4385639 Bushing, Link & Bucket Backhoe for Hitachi Excavators
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Premium Aftermarket 4385639 Bushing, Link & Bucket Backhoe for Hitachi Excavators
Upgrade your Hitachi excavator with our high-quality aftermarket 4385639 Bushing, Link & Bucket Backhoe. This essential component ensures smooth and efficient operation of your backhoe attachment, providing reliable performance for all your excavation tasks.
At SWAFLY MACHINERY CO., LIMITED, we specialize in providing top-tier excavator parts and mining equipment parts in China. Established in 2009, we bring over 15 years of experience to the industry. Our expertise allows us to supply a quality-trusted full range of machinery engines, hydraulic pumps, and travel final motor drives. We also offer agricultural tractor machinery engines from renowned brands like KUBOTA and Yanmar.
Our company leverages extensive resources and integrates the technology and experience of leading engine manufacturers. We operate advanced maintenance workshops, focusing on mechanical dismantling, engine, and hydraulic system assembly maintenance and regeneration. This enables us to offer a comprehensive machine and parts renewal service. We are committed to developing cost-effective OEM or high-quality aftermarket products and providing a full spectrum of aftermarket services to our global clientele.
Understanding Key Components: Hydraulic Pumps and Travel Final Motor Drives
As part of our commitment to providing comprehensive information, here are some explanations of hydraulic pumps and travel final motor drives commonly used in engineering machinery:
Hydraulic Pump (液压泵)
English: A mechanical device that converts mechanical power into hydraulic energy (typically in the form of flow and pressure). In excavators, the hydraulic pump powers various hydraulic cylinders and motors for functions like digging, lifting, and swinging.
Chinese: 将机械能转换为液压能（通常以流量和压力的形式）的机械装置。在挖掘机中，液压泵为各种液压缸和马达提供动力，以实现挖掘、提升和回转等功能。
Example: Hitachi ZX200-3 Excavator, Main Hydraulic Pump, Part Number: 9267288. Located in the engine compartment, connected to the engine's flywheel.
Travel Final Drive (行走终传动)
English: The final gear reduction mechanism in the undercarriage of an excavator that transmits power from the travel motor to the track sprocket, enabling the machine to move.
Chinese: 挖掘机底盘中的最终减速机构，它将行走马达的动力传递到履带驱动轮，使机器能够移动。
Example: Hitachi ZX210LC-5 Excavator, Travel Final Drive Assembly (Left), Part Number: 9286116. Located at the end of the undercarriage, driving the tracks.
Gear Pump (齿轮泵)
English: A type of positive displacement hydraulic pump that uses the meshing of gears to pump fluid.
Chinese: 一种容积式液压泵，它使用齿轮的啮合来泵送流体。
Example: Komatsu PC200-8 Excavator, Gear Pump (for pilot circuit), Part Number: 702-16-03070. Typically located near the main hydraulic pump.
Axial Piston Pump (轴向柱塞泵)
English: A type of positive displacement hydraulic pump that uses pistons moving parallel to the axis of rotation to pump fluid. Often used as the main hydraulic pump in excavators.
Chinese: 一种容积式液压泵，它使用平行于旋转轴线运动的活塞来泵送流体。常用于挖掘机的主液压泵。
Example: Caterpillar 320D Excavator, Main Hydraulic Pump, Part Number: 244-2200. Located in the engine compartment.
Hydraulic Motor (液压马达)
English: A rotary actuator that converts hydraulic power into mechanical power. Used in excavators for functions like swing motion and travel.
Chinese: 一种旋转执行器，将液压能转换为机械能。在挖掘机中用于回转和行走等功能。
Example: Hitachi EX60-5 Excavator, Swing Motor Assembly, Part Number: 4364897. Located at the base of the upper structure.
Planetary Gearbox (行星齿轮箱)
English: A type of gearbox that uses planetary gears to transmit power and reduce speed. Commonly found in travel final drives and swing reduction units of excavators.
Chinese: 一种使用行星齿轮传递动力和降低速度的齿轮箱。常见于挖掘机的行走终传动和回转减速器中。
Example: Kobelco SK200-8 Excavator, Travel Reduction Gear (Final Drive), Part Number: MA5100R6-L10. Integrated within the travel final drive assembly.
Swash Plate (斜盘)
English: A component in some axial piston pumps that controls the stroke of the pistons, thereby regulating the flow rate of the pump.
Chinese: 某些轴向柱塞泵中的一个组件，用于控制活塞的行程，从而调节泵的流量。
Example: Component within a Kawasaki K3V112 Hydraulic Pump used in various excavators, no specific external part number.
Spool Valve (滑阀)
English: A type of directional control valve that uses a cylindrical spool to control the flow of hydraulic fluid in a system.
Chinese: 一种方向控制阀，它使用圆柱形阀芯来控制系统中液压油的流动。
Example: Hyundai R220LC-9 Excavator, Main Control Valve Spool, Part Number: 31QA-40020. Located within the main control valve assembly.
Case Drain Line (壳体泄漏管路)
English: A line that carries away internal leakage from a hydraulic pump or motor, preventing pressure buildup and potential damage.
Chinese: 一条用于排出液压泵或马达内部泄漏的管路，防止压力积聚和潜在损坏。
Example: Typically a hose or pipe connected to the housing of any hydraulic pump or motor, specific part numbers vary by model.
Servo Piston (伺服活塞)
English: A small piston used in some hydraulic pumps and motors to control the position of other components, such as the swash plate in a variable displacement pump.
Chinese: 一种小型活塞，用于某些液压泵和马达中，以控制其他组件的位置，例如变量泵中的斜盘。
Example: Component within a Bosch Rexroth A10VSO Hydraulic Pump used in various excavators, no specific external part number.
Common Questions About Excavator Parts
What are the signs of a failing hydraulic pump in an excavator?
Common signs include slow or weak hydraulic functions, unusual noises (whining or grinding), overheating of hydraulic fluid, and milky or contaminated fluid.
How often should I replace the hydraulic filters in my excavator?
Generally, hydraulic filters should be replaced every 500 to 1000 hours of operation, or as recommended by the excavator manufacturer's service manual.
What is the function of the travel motor in an excavator?
The travel motor, connected to the travel final drive, provides the rotational power to move the excavator's tracks, allowing it to travel across different terrains.
Our Business: Your Trusted Partner for Excavator and Mining Equipment Parts
SWAFLY MACHINERY CO., LIMITED specializes in providing high-quality excavator parts and mining equipment parts from our base in China. Since our establishment in 2009, we have dedicated ourselves to offering a comprehensive range of reliable machinery components.
Our core offerings include:
- Quality-trusted full range of machinery engines
- High-performance hydraulic pumps for various excavator models
- Durable travel final motor drives for smooth operation
- Agricultural tractor machinery engines from KUBOTA and Yanmar
We leverage our extensive industry experience and strong relationships with leading manufacturers to provide cost-effective OEM and high-quality aftermarket solutions. Our commitment extends beyond just supplying parts; we also offer comprehensive aftermarket services to ensure the longevity and optimal performance of your machinery.
Engine Troubleshooting: Overheating
Problem: Excavator engine overheating.
Possible Causes and Solutions:
- Low Coolant Level: Check the coolant level in the radiator and expansion tank. Add the recommended coolant mixture if the level is low.
- Faulty Thermostat: The thermostat regulates the flow of coolant. If it's stuck closed, the engine can overheat. Consider replacing the thermostat.
- Clogged Radiator: Inspect the radiator fins for dirt, debris, or bent fins. Clean the radiator externally with compressed air or water. If severely clogged internally, it may need professional cleaning or replacement.
- Water Pump Failure: The water pump circulates coolant through the engine. If it's failing, there might be a leak or no circulation. Inspect the water pump for leaks or unusual noises. Replacement might be necessary.
- Loose or Damaged Fan Belt: The fan belt drives the cooling fan. Ensure the belt is tight and in good condition. Replace if loose, cracked, or broken.
Mobile/WeChat/WhatsApp: +86 13570162348
Email: sales05@swaflyexcavator.cn
Email: sales05@swaflyexcavator.cn
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