Core Features
Load Transfer and Force Balance: The dual-hinge structure evenly distributes hydraulic thrust and impact loads to the working device, adapting to heavy-duty loading, rock breaking, and other working conditions.
Synchronized Movement Trajectory: Precisely limiting the connecting rod length and hinge point clearance ensures consistent trajectory for blade tilting and ripper lifting, improving operational accuracy.
Anti-torsional and Anti-eccentric Load Support: Acting as a rigid tie rod, it resists torsion and eccentric loads during operation, protecting the cylinder, pin, and frame connection points to prevent structural failure.
Clearance Compensation and Vibration Reduction: The elastic deformation of the bushing absorbs assembly gaps and impacts, reducing connecting rod vibration noise and hinge point wear.
Quick Loading/Unloading and Maintenance: Standard hinge point and bolt hole design accommodates common tools, shortening maintenance downtime.
Product Superiority
Original Factory Precision Fit: Manufactured according to Komatsu's original drawings, the rod length, hinge point spacing, and hole diameter are perfectly matched to the corresponding machine model, with a positioning accuracy of ≤0.03mm. No gaps, looseness, or abnormal wear are observed after assembly.
High Strength and Impact Resistance: Constructed with 42CrMo alloy structural steel, heat-treated, with a tensile strength ≥900MPa, yield strength ≥700MPa, and hardness HB260-300. Fatigue life under cyclic load exceeds 10⁴ cycles, suitable for heavy-duty vibration conditions on bulldozers.
Wear-Resistant and Stable: The bushings at both ends are made of high-strength brass with a self-lubricating layer, with a friction coefficient ≤0.08, increasing wear life by 3 times; the pin shaft undergoes quenching and nitriding treatment, with a surface hardness of HRC52-58, suitable for long-term heavy-duty operation.
Anti-loosening and corrosion-resistant: The pin is equipped with double nuts and anti-loosening washers; the bushing is sealed for dust prevention; the connecting rod surface is shot-blasted and treated with epoxy primer, with salt spray resistance ≥96 hours, suitable for dusty and humid working conditions.
Lightweight optimization: Finite element optimization of the cross-section reduces weight by 12%, lowering hydraulic energy consumption and structural inertial impact.
Applicable Scene
Suitable for Komatsu D40/D65/D85 bulldozers in heavy-duty continuous operation scenarios such as mining stripping, large-scale infrastructure, and land leveling. Especially compatible with the blade tilting mechanism and ripper lifting system. It is recommended to replace it at the same time as the bushing, pin, and dust ring to improve the reliability of the linkage system and the working accuracy.
