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Product Description
The hydraulic pump coupling is a critical component in an excavator's powertrain, responsible for transmitting the engine's full power to the main hydraulic pump. It operates under immense torque and constant vibration. A worn or failed coupling will bring your entire machine to a standstill.
Yile Machinery manufactures robust, high-strength pump couplings designed as direct replacement parts for a wide range of excavator makes and models, ensuring your equipment gets back to work quickly.
Located between the engine flywheel and the hydraulic pump, this coupling hub must withstand the demanding environment of the engine bay. Its primary functions are:
High-Torque Transmission: To transfer engine power to the hydraulic system without slipping or failing.
Absorbing Driveline Vibrations: To dampen engine vibrations, protecting the delicate internal components of the hydraulic pump.
Failure is not an option. That's why material choice and manufacturing precision are paramount.
We build our excavator pump couplings to meet or exceed OEM specifications for strength and longevity.
Superior Material Strength: We start with high-grade forged steel (such as 42CrMo) . Unlike weaker cast parts, forging aligns the steel's grain structure, resulting in exceptional tensile strength, impact toughness, and resistance to fatigue failure.
Precision Spline Machining: The internal splines are the heart of the coupling. They are precision-cut using CNC machining to ensure a perfect, tight fit onto the hydraulic pump's shaft. This eliminates backlash and prevents premature wear on both the coupling and the pump shaft.
Heat Treatment: The splines and key contact surfaces often undergo a specialized heat treatment process to increase surface hardness, providing excellent wear resistance for a long service life.
Direct OEM Replacement: Designed to fit perfectly in place of the original part.
High-Strength Forged Steel: Offers maximum durability and resistance to shock loads.
Precision-Machined Splines: Ensures a secure fit and efficient power transmission.
Cost-Effective Solution: Provides OEM-level quality and reliability without the high dealer price tag.
Restores Driveline Integrity: Replaces a worn coupling to prevent damage to the pump and engine.
We manufacture hydraulic pump couplings compatible with a vast range of excavators from leading brands like Caterpillar, Komatsu, Hitachi, Hyundai, Volvo, Doosan, and more.
Find Your Excavator Pump Coupling
Don't let a failed coupling stop your project. Contact us with your excavator make, model, or the original part number to get a quote on a reliable replacement coupling.
