804000940 XCMG GR2605 motor grader shovel swing cylinder

804000940 XCMG GR2605 motor grader shovel swing cylinder

The XCMG GR2605 grader 804000940 shovel swing cylinder is a key angle adjustment actuator in the entire 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 left and right swing adjustment function of the GR2605 grader’s blade, 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 a “precision actuator” for blade angle adjustment, it converts the high-pressure energy of the hydraulic system into swing torque, enabling precise swing of the blade within a ±30° range. It adapts to the leveling needs of different slopes and surfaces, avoiding deviations in work accuracy or equipment failures caused by cylinder leakage or swing jamming. It is a high-quality original replacement part for the GR2605 grader after cylinder leakage, piston rod wear, seal failure, or weak swing, eliminating the need for piecemeal parts.

This shovel swing 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 bidirectional high-pressure impact and continuous load during shovel swing 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 treatment (plating thickness ≥0.08mm), a hardness ≥HRC60, excellent wear resistance, and corrosion resistance reaching 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 bidirectional main seal, dust 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 angle control: the piston is formed using an integrated forging process and is rigidly connected to the piston rod, with a transmission clearance ≤0.03mm. The swing stroke is precisely controllable (corresponding to a ±30° swing angle of the blade), and the swing speed is uniform (5°-8°/s), without crawling or shaking, ensuring smooth blade angle adjustment and operational accuracy. A built-in bidirectional buffer mechanism achieves smooth deceleration at the end of the swing stroke, reducing impact load damage to the hydraulic cylinder and blade mechanism, and extending 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, with a swing torque ≥800N・m.

The product’s mounting holes, pin dimensions, and connector specifications are precisely matched 1:1 to the original XCMG GR2605 shovel system, with a hole tolerance of ±0.03mm. No additional processing or modification is required; it can be directly connected to the shovel holder and swing mechanism. 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, and two people using specialized tools can complete the entire disassembly and installation in 40 minutes. After installation, it perfectly matches the shovel’s movement trajectory and does not affect the coordination of operational actions.

This shovel swing 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 swing 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: 804000940
Part Name: Shovel Swing Cylinder (High-Pressure Two-Way 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, swing angle ±30°, cylinder diameter 80mm, rod diameter 50mm, swing torque ≥800N・m, 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 bidirectional oscillation, multiple leak-proof seals, precise angle control, wear-resistant and vibration-resistant, original factory precise fit
Functions: Left and right shovel oscillation adjustment, adaptable to different slope operations, withstands bidirectional high-pressure impact, resists harsh environmental corrosion, improves work flatness and flexibility

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 angle control, oscillation error ≤ ±0.5°; high torque output adaptable to heavy-duty oscillation; convenient installation, significantly reducing downtime maintenance time, ensuring work efficiency and flatness accuracy.

Get a personalized quote now

1. 803090598 Front Wheel Tilt Cylinder
2. 803089855 Blade Lifting Cylinder
3. 804000940 Blade Swing Cylinder
4. 803380612 Hose Assembly
5. 803198745 Hose Assembly
6. 803082299 Blade Extension Cylinder
7. 803081220 Shovel Angle Changing Cylinder
8. 380603199 Left Multi-way Valve Connector Installation
9. 803077608 Right Articulated Steering Cylinder
10. 380603200 Right Multi-way Valve Connector Installation
11. 803083235 Articulated Steering Cylinder

*For other spare parts procurement needs, please contact us!