Core Features
Power Transmission: Capable of withstanding and transmitting ≥1000 N·m of rated torque, adapting to reduction and torque increase requirements, providing stable power input for the grader's movement and scraping action.
Positioning and Support: Precisely positions the transmission gears, ensuring stable meshing center distance, reducing transmission errors and vibration, and ensuring transmission efficiency ≥98%.
Torsion and Shock Resistance: Resists instantaneous load impacts during operation, preventing shaft deformation or breakage, and protecting core components such as the gearbox and rear axle.
Speed Adaptation: Operates stably at the designed speed (maximum 3000 rpm), matching the speed coordination requirements of the machine's movement and operation.
Product superiority
Original Factory Precise Fit:Shaft diameter, keyway, and spline parameters are 100% matched with the GD series transmission system, ensuring smooth transmission without jamming or abnormal noise after installation.
High Rigidity and Torsional Deformation Resistance: Made of 42CrMo material with heat treatment, torsional rigidity is increased by 40%, and the shaft torsion angle under heavy load is ≤0.1°/m, preventing power transmission loss.
Wear and Impact Resistance:Journals are hardened and reinforced, combined with high-precision bearings, reducing wear rate by 50%; overall heat treatment eliminates internal stress, providing strong impact resistance, suitable for heavy-duty conditions such as mining and roadbed applications.
Precise Coaxiality: Precision grinding ensures coaxiality error is controlled within 0.02mm, reducing abnormal wear on bearings and gears and extending the life of transmission components.
Convenient Maintenance: Standard interfaces and installation dimensions shorten replacement cycles by 40%, reducing downtime maintenance costs.
Applicable Scenarios and Installation Tips
Applicable Working Conditions: GD series graders are suitable for regular and heavy-duty operations such as highway subgrade leveling, municipal maintenance, and mine site grading, especially for continuous operation scenarios involving high-frequency speed changes and large-load impacts.
Installation Instructions: Before installation, clean the shaft and bearing housing, and apply extreme pressure grease; check the journal for scratches and the spline for damage; align the shaft according to the original markings and tighten the lock nut to the specified torque; after installation, run the machine under no-load for 5-10 minutes, and put it into use after confirming there are no abnormal noises/vibrations.
Selection and Replacement Recommendations
Prioritize original equipment manufacturer (OEM) parts or parts that meet Komatsu Transmission standards to avoid inferior parts that may cause premature wear and breakage of the shaft due to insufficient material or precision, damaging core components such as the gearbox and rear axle.
When the journal wear is ≥0.2mm, the spline tooth surface is damaged, bending deformation occurs, or transmission noise increases significantly, it is recommended to replace the shaft and its matching bearings immediately.
