Bushing-6631-21-4371

Core Functions

1. Wear Resistance & Friction Reduction: Isolates direct metal-to-metal contact between mating engine components, effectively reducing friction and wear during high-speed and heavy-load operation, and extending the service life of associated engine parts.

2. Vibration Damping & Stability: Absorbs and buffers mechanical vibration and impact generated by engine operation, weakens resonance between components, and ensures stable and smooth running of the engine under complex working conditions.

3. Precise Positioning & Centering: Accurately positions the shaft and hole matching components of the engine, maintains the coaxiality and alignment of mechanical transmission parts, and prevents operational errors caused by component offset.

4. Load Distribution & Stress Relief: Evenly distributes dynamic and static loads generated during engine operation to connected structural parts, avoids local stress concentration, and protects the structural integrity of key engine components.

5. Auxiliary Sealing & Protection: Forms a protective barrier between mating parts in specific engine positions, prevents lubricating oil leakage and the intrusion of dust, impurities and other foreign matters, and maintains the normal operation of the engine's internal lubrication system.

Product Advantages

1. OEM-Grade Perfect Compatibility: 1:1 replication of Komatsu original bushing’s dimensional parameters and structural design, no secondary processing required for installation, perfectly fitting the assembly grooves of S6D125/SA6D125E engines and eliminating fit clearance errors.

2. High-Performance Wear-Resistant Material: Adopts Komatsu engine working condition-customized high-strength alloy wear-resistant material, with excellent hardness, corrosion resistance and high temperature resistance, able to withstand the harsh working environment of construction machinery engines for long-term continuous operation.

3. Ultra-Precision CNC Machining: Processed by high-precision CNC machining equipment, the inner and outer surface finish meets Komatsu original standards, with dimensional tolerance controlled within ±0.005mm, ensuring smooth assembly and stable operational performance.

4. Long Service Life & Low Maintenance Cost: Under standard installation and regular maintenance, its service life is equivalent to that of original parts, reducing the frequency of engine disassembly, replacement and maintenance, and lowering the overall operation and maintenance cost of the whole machine.

5. Reliable Performance in Harsh Conditions: Adapt to various complex working conditions of construction machinery such as high temperature, heavy dust, high altitude and continuous heavy load, without deformation, aging or performance attenuation, ensuring the reliable operation of Komatsu engines in all construction scenarios.

Application Scope

Special for Komatsu medium and heavy-duty construction machinery equipped with S6D125/SA6D125E engines, including excavators, bulldozers, wheel loaders, mining machinery and other engineering equipment.