Product superiority
1. Superior Materials and Manufacturing Process
Special Alloy Steel: Utilizing Komatsu's proprietary 35CrMoA low-alloy high-strength steel, with a tensile strength ≥1250MPa, increasing fatigue life by 50%, and capable of withstanding torque loads exceeding 30 tons.
Precision Machining: Journal surface roughness reaches Ra≤0.4μm, cylindricity error <0.005mm, ensuring transmission accuracy and stability.
Induction Hardening: Key components achieve a hardness of HRC58-62, increasing wear resistance by 3 times, effectively resisting impact and alternating loads.
Dynamic Balancing: Full shaft dynamic balancing accuracy reaches G2.5 grade, improving operational smoothness and reducing noise by 15%.
2. Reliability and Durability Design
Multiple sealing protection: Utilizing a double-lip seal and labyrinth dustproof structure, it achieves an IP67 waterproof and dustproof rating, extending bearing life by 30%.
Reinforced support structure: The shoulder and bearing mating area feature an R8 rounded transition, reducing stress concentration by 40% and preventing fatigue fracture.
Precision tolerance control: The mating clearance is controlled within 0.01-0.03mm, ensuring stability during high-speed operation.
Corrosion protection: The surface undergoes a phosphate + galvanizing composite treatment, withstanding ≥1000 hours of salt spray testing, adapting to harsh working conditions.
3. Factory compatibility and maintenance convenience
Precise Matching: Designed specifically for the Komatsu GD series motor grader drivetrain system, perfectly compatible with the gearbox and hydraulic pump interface.
Standardized Connection: Utilizes universal spline/flange interfaces for easy maintenance and replacement, reducing downtime.
Modular Design: Allows for individual disassembly and maintenance without disassembling the entire drivetrain, reducing maintenance costs by 40%.
Extra-Long Service Life: Up to 20,000 working hours under normal operating conditions, 2-3 times that of ordinary aftermarket parts.
Installation and Maintenance Recommendations
1.Installation Points
Thoroughly clean the shaft surface and mating holes before installation to ensure they are free of impurities.
Use specialized tools to install the bearings; do not hammer the shaft end to prevent deformation.
Apply specialized high-temperature grease (lithium-based + molybdenum disulfide) to the spline connections to reduce friction.
Tighten the flange bolts evenly in stages to the specified torque (65-70 N·m).
After installation, check for axial runout (≤0.05 mm) and radial runout (≤0.03 mm).
2.Maintenance
Routine Inspection: Before each operation, check the shaft surface for damage and ensure connections are secure.
Regular Lubrication: Check lubrication status every 250 hours, adding high-temperature grease as needed.
Quarterly Inspection: Measure shaft wear (should not exceed 0.05mm) and check dynamic balance.
Long-Term Storage: Apply rust-preventive oil and protect both ends from dust to prevent corrosion and impact.
