control. 3 kPa The following (industry standards) ≤5kPa ), ensuring the engine continues to receive sufficient air intake even under full-load operation, thus preventing power loss. Depending on the specific operating environment, this filter element can maintain its normal service life up to 1000–1500 Hours, extended compared to the industry's standard air filters 40% The above —— Operating an excavator at an average daily rate 10  Hourly calculation can reduce 3-4 Next time /  The frequent replacement of the year saves users time and reduces maintenance costs.

3. High-strength structure and sealing, designed to withstand extreme environmental conditions.

Construction machinery operates in complex environments, where air filters must withstand multiple challenges such as vibration, high temperatures, and rainwater erosion. LiuGong SP112260 The air filter element undergoes rigorous layered checks in its structural design: the filter housing is made from reinforced polypropylene, molded in one piece via injection molding, achieving an impact resistance strength that reaches 18 kJ/m² , it can withstand collision impacts caused by equipment jolts, preventing the outer shell from cracking and allowing unfiltered air to directly enter the engine; the bonding area between the filter material and the housing is sealed with high-temperature hot-melt adhesive, achieving a sealing width of 5mm , and can - 40℃ To 120℃ Maintaining sealing performance under extreme temperature conditions, preventing “ Bypass Intake ” Additionally, the upper and lower end caps of the filter element feature a rubber sealing ring design, ensuring precise alignment with minimal tolerance against the air filter housing. ≤0.03mm Even in heavy rain and muddy conditions, it can effectively prevent rainwater and mud from seeping in, ensuring that air intake cleanliness remains uncompromised.

4. Dual waterproof and dustproof protection, suitable for complex operational environments

Addressing the common issues of rain and moisture in outdoor operations, LiuGong SP112260 Air filter element innovatively incorporated “ Waterproof and dustproof dual protection ”  Design: The oil- and water-repellent coating on the primary filter layer's filter paper not only prevents rainwater from adhering but also creates a surface on the filter element that “ Protective film ” , preventing moisture from causing mold growth on the filter paper; meanwhile, the top of the filter element features a cyclone-style rain shield that uses airflow guidance to separate rainwater from air. The rainwater is then directed along the shield's inner wall and drained away through the bottom drainage holes, effectively preventing it from entering the main filtration layer. In dusty and rainy environments such as mines and ports, this design significantly enhances the filter element's water-resistant performance. 80% Even in the event of moderate rain, it ensures that the engine intake remains dry and clean, preventing engine stalling or component corrosion caused by rainwater ingress.

5. Compatible with all机型, supporting multi-brand engines

Leveraging LiuGong's deep understanding of the air intake systems for construction machinery engines, SP112260 The air filter element features a standardized interface and dimension design, ensuring seamless compatibility with the entire lineup of LiuGong loaders. 3-16 Ton-class), excavator ( 6-48 Engine models in the ton-class range, compatible with specialized construction machinery engines from leading brands such as Yuchai, Weichai, Cummins, and Mitsubishi. Filter cartridge installation dimensions strictly adhere to ISO International standards, flange diameter tolerance ≤0.5mm , the connection to the air filter housing allows for direct installation without modifying the intake pipe; additionally, the filter element surface clearly displays information such as compatible models, filtration accuracy, and replacement intervals, making it easy for users to quickly identify and select the right product. Whether installing on a new machine or upgrading an existing one, this solution ensures seamless compatibility, providing a unified air purification solution for various types of equipment.

6. Full-process quality control verification to ensure reliable performance

Liugong vs. SP112260 Air filter element implementation “ From raw materials to finished products ”  Lifecycle-quality control throughout: During the raw materials stage, we conduct temperature resistance tests, air permeability tests, and water resistance tests on filter media, housings, and sealing rings to ensure the base materials meet specifications. In the production process, each filter cartridge must pass an airtightness test (leakage rate < 0.1%). ≤0.05 L/min )、Intake Resistance Test (Resistance at Rated Flow Rate ≤2.5 kPa )、Burst Strength Testing (Pressure Resistance ≥8kPa ), ensuring that filtration performance and structural strength meet the standards; before products leave the factory, filter cartridges are randomly selected for 1500  Hour-long dust circulation simulation test, high-and-low temperature shock test -40℃ To 120℃ Cyclic testing and rain-simulating tests are conducted to verify reliability under extreme operating conditions. Meanwhile, LiuGong has established a comprehensive quality traceability system, enabling users to check production batches, inspection data, and after-sales records simply by scanning the filter cartridge’s unique code—ensuring all-around protection of their usage rights.

Liugong SP112260 The air filter, centered on high-efficiency filtration, superior dust-holding capacity and durability, as well as dual protection against water and dust, has become essential for construction machinery engines. “ Breathing Guardian ” Choosing it means not only selecting a high-quality filter element, but also opting for long-lasting engine protection and ensuring stable equipment operation—helping your construction machinery stay resilient against dust in challenging environments such as mining, infrastructure projects, and port loading/unloading tasks, while consistently delivering powerful performance and maximizing your project’s value.