ADAPTER;S 4221278 - Hitachi
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Genuine Hitachi ADAPTER;S - Part Number 4221278
The Hitachi ADAPTER;S with the part number 4221278 is a crucial component for your Hitachi excavator. Ensure optimal performance and durability by using genuine parts.
SWAFLY MACHINERY CO., LIMITED specializes in excavator parts and mining equipment parts in China. Founded in 2009, we can supply a quality-trusted full range of machinery engines, hydraulic pumps, and travel final motor drives based on more than 15 years of endeavor and experience. We also provide agricultural tractor machinery engines with KUBOTA and Yanmar brands.
Our company leverages resources and incorporates the technology and experience of leading engine manufacturers to operate maintenance workshops. We have developed platforms for mechanical dismantling, engine and hydraulic system assembly maintenance, and regeneration. Additionally, we conduct complete machine and parts renewal business. We timely develop cost-effective OEM or high-quality aftermarket products, providing a full range of aftermarket services for our global customers.
Engineering Machinery Hydraulic Pumps and Travel Final Motor Drives Explained
Hydraulic Pump (液压泵)
Function: Converts mechanical energy into hydraulic energy, supplying pressurized fluid to hydraulic cylinders and motors.
Installation Location: Typically mounted on the engine or gearbox of the excavator and connected to the hydraulic fluid reservoir.
Example: Hitachi Main Hydraulic Pump for ZX200-3 excavator, Part Number: 9270584 (Note: This is a representative real part number; always verify with your specific model).
Travel Final Motor Drive (行走终传动马达)
Function: Converts hydraulic energy into rotational mechanical energy to drive the excavator tracks or wheels.
Installation Location: Located within the undercarriage of the excavator, directly connected to the track sprocket or wheel hub.
Example: Komatsu Travel Motor Assembly for PC200-8 excavator, Part Number: 708-2L-00310 (Note: This is a representative real part number; always verify with your specific model).
Gear Pump (齿轮泵)
Function: A type of hydraulic pump that uses the meshing of gears to pump fluid by displacement.
Installation Location: Can be used in various parts of the hydraulic system, often for auxiliary functions.
Example: Caterpillar Gear Pump for 320D excavator, Part Number: 224-4536 (Note: This is a representative real part number; always verify with your specific model).
Piston Pump (柱塞泵)
Function: A type of hydraulic pump that uses reciprocating pistons to move fluid.
Installation Location: Typically used as the main hydraulic pump in excavators due to its high-pressure capability.
Example: Volvo Piston Pump for EC210B excavator, Part Number: VOE14525782 (Note: This is a representative real part number; always verify with your specific model).
Vane Pump (叶片泵)
Function: A type of hydraulic pump that uses vanes mounted to a rotating rotor to move fluid.
Installation Location: Often used for lower pressure applications in the hydraulic system.
Example: Kawasaki Vane Pump for various excavator models, Part Number: K3V63DT-9U5K (Note: This is a representative real part number; always verify with your specific model).
Swing Motor (回转马达)
Function: A hydraulic motor that powers the rotation of the excavator's upper structure (house).
Installation Location: Mounted on the excavator's upper structure and connected to the swing gearbox.
Example: Hitachi Swing Motor for ZX240 excavator, Part Number: 9266478 (Note: This is a representative real part number; always verify with your specific model).
Track Drive Motor (履带驱动马达)
Function: Another term for the travel final motor, specifically for tracked excavators.
Installation Location: Inside the excavator undercarriage, driving the tracks.
Example: Kubota Track Drive Motor for KX161-3 excavator, Part Number: V05AM00411 (Note: This is a representative real part number; always verify with your specific model).
Pilot Pump (先导泵)
Function: A smaller hydraulic pump that provides the pilot pressure needed to operate the main control valves of the excavator.
Installation Location: Usually attached to the main hydraulic pump or driven by the engine.
Example: Sany Pilot Pump for SY215C excavator, Part Number: B222100000750 (Note: This is a representative real part number; always verify with your specific model).
Boost Pump (增压泵)
Function: A hydraulic pump used to increase the pressure of the fluid before it enters the main hydraulic pump, improving efficiency.
Installation Location: Located in the hydraulic system between the reservoir and the main pump.
Example: Doosan Boost Pump for DX225LC-9 excavator, Part Number: 440211-00047 (Note: This is a representative real part number; always verify with your specific model).
Axial Piston Pump (轴向柱塞泵)
Function: A type of piston pump where the pistons move parallel to the axis of the cylinder block.
Installation Location: Commonly used as the main hydraulic pump in modern excavators.
Example: Liebherr Axial Piston Pump for R914 Compact excavator, Part Number: 10164707 (Note: This is a representative real part number; always verify with your specific model).
Common Knowledge about Excavator Parts
Q: What is the role of hydraulic oil in an excavator?
A: Hydraulic oil is the lifeblood of an excavator's hydraulic system. It transmits power, lubricates moving parts, cools components, and protects against corrosion.
Q: How often should I replace the hydraulic filters on my excavator?
A: Regularly changing hydraulic filters is crucial for maintaining the cleanliness of the hydraulic fluid and preventing damage to the system. The recommended interval varies by manufacturer but is generally between 250 to 500 hours of operation.
Q: What are some signs of a failing travel motor?
A: Symptoms of a failing travel motor can include reduced travel speed, inability to move in one direction, unusual noises from the undercarriage, or oil leaks around the motor.
Our Business
SWAFLY MACHINERY CO., LIMITED is your reliable partner for high-quality excavator and mining equipment parts. We specialize in providing a comprehensive range of machinery engines, hydraulic pumps, and travel final motor drives. With over 15 years of experience in the industry, we offer both OEM and high-quality aftermarket solutions to meet your specific needs. Our commitment to quality and customer satisfaction makes us a trusted supplier for global clients.
Common Excavator Engine Failure and Solution
Failure: Engine Overheating
Description: One common issue with excavator engines is overheating. This can be caused by several factors, including low coolant levels, a faulty thermostat, a blocked radiator, or a malfunctioning water pump.
Solution:
- Check Coolant Level: Ensure the coolant level in the radiator and expansion tank is within the recommended range.
- Inspect for Leaks: Look for any signs of coolant leaks around hoses, the radiator, water pump, and engine block. Repair any leaks immediately.
- Check Radiator: Clean any dirt, debris, or obstructions from the radiator fins. Make sure the airflow is not restricted.
- Test Thermostat: A faulty thermostat can prevent proper coolant circulation. Consider replacing the thermostat if it's not functioning correctly.
- Inspect Water Pump: Ensure the water pump is working by checking for coolant flow when the engine is running. A failing water pump will need replacement.
- Check Fan and Fan Belt: Verify that the engine fan is rotating properly and the fan belt is in good condition and correctly tensioned.
Regular maintenance checks can help prevent engine overheating and ensure the longevity of your excavator.
Visit our website for more information on Hitachi and other excavator parts:
Mobile/WeChat/WhatsApp: +86 13570162348
Email: sales05@swaflyexcavator.cn
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