Hydraulic gear pumps play a key role in the efficient operation of hydraulic systems, making their maintenance a critical aspect of system reliability. When problems are encountered, the system's fixes ensure optimal performance. The process begins with a careful inspection of the pump's components and then careful disassembly to assess any wear or damage. This article provides you with the basic steps to successfully repair a hydraulic gear pump.
**The most commonly used pump in modern hydraulic systems-external gear pump
**Three major causes of hydraulic pump failure
**How to repair the hydraulic gear pump?
*The most commonly used pump in modern hydraulic systems-external gear pump
In contemporary hydraulic systems, external gear pumps have become the main choice. The integration of finite element method (FEM) simulation with modern manufacturing technology has resulted in a range of hydraulic systems that effectively meet efficiency, reliability and noise reduction requirements. Poocca carries a large range of Marzocchi hydraulic gear pumps and motors in stock, ensuring fast delivery.
The range of positive displacement hydraulic gear pumps are available in single or multi-pump configurations and can optionally include an integral relief valve depending on specific requirements.
As well as an extensive stock of gear pumps available for next day delivery, Poocca offers technical expertise tailored to both complex and simple applications. The customer specifies the application and Poocca customizes the pump accordingly.
These hydraulic gear pumps are known for their high overall efficiency, often exceeding 90%. The product range is available in a variety of mounting styles, including compliance with SAE and DIN standards.
The variety of materials used during construction ensures adaptability to different fluids and environmental conditions. This includes a new series featuring cast iron valve bodies, cast iron flanges and hydraulic gear pumps for applications requiring high pressure, optimum performance and durability.
A comprehensive range of reversible units and gear motors complements the hydraulic pump range, making it suitable for a wide range of industrial processes, heavy equipment, agriculture, offshore marine and commercial applications.
Essentially, the customer specifies the application and Poocca specifies the gear pump. The Hydraulic External Gear Pump features an exploded view of the basic pump components illustrating its basic design and construction.
These hydraulic gear pumps and motors are capable of operating under heavy load conditions, efficiently transmitting high hydraulic power with superior hydraulic, mechanical and volumetric efficiencies. In addition, they maintain low noise levels and feature compact dimensions and a low weight-to-power ratio, making them ideal for industrial and mobile applications.
The basic components include the gear set, housing, retaining flange and cover supported by two aluminum liners.
The shaft of the drive gear mounted on the outside of the flange is equipped with a sealing ring coupled with a metal ring to enhance the setting. Both rings are held in place with elastic clasps.
The body is made of high-strength special aluminum alloy to minimize deformation even under high pressure. Cast iron pump bodies and motors are also available for applications requiring high pressure, optimal performance and durability. Depending on the model series, the flange and cover are made of cast iron or aluminum alloy using a continuous flow casting process and final phosphating.
The gears are made of special grade steel, case hardened and quenched. Precision machining and grinding are used to achieve high surface smoothness. Carefully designed gear shapes and geometric proportions ensure minimal pulsation and low noise levels during motor operation.
The bushings are made from a special low-friction, high-wear-resistant aluminum alloy and feature wear-resistant DU bearings with tight tolerances.
The liner has unique and symmetrical compensation areas isolated by special prefabricated seals with anti-extrusion rings. This design allows complete freedom of axial and radial movement of the bushing, proportional to the operating pressure of the motor. This approach significantly reduces internal leakage, ensuring excellent pump performance in terms of mechanical efficiency and overall efficiency, while providing proper lubrication to the pump's moving parts.
*Three major causes of hydraulic pump failure
Hydraulic pump failure can be attributed to three main reasons, so it is critical for facilities, especially those that rely on hydraulic systems for critical processes, to understand and address these issues to prevent costly damage to their hydraulic systems. damage. This article will focus on the three main causes of hydraulic pump failure.
1. Hydraulic oil pollution:
Hydraulic oil contamination is the primary cause of many hydraulic pump failures. It is essential to ensure that the hydraulic oil is dry, cool and, most importantly, clean. The presence of any fluid contamination can cause rapid wear and ultimately failure of the hydraulic pump, resulting in damage to various components of the hydraulic system. To prevent hydraulic oil contamination, measures such as proper cleaning of the hydraulic system, removal of welding burrs, or installation of effective filters should be taken to prevent any particles from entering the hydraulic system and mixing with the hydraulic oil.
2. Use high-quality hydraulic oil:
While the importance of hydraulic fluid cannot be overstated, it is important to note that quality is of the essence. Ensuring the use of high-quality hydraulic fluids in hydraulic systems can help facilities prevent hydraulic pump failure, which is known to cause system-wide failure. The key to solving hydraulic fluid quality issues is not to make a decision based solely on price. Avoid trying to use low-quality hydraulic fluids, no matter how cheap they are, as they risk causing extensive system failure.
3. Overpressure:
Overpressure is a common topic of discussion among employees at various facilities. This occurs when the pressure exerted on the hydraulic pump exceeds its design capacity or specified pressure limit. Continuous exposure to overpressure will accelerate wear on the hydraulic pump, eventually leading to pump failure.
Understanding and addressing the three main causes of hydraulic oil contamination, using high-quality hydraulic oil, and overpressure is critical to preventing hydraulic pump failure and maintaining the overall health of your hydraulic system.
*How to repair hydraulic gear pump?
Repairing a hydraulic gear pump involves several steps to identify and resolve problems that may be affecting its performance. Here are general guidelines on how to repair a hydraulic gear pump:
1. Preliminary inspection:
Begin by visually inspecting the entire pump assembly. Check for any signs of leakage, damage or unusual wear.
Check the pump for unusual noises during operation, which may indicate a problem with the gears or bearings.
2. Disassembly:
Disconnect the pump from the hydraulic system.
Remove any connecting hoses or lines.
Carefully disassemble the pump following the manufacturer's instructions and documentation.
3. Component inspection:
Check gears, bearings and shafts for wear, damage or breakage.
Check the casing and casing for cracks or deformation.
Check seals and gaskets for signs of wear or leaks.
4. Cleaning:
Clean all components thoroughly using an appropriate cleaning solution.
Remove any debris or contaminants that may have accumulated inside the pump.
5. Replace worn parts:
Replace damaged or worn gears, bearings, seals and gaskets.
Make sure replacement parts meet manufacturer's specifications.
Pay special attention to the clearance between gears and other moving parts.
6. Reassembly:
Reassemble the pump, making sure all components are properly aligned and seated.
Follow the manufacturer's guidelines for torque specifications when reassembling.
7. Test:
Reconnect the pump to the hydraulic system.
Carry out a trial run to ensure that the pump runs smoothly and makes no abnormal noise.
Check the hydraulic system for signs of leaks.
8. Adjustment:
Make any necessary adjustments to the pump settings, such as pressure relief valve adjustments, per the manufacturer's specifications.
9. Fluid replacement:
Make sure the hydraulic oil is clean and at the correct level.
If the hydraulic oil is contaminated or deteriorated, replace it.
10. Precautions:
Implement preventive maintenance measures such as regular inspections and fluid analysis to identify potential problems before they cause pump failure.
NOTE: It is important to refer to the specific maintenance and repair instructions provided by the pump manufacturer. Additionally, if you have no experience servicing hydraulic systems, consider seeking help from a qualified technician or hydraulic system professional.
Finally, the risk of pump failure can be reduced by performing a thorough inspection, addressing worn parts, and following meticulous reassembly procedures. Regular preventive measures, including fluid analysis, contribute to the overall health of your hydraulic system. By paying attention to detail and precision during maintenance, hydraulic gear pumps can continue to maintain optimal performance, ensuring the reliability of hydraulic systems in a variety of applications.
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