380603206 XCMG GR2605 motor grader oil suction transition flange

380603206 XCMG GR2605 motor grader oil suction transition flange

Part Number: 380603206
Compatible Model: XCMG GR2605 Grader
Product Positioning: A transition connection core specifically designed for the hydraulic system suction circuit of the GR2605 grader, used for precise connection between the oil tank and the hydraulic pump suction port, ensuring smooth oil suction and reliable sealing.

Key Technical Parameters

1. Pressure and Load Bearing Capacity
Rated Working Pressure: -0.09MPa~1.6MPa (suitable for negative pressure conditions in oil suction circuits)
Maximum Compressive Strength: ≥60MPa
Leakage Rate: ≤0.005cm³/h (under rated negative pressure)
Negative Pressure Deformation: ≤0.1mm (under rated negative pressure conditions)

2. Structure and Dimensions
Structural Form: Transition flange (with stepped positioning design)
Connection Standard: Complies with GB/T 9119-2010 Engineering Machinery Flange Standard
Installation Method: Bolt fastening + locating pin fixing, compatible with original factory mounting holes
Main Dimensions: Nominal diameter DN65, flange outer diameter 180mm, thickness 22mm, 8 bolt holes (20mm diameter), transition interface inner diameter 58mm (suitable for oil suction pipe specifications)

3. Material and Weather Resistance
Body Material: High-quality aluminum alloy 6061-T6 (Forged + Anodized), Tensile Strength ≥290MPa
Sealing Surface Treatment: Surface precision ground, roughness Ra≤1.2μm, with dedicated sealing groove
Sealing Component Compatibility: Compatible with nitrile rubber (NBR) and fluororubber (FKM) oil-absorbing gaskets, suitable for working environments from -40℃ to 120℃
Corrosion Resistance: Double protection with anodizing and anti-corrosion coating, no rust after ≥800 hours of salt spray testing

Core Functions and Application Scenarios

1. Main Functions
Transition Connection: Achieves precise transition connection between the oil tank outlet and the hydraulic pump suction port, matching different interface specifications.
Sealing and Leak Prevention: Through the cooperation of the sealing groove and dedicated sealing gasket, it blocks air intake and hydraulic oil leakage, ensuring the suction vacuum.
Anti-Deformation Support: Withstands the negative pressure and installation stress of the suction circuit, preventing flange deformation from causing poor suction.
Positioning Guidance: Precisely positions the hydraulic pump suction port installation position, ensuring the accuracy of the suction pipeline connection.

2. Suitable Working Conditions: Heavy-duty operations such as highway construction, mine stripping, and airport runway construction; Working scenarios involving frequent start-stop of hydraulic pumps and fluctuating suction pressure; Harsh working environments with high dust levels, mud and water corrosion, and alternating high and low temperatures.

Product Advantages:

Original Factory Compatibility: Fully matches the suction circuit interface dimensions and installation logic of the GR2605 hydraulic system, allowing for direct installation without modification.
Precise Connection: Step positioning + precise size control ensures error-free suction pipe connection and smooth suction.
Reliable Sealing: Dedicated sealing groove + suction-specific sealing gasket prevents air intake and oil leakage, improving hydraulic pump efficiency.
Lightweight and Durable: Lightweight design made of aluminum alloy, high strength, corrosion resistance, and long service life.
Easy Installation: Standardized structure + locating pin design ensures high assembly efficiency and convenient maintenance and replacement.

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