23B-15-12110

Core Features

Power Transmission: As a key transmission component of the working device, it connects the hydraulic cylinders, connecting rods, and actuators such as the blade/ripper, converting hydraulic power into mechanical action. This enables the blade to lift, tilt, and laterally move, and the ripper to break soil, ensuring the efficient execution of the grader's core functions such as leveling, shaping, and roadbed construction.

Positioning and Guiding: It provides precise positioning and guidance for related moving parts, ensuring that the blade, ripper, etc., move along a preset trajectory. This guarantees the flatness and slope accuracy of the working surface and avoids construction errors caused by component misalignment.

Load Bearing: During grader operation, it withstands impact loads and torsional forces from soil, rocks, etc., maintaining the structural stability of the working device, preventing component deformation or damage, and ensuring the machine's continuous operation capability.

Product superiority

Superior Material, Robust and Durable: Made from high-strength alloy steels such as 40Cr and 42CrMo, and heat-treated through tempering and quenching, the shaft boasts a tensile strength ≥900MPa and a hardness of HRC40-45. It exhibits excellent resistance to bending, torsion, and fatigue, making it resistant to deformation and breakage, and ensuring a long service life.

Precision Machining, High Adaptability: Machined using high-precision CNC lathes and grinders, the journal roundness and cylindricity tolerances are ≤0.005mm, and the surface roughness Ra≤0.8μm. It perfectly matches original mounting holes, bearings, and other components, facilitating easy installation without additional adjustments and allowing direct replacement of original parts.

Wear-Resistant and Corrosion-Resistant, Suitable for Complex Working Conditions: The surface is treated with nitriding, blackening, or galvanizing to enhance wear and corrosion resistance. It can withstand harsh environments such as dusty, humid, and temperature-varying construction sites, reducing wear and rust, and lowering maintenance frequency and costs.

Original factory standard, reliable performance: Strictly manufactured in accordance with Komatsu's original technical specifications, with dimensions and mechanical properties consistent with the original shaft, avoiding problems such as working device jamming and reduced operating accuracy caused by incompatible parts, ensuring the efficiency and construction quality of the grader.

Compatibility Scenarios and Usage Recommendations

Suitable for: Repairing, overhauling or regularly maintaining and replacing the working device of Komatsu GD621/GD623/GD625/GD611/GD605 graders, especially suitable for high-intensity working conditions such as highways, railways, and mines, ensuring equipment uptime.

Usage tips

Before installation, inspect the shaft for cracks, dents, rust, or other defects. Clean the installation area and mating parts to ensure they are free of impurities.

During installation, tighten the bolts to the torque specified by the original manufacturer. Use new bearings, seals, and other components to improve transmission and sealing performance.

Regularly check the shaft for wear. Based on operating hours, it is recommended to perform a comprehensive overhaul of the shaft and working device every 800-1200 hours, and replace severely worn parts promptly.