1. Basic Product Information
: Hydraulic Oil Filter / Fuel Filter (21N-60-12211): Komatsu construction machinery (e.g., loaders, excavators, etc.)
2. Product Category Introduction
Core Function: To intercept metal debris, dust, gum, water and other impurities in the oil, preventing them from entering precision hydraulic valves, pumps, cylinders or engine fuel systems, thus avoiding component wear, jamming or failure, and extending equipment service life.
(to purify fuel and protect engines). This model 21N-60-12211 is a dedicated for Komatsu machinery.
Efficiently filters solid particles and contaminants in hydraulic oil, controlling oil cleanliness within ISO standards.
Protects precision hydraulic components such as hydraulic pumps, control valves, and cylinders from wear and jamming.
Extends hydraulic oil service life and reduces equipment downtime for maintenance.
Maintenance of construction machinery hydraulic systems in harsh working conditions such as mines, construction sites, and ports.
Replacement of old filters during regular equipment maintenance (e.g., 500/1000 hours).
Emergency replacement after hydraulic system pollution exceeds the standard or oil deterioration.
Application Steps (Installation + Replacement)
: Park the construction machinery on a flat surface, shut down the engine, and release residual pressure in the hydraulic system (operate the control levers several times).
: Find the return oil filter installation position on the hydraulic oil tank (usually on the top or side of the tank).
: Use a special wrench or socket to unscrew the old filter counterclockwise, and clean the residual oil and impurities on the mounting surface.
Pre-lubricate the New Filter: Apply a small amount of clean hydraulic oil to the rubber seal of the new filter to ensure a good sealing effect.
: Align the new filter with the mounting base, manually tighten it clockwise until the seal contacts, then use a tool to tighten it an additional 1/4~1/2 turn (avoid over-tightening to prevent seal failure).
: Start the equipment and run it at idle speed, check for leaks at the filter installation, and verify that the hydraulic system pressure is normal.
: Record the replacement time and equipment operating hours to provide a basis for the next maintenance.
Only use original or high-quality replacement filters matching the model to avoid equipment failure due to insufficient filtration accuracy.
Prevent impurities from falling into the hydraulic oil tank during replacement; it is recommended to check the hydraulic oil level and quality simultaneously.
Never disassemble the filter while the system is under pressure to prevent high-pressure oil injection from causing injury.
: WA series (e.g., WA380, WA470), for hydraulic system return oil filtration.
: PC series (e.g., PC200, PC300), ensuring stable operation of the hydraulic system during actions such as digging, slewing, and lifting.
: Bulldozers, graders, etc., can be used as long as the hydraulic system matches this part number.
Core Value: Maintaining hydraulic system cleanliness in high-intensity operations such as mines, infrastructure construction, and ports, reducing equipment failure rates and improving operational efficiency.
to realize real-time early warning and intelligent replacement, avoiding over-maintenance or missed maintenance.
:
Recyclable/biodegradable filter materials will gradually replace traditional metal + paper structures.
A sound waste filter recycling and treatment system will be established to reduce solid waste pollution.
High-performance Material Upgrades:
The application of glass fiber and composite filter materials improves filtration accuracy and dirt-holding capacity.
Water-resistant and high-temperature resistant materials adapt to harsher working conditions.
:
The construction machinery aftermarket is transforming to "one-stop maintenance", and filters will become the core component of standardized maintenance packages.
Cross-border e-commerce and digital supply chains make high-quality replacement parts more accessible to global customers.
: With the rise of electric construction machinery, hydraulic systems are transitioning to electric drive systems, and filter application scenarios will gradually extend to battery cooling and electric drive system filtration.
| This Product (21N-60-12211) | |||
|---|---|---|---|
| Dedicated for Komatsu models, 100% matching in size, interface and filtration accuracy | |||
| Meets original factory standards, can filter particles >=10μm, large dirt-holding capacity | Variable accuracy, some can only filter particles >=25μm | ||
| Resistant to high pressure and pulse, service life >=1000 hours | Prone to deformation and breakage, service life about 500~800 hours | ||
| Metal housing + high-precision glass fiber filter material + oil-resistant rubber seal | Thin iron housing + paper filter material + ordinary rubber |
