Hydraulic gear pump attention points

1. Maintaining clean hydraulic oil is essential for the proper functioning of a gear pump. It's advisable to install an oil filter with a filtration accuracy of 80–100 microns on the pump’s suction line to prevent large contaminants from entering. Additionally, a finer filter with a minimum accuracy of 25 microns should be placed on the return line. Regular cleaning and replacement of these filters are necessary based on the level of oil contamination.
2. If your gear pump is equipped with an oil filter, ensure that the filter’s effective flow rate exceeds twice the pump’s maximum suction flow. This helps maintain smooth operation and prevents clogging, which can lead to performance issues or damage.
3. Before starting the pump, it is crucial to fill it with oil and purge any air from the system. This ensures the pump can properly draw in oil when it starts. To do this, loosen a fitting on the pressure line and briefly engage the power source to allow oil to flow out until no air bubbles are visible. Then, tighten the fitting securely. This step is vital—skipping it can cause significant initial damage. After installation, run the pump for at least 10 minutes under no load and then short periods of light load to ensure everything operates smoothly.
4. The operating temperature of the gear pump should not exceed 80°C during continuous use, and should not go beyond 120°C even temporarily. Exceeding these temperatures can cause the seals to degrade prematurely, leading to leaks and reduced efficiency. Monitoring the temperature regularly and ensuring proper cooling can help extend the life of the pump.
5. In addition to the above, always follow the manufacturer’s guidelines for maintenance schedules and recommended oil types. Using the correct viscosity grade of hydraulic fluid is also important to avoid excessive wear and tear on internal components. Regular inspections of the pump and its connections can help detect early signs of wear, leakage, or misalignment, allowing for timely repairs and preventing costly downtime.
By following these best practices, you can significantly improve the reliability, efficiency, and lifespan of your hydraulic gear pump. Proper care and attention during installation and operation are key to ensuring long-term performance.