Donaldson Filtration: Expert Guide to Replacing Hydraulic Filters
Whether you’re replacing filters for routine upkeep or to solve performance issues, it’s crucial to know the different types, their functions, and why quality matters in hydraulic filters systems.
Expert Guide to Replacing Hydraulic Filters
Hydraulic filters are vital to the performance of agricultural and construction machinery, relying on hydraulic filters to remove contaminants and safeguard expensive equipment. With various filters along the hydraulic oil’s journey, understanding the role of each is essential for effective maintenance.
Whether you’re replacing filters for routine upkeep or to solve performance issues, it’s crucial to know the different types, their functions, and why quality matters in the hydraulic system.
Types of Hydraulic Filters in Hydraulic Systems
Hydraulic filters come in several types, each designed for different locations within the system and varying pressure levels. Here are the most common:
Low-Pressure Hydraulic Filters
Typically found in return lines to the hydraulic tank or between the tank and pump, low-pressure filters handle up to 20 bar (350 psi). These filters prevent contaminants from re-entering the system.
Medium-Pressure Hydraulic Filters
Often used in-line as spin-on filters or cartridge solutions, medium-pressure filters handle pressure ranges of 20-135 bar (290-2000 psi), offering flexible protection for moderate-pressure systems.
High-Pressure Hydraulic Filters
Positioned between the pump and critical components like motors and valves, high-pressure filters protect these components by handling pressure levels from 130 bar (1885 psi) up to 450 bar (6527 psi).
In-Tank Filters
These are low-pressure filters positioned in the tank to filter return and suction lines. In-tank filters are compact, efficient, and ideal for space-constrained systems.
Breathers
Designed to prevent airborne and moisture contamination, breathers maintain clean airflow in and out of tanks and reservoirs, ensuring long-term system health.
Why Pressure Ratings and Filtration Efficiency Matter
When replacing hydraulic filters, understanding pressure ratings and filtration efficiency is crucial. Filters are designed to handle specific pressure levels based on their location within the hydraulic circuit. For instance, a low-pressure filter is positioned between the tank and pump, while a high-pressure filter is placed after the pump to protect key components.
However, efficiency is equally important. Highly efficient filters allow fewer particles through but can also restrict oil flow. On the other hand, lower-efficiency filters allow more contaminants but keep oil moving freely. Striking the right balance between pressure handling and filtration efficiency is key to maintaining system performance and preventing costly damage.
Choosing the Right Hydraulic Systems
Selecting the right replacement hydraulic filter involves more than just matching pressure ratings. You also need to consider the filter’s bypass function, which allows unfiltered oil to flow if the filter becomes clogged. This prevents system damage from pressure build-up or restricted flow.
Make sure to replace filters like-for-like: If the old filter’s bypass is in the element, the new filter must match. Failing to do so could lead to inadequate protection and costly repairs.
Top Tips for Trouble-Free Filter Replacement
Stick to Manufacturer’s Guidelines:
Follow the equipment manufacturer’s recommendations for maintenance intervals and filter replacement, typically measured in working hours.
Match Pressure and Efficiency Ratings:
Refer to your machine’s manual for the correct pressure and efficiency values, ensuring optimal performance.
Invest in Quality Filters:
Avoid cheap filters. Choose high-quality filters from reputable brands like Donaldson for reliable performance, longevity, and reduced risk of downtime.
Consult the Experts:
If you’re unsure about which filter to choose, contact John Ratcliffe a certified dealer of Donaldson Filtration Solutions for professional guidance to ensure you protect your equipment effectively.
Conclusion: Optimize Your Hydraulic Filter System with the Right Filters
Proper hydraulic filter maintenance is essential for keeping your machinery running smoothly and preventing unnecessary wear and tear. By understanding the types of filters available, balancing pressure and efficiency, and choosing quality replacements, you can maximize the lifespan of your equipment and avoid unexpected downtime.
For expert advice or help choosing the right Donaldson filters for your system, get in touch with our team at John Ratcliffe.
Contact us today for more on our Donaldson filtration solutions.
The above article has been adapted from article by Donaldson Filtration Solutions.
