Parameter Category | Specifications / Description |
Structure Type | Double-hinge solid rod assembly (with bushing mounting holes at both ends + 4 sets of bolt positioning holes) |
Material | Rod body: 42CrMo alloy structural steel (quenched and tempered HB280-320); Bushing: High-strength brass + PTFE self-lubricating layer; Pin: 40Cr (quenched + nitrided HRC54-58) |
Dimensions | Rod length 1080mm, rod diameter 62mm, hinge hole diameter 58mm, bushing outer diameter 58mm / inner diameter 50mm, compatible with original pins and fasteners |
Load Capacity | Rated axial load ≤160kN, rated radial load ≤100kN, compatible with D85 maximum operating load conditions |
Operating Temperature | -30℃~100℃ |
Surface Treatment | Rod body shot peening + epoxy primer + topcoat, salt spray resistance ≥120 hours; Pin blackened + anti-rust oil |
Product Condition | Brand new, conforms to ISO 6336-1 and Komatsu original structural component quality standards |
Warranty Period | subject to supplier commitment |
Product Superiority
Original Factory Precision Fit: Manufactured according to Komatsu's original drawings, the rod length, hinge point spacing, and pin hole diameter perfectly match the hinge points of the corresponding model, with a positioning accuracy of ≤0.03mm. After assembly, it fits tightly with the pin/bushing without any gaps, looseness, or abnormal wear.
Extra-Heavy-Duty Strength Guarantee: Constructed with 42CrMo alloy structural steel, heat-treated, with a tensile strength ≥950MPa, yield strength ≥750MPa, hardness HB280-320, torsional stiffness ≥1500N・m/°, and fatigue life exceeding 10⁴ cycles under cyclic loads, suitable for the maximum operating load conditions of D85.
Wear-Resistant and Stable: The bushings at both ends are made of high-strength brass + PTFE self-lubricating layer, with a friction coefficient ≤0.07, increasing wear life by 3 times; the pin is quenched and nitrided, with a surface hardness of HRC54-58, suitable for long-term heavy-duty operation.
Anti-loosening and corrosion-resistant reinforcement: The pin is equipped with double nuts + anti-loosening washers + cotter pins; the bushing has a dustproof sealing ring; the connecting rod surface is shot-blasted + epoxy primer + topcoat treatment, with salt spray resistance ≥120 hours, suitable for dusty and humid/mining conditions.
Lightweight structural optimization: Finite element optimization of the rod cross-section reduces weight by 10%, lowering hydraulic energy consumption and structural inertial impact.
Applicable Scene
Suitable for Komatsu D65/D85 bulldozers in heavy-duty continuous operation scenarios such as earthmoving, mining stripping, 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 operating accuracy.
