803402646 XCMG GR2605 motor grader flange assembly

803402646 XCMG GR2605 motor grader flange assembly

Part Number: 803077032
Compatible Model: XCMG GR2605 Grader
Product Positioning: A high-pressure power core customized for the hydraulic system of graders, providing precise power supply for heavy-duty working devices such as blades, rippers, and steering systems.

Key Technical Parameters

1. Pressure and Flow Performance
Rated Working Pressure: 35MPa
Maximum Working Pressure: 40MPa
Rated Flow Rate: 80L/min (at 1800r/min)
Volume Efficiency: ≥97% (under rated operating conditions)
Operating Speed ​​Range: 800r/min~2800r/min
Flow Rate Adjustment Range: 0~100% (electro-hydraulic proportional control)

2. Structure and Dimensions
Structure Type: Swashplate Axial Piston Pump (Variable Displacement Pump Design)
Plunger Parameters: Piston Diameter 25mm, Number of Pistons: 9
Installation Method: Flange Mounting, Adapts to Original Engine Power Take-Off Interface
Inlet/Outlet Diameter: Suction Port G2″, Outlet Port G1 1/2″
Drive Method: Spline Shaft Drive (Spline Specifications According to Original Factory Standard)
Control Method: Electro-hydraulic Proportional Control + Manual Emergency Adjustment

3. Material and Weather Resistance
Pump Body Material: High-strength alloy cast iron QT500-7 (quenched and tempered), tensile strength ≥500MPa
Plunger/Swashplate Material: Plunger made of stainless steel 17-4PH (quenched), swashplate with Babbitt alloy coating

Bearing Type: High-precision tapered roller bearing, rated dynamic load ≥120kN

Seals: Imported polytetrafluoroethylene (PTFE) + fluororubber (FKM) combination seal, suitable for working environments from -40℃ to 130℃

Contamination Resistance Rating: ISO 17/14 (suitable for the cleanliness requirements of hydraulic oil in engineering machinery)

Core Functions and Application Scenarios

1. Main Functions

High-Pressure Power Output: Converts engine power into 40MPa high-pressure hydraulic energy to meet the power requirements of heavy-duty working devices.

Precise Flow Adjustment: Achieves flow rate adjustment from 0 to 100% through electro-hydraulic proportional control. Stepless adjustment to adapt to different operating loads
Overload and pressure relief protection: Integrated high-pressure relief valve and pressure relief valve provide dual protection against system overpressure damage
Self-priming and oil replenishment functions: Built-in self-priming valve, oil suction vacuum ≤0.07MPa, stable oil supply under low oil level conditions
Anti-cavitation design: Optimized oil suction channel structure reduces cavitation risk and improves adaptability to harsh working conditions

2.Suitable Working Conditions
Heavy-duty, high-intensity operations such as mining stripping and large-scale infrastructure construction
High-pressure demand scenarios such as heavy-duty shovel leveling and deep crushing with rippers
Complex working conditions such as high-frequency load switching and long-term continuous operation
Harsh working environments with high dust, mud and water erosion, and alternating high and low temperatures

Product Advantages

Original factory compatibility: Fully matches the GR2605 hydraulic system interface and control logic, direct installation without modification
High pressure and high efficiency: 40MPa maximum working pressure + 80L/min rated flow, strong power output, and high volumetric efficiency 97% Precise and Controllable: Electro-hydraulic proportional variable control ensures rapid flow adjustment response and high operational accuracy. Robust and Durable: High-strength materials and precision coating process provide wear and impact resistance, resulting in a long service life. Safe and Reliable: Dual overload protection and anti-cavitation design enable continuous operation under complex and harsh conditions. Convenient Maintenance: Standardized structure and modular design of vulnerable parts facilitate efficient disassembly and replacement.

Get a personalized quote now

1. 803268867 Fitting RED15/12LOMDCF
2. 803172037 Fitting EL15LOMDCF
3. 803190789 Flange Fitting GFS33/15LOMDCF
4. 803077467 Gear Pump WP15A1B330L05KA146N
5. 805006413 Bolt M12×35 GB/T5783-2000
6. 805338280 Gasket 12GB/T97.1-2002
7. 803191082 Flange Fitting GFS34/35LOMDCF
8. 380300729 Paper Gasket
9. 803304451 Fitting EW15LOMD71
10. 803164300 Fitting GE15L7/8UNFOMDCF
11 803190999 Fitting GE08L7/16UNFOMDCF
12 803164728 Fitting GE12L7/16UNFOMDCF
13 803424763 Flange Fitting GFS34/22LOMDCFU
14 803077032 Piston Pump FRL074BLS2617
15 803402646 Flange Assembly 5151HK-32
16 805338261 Gasket 12 GB/T93-1987
17 803192422 O-ring 125×2.65 GB/T3452.1-2005

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