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+86-17692703999
+86-17692703999 No. 6, West Side Auxiliary Road,
Sunshine Street, Linxi County, Xingtai
City, Hebei Province
Sunshine Street, Linxi County, Xingtai
City, Hebei Province
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LG853.11.08 LG50F.11001-002 LG855BIV.11.09
wheel Loader Pin Shaft
1. High strength alloy material and ultimate heat treatment
Material upgrade: 42CrMoV alloy structural steel (containing V element to enhance fatigue crack propagation resistance) is used. Compared with ordinary 42CrMo steel, the tensile strength is increased to ≥ 1150MPa, the yield strength is ≥ 1000MPa, the impact absorption energy (Akv) is ≥ 85J, and it can withstand the instantaneous impact load (about 120kN) of LG855 loader loaded with 5 tons of material.
Heat treatment process:
Vacuum quenching+tempering (vacuum degree ≤ 10 ⁻⁴ Pa): to avoid oxidation and decarburization, the core hardness reaches HRC36-40, and the surface is quenched by carburizing to HRC60-62, forming a gradient structure of "external hardness and internal toughness";
Time treatment (180 ℃ × 24h): eliminate residual stress, improve dimensional stability, and achieve deformation of ≤ 0.01mm/m during long-term use.
2. Accurately adapt to the structural design of LG855
Customized dimensions: Designed based on the three-dimensional data of the LG855 loader hinge point, with key dimensions (such as shaft diameter of Φ 70mm ± 0.01mm, effective length of 420mm ± 0.05mm) having a tolerance of ≤ 0.02% from the original factory drawing. Suitable for bucket and boom hinge holes, with clearance controlled between 0.06-0.1mm to ensure zero shaking.
Oil passage optimization: The axial oil passage diameter is 6mm, with 6 radial oil outlet holes (2.5mm) at the end. When adding butter, a 360 ° annular lubricating film is formed, which improves lubrication efficiency by 50% compared to traditional designs and reduces dry friction wear.
wheel Loader Pin Shaft
1. High strength alloy material and ultimate heat treatment
Material upgrade: 42CrMoV alloy structural steel (containing V element to enhance fatigue crack propagation resistance) is used. Compared with ordinary 42CrMo steel, the tensile strength is increased to ≥ 1150MPa, the yield strength is ≥ 1000MPa, the impact absorption energy (Akv) is ≥ 85J, and it can withstand the instantaneous impact load (about 120kN) of LG855 loader loaded with 5 tons of material.
Heat treatment process:
Vacuum quenching+tempering (vacuum degree ≤ 10 ⁻⁴ Pa): to avoid oxidation and decarburization, the core hardness reaches HRC36-40, and the surface is quenched by carburizing to HRC60-62, forming a gradient structure of "external hardness and internal toughness";
Time treatment (180 ℃ × 24h): eliminate residual stress, improve dimensional stability, and achieve deformation of ≤ 0.01mm/m during long-term use.
2. Accurately adapt to the structural design of LG855
Customized dimensions: Designed based on the three-dimensional data of the LG855 loader hinge point, with key dimensions (such as shaft diameter of Φ 70mm ± 0.01mm, effective length of 420mm ± 0.05mm) having a tolerance of ≤ 0.02% from the original factory drawing. Suitable for bucket and boom hinge holes, with clearance controlled between 0.06-0.1mm to ensure zero shaking.
Oil passage optimization: The axial oil passage diameter is 6mm, with 6 radial oil outlet holes (2.5mm) at the end. When adding butter, a 360 ° annular lubricating film is formed, which improves lubrication efficiency by 50% compared to traditional designs and reduces dry friction wear.
