803089855 XCMG GR2605 motor grader shovel lifting cylinder

803089855 XCMG GR2605 motor grader shovel lifting cylinder

The XCMG GR2605 grader 803089855 shovel lifting cylinder is a key power actuator of the machine’s shovel operating system. It is manufactured in strict accordance with XCMG’s original design standards, GB/T 15242.1 hydraulic cylinder technical requirements, and heavy-duty hydraulic component specifications for construction machinery. It is specially customized for the GR2605 grader’s shovel lifting adjustment function, perfectly adapting to extreme scenarios with high loads, severe vibrations, and dense dust, such as highway construction and maintenance, airport runway grading, open-pit mine stripping, and large-scale water conservancy earthwork filling. As the “power core” of the blade’s movement, it converts the high-pressure energy of the hydraulic system into mechanical force, enabling precise lifting and heavy-duty support of the blade within a range of 0-800mm. This ensures the flatness and accuracy of the working surface and avoids work interruptions or accuracy deviations caused by cylinder leakage or lifting jamming. It is a high-quality original factory replacement part for the GR2605 grader after cylinder leakage, piston rod wear, seal failure, or insufficient power, eliminating the need to purchase and assemble parts piece by piece.

This shovel lifting cylinder adopts a heavy-duty alloy structure design: the cylinder body is made of 27SiMn high-strength alloy seamless steel pipe, precision honed (inner wall roughness Ra≤0.4μm), with an inner diameter tolerance ≤±0.02mm, a rated working pressure ≥35MPa, and an ultimate pressure resistance of 70MPa. It can withstand the high-pressure impact and continuous load during heavy-duty shovel operation, and the structure remains stable under 25g peak vibration conditions without deformation or bursting risk. The piston rod is made of 40Cr alloy tempered steel, with a hard chrome plating (plating thickness ≥0.08mm), a hardness ≥HRC60, excellent wear resistance, and corrosion resistance meeting the GB/T 10125 500-hour salt spray test standard, effectively resisting mud, dust erosion, and sand and gravel wear during shovel operation.

The cylinder sealing system adopts a heavy-duty leak-proof design: equipped with imported fluororubber (FKM) + polyurethane (PU) combined seals, including a main seal, bidirectional dustproof seal, and guide ring. The sealing pressure is ≥35MPa, effectively preventing internal leakage of high-pressure hydraulic oil and intrusion of external contaminants. The seals have a temperature resistance range of -40℃ to 120℃, and exhibit no swelling or aging under long-term heavy-duty operation, with a service life ≥10,000 hours. The piston rod root is equipped with a reinforced stainless steel dust cover, completely blocking large particles of sand and foreign objects, preventing scratches on the piston rod surface, and ensuring long-term stable sealing performance. The cylinder inlet and outlet ports use conical sealing joints, combined with high-pressure sealing rings, ensuring reliable and leak-free connections, and are compatible with the original vehicle’s high-pressure hydraulic lines.

The hydraulic cylinder transmission system features high-precision control characteristics: the piston is formed using an integrated forging process and is rigidly connected to the piston rod, with a transmission clearance ≤0.03mm. The lifting stroke is precisely controllable (customized stroke 800mm), and the lifting speed is uniform (40-60mm/s), without crawling or shaking, ensuring smooth lifting and operation accuracy of the shovel. A built-in bidirectional buffer mechanism achieves smooth deceleration at the end of the lifting stroke, reducing impact load damage to the hydraulic cylinder and shovel mechanism, and extending the overall service life. The hydraulic cylinder mounting pin is made of 45# quenched and tempered steel, treated with quenching, and equipped with self-lubricating bearings, ensuring flexible and smooth rotation without jamming, and a load capacity ≥500kN.

The product’s mounting holes, pin dimensions, and connector specifications are all precisely matched 1:1 to the original XCMG GR2605 vehicle blade system, with a hole tolerance of ±0.03mm. No additional processing or modification is required; it can be directly connected to the blade holder and vehicle frame mounting base. The hydraulic cylinder has undergone a pressure resistance test at twice the rated pressure (70MPa), with no leakage or permanent deformation. The installation torque is ≤45N・m. Two people using specialized tools can complete the entire disassembly and installation in 40 minutes. After installation, it perfectly matches the blade’s movement trajectory and does not affect the coordination of operational actions.

This shovel lifting cylinder has passed multiple authoritative tests and certifications: GB/T 15242.1 hydraulic cylinder technical requirements test, 10,000-hour fatigue life test (no leakage, no seal failure), 500-hour salt spray + UV aging test (no rust on metal parts), and wide temperature environment test from -40℃ to 80℃ (normal lifting action); its sealing performance has passed the hydraulic cylinder static sealing test, with a pressure drop of ≤0.3MPa after 24 hours of pressure holding; it is compatible with XCMG original anti-wear hydraulic oil (L-HM 46/68) and has excellent compatibility with hydraulic systems.

Core Technical Parameters

Part Model: 803089855
Part Name: Shovel Lifting Cylinder (Heavy-duty High-Pressure Hydraulic Cylinder Set)
Applicable Model: XCMG GR2605 motor grader
Compatible Components: GR2605 shovel operating system, hydraulic control system
Material: 27SiMn alloy cylinder body, 40Cr chrome-plated piston rod, imported FKM+PU combination seals, stainless steel dust cover, high-pressure connector
Process: Precision honing, chrome plating anti-corrosion treatment, integrated forged piston, heavy-duty sealing assembly, pressure resistance test calibration
Core Parameters: Rated pressure 35MPa, telescopic stroke 800mm, cylinder diameter 80mm, rod diameter 50mm, load capacity ≥500kN, protection level IP65, temperature range -40℃ to 120℃
Safety Certification: GB/T 15242.1 Hydraulic Cylinder Standard, ISO 6020/2 Safety Standard for Hydraulic Cylinders in Engineering Machinery
Features: High pressure and heavy load, multiple seals to prevent leakage, precise lifting control, wear-resistant and vibration-resistant, original factory precise fit
Functions: Shovel lifting drive and heavy load support, ensures flatness and accuracy of the working surface, withstands high pressure impact and continuous load, resists harsh environmental corrosion, and improves operational stability

Core Advantages

Original factory 1:1 mold customization, direct replacement without modification; heavy-duty alloy material + precision machining, high pressure resistance, impact resistance, and long service life; imported combination seals + enhanced dustproof, completely solving leakage problems; precise stroke control, shovel lifting error ≤±1mm; high load-bearing capacity suitable for heavy-duty operations; convenient installation, significantly reducing downtime maintenance time, ensuring operational efficiency and flatness accuracy.

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