803083495 XCMG GR2605 motor grader gear pump

803083495 XCMG GR2605 motor grader gear pump

Part Number: 803083495
Compatible Model: XCMG GR2605 Grader
Product Positioning: Provides stable medium-to-high pressure hydraulic oil for the steering system, auxiliary working devices, and other circuits; a key power component ensuring the efficient operation of the hydraulic system.

Key Technical Parameters

1. Pressure and Flow Performance
Rated Working Pressure: 28MPa
Maximum working pressure: 35MPa
Rated Flow Rate: 55L/min (at 1500r/min)
Volume Efficiency: ≥94% (under rated operating conditions)
Operating Speed ​​Range: 500r/min~2400r/min

2. Structure and Dimensions
Structure Type: High-pressure external gear pump (single pump design, integrated relief valve)
Gear Parameters: Module 3.5mm, Number of Teeth 16, Tooth Width 25mm
Installation Method: Flange mounting, compatible with original engine power take-off interface
Inlet/Outlet Diameter: Suction port G1 1/4″, Outlet port G1″
Drive Method: Splined shaft drive (spline specifications according to original factory standards)

3. Material and Weather Resistance
Pump Body Material: High-strength cast iron HT250 (quenched + Precision ground), tensile strength ≥250MPa
Gear material: High-quality alloy structural steel 20CrMnTi (carburized and quenched), hardness HRC58-62
Bearing type: High-pressure needle roller bearing, rated dynamic load ≥75kN
Seals: Imported fluororubber (FKM) sealing components, suitable for working environments from -40℃ to 120℃
Contamination resistance rating: ISO 18/15 (suitable for the cleanliness requirements of hydraulic oil in engineering machinery)

Core functions and application scenarios

1. Main Functions
* **Power Output:** Converts engine power into hydraulic energy, providing stable medium-to-high pressure hydraulic oil to steering, auxiliary working devices, and other circuits.
* **Stable Oil Supply:** External meshing gear structure design minimizes flow fluctuations at different speeds, ensuring smooth actuator operation.
* **Overload Protection:** Integrated built-in overflow valve prevents system overpressure damage to the pump body and pipelines, enhancing operational safety.
* **Self-priming Capability:** Excellent self-priming performance; suction vacuum ≤0.075MPa, allowing normal operation under low oil level conditions.
* **Anti-cavitation Design:** Optimized suction channel structure reduces cavitation risk, adapting to continuous operation under complex conditions.

2.Suitable Working Conditions
* Medium-to-heavy load operations such as highway construction and airport runway construction.
* Power output scenarios involving high frequency start-stop and long-term continuous operation.
* Harsh working environments with high dust, mud and water erosion, and alternating high and low temperatures.
* Complex working conditions requiring coordinated operation of the steering system and auxiliary working devices.

Product Advantages

* **Original Factory Compatibility:** Fully matches the power requirements and installation interface of the GR2605 hydraulic system, requiring no modification for direct installation.
* **Power Stability:** 35MPa Maximum working pressure + 55L/min rated flow rate, meeting the power output requirements of medium and heavy-duty working conditions. High efficiency and durability: High-quality alloy gears + high-pressure bearing design, high volumetric efficiency, wear-resistant and impact-resistant, long service life. Safe and reliable: Integrated overload protection function, strong self-priming capability, and anti-cavitation design adaptable to complex working conditions. Convenient Maintenance: Standardized structural design, simple disassembly and assembly, efficient replacement of wearing parts, reducing downtime for maintenance.

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