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Proper filtration will maximize your machine tool’s potential and optimize your overall production process. The right filter not only boosts efficiency, but also safeguards equipment from potential damage caused by tiny particles and contaminants during the manufacturing process. To ensure your machine runs smoothly, you must select the right filter, stay on top of maintenance requirements, and know exactly when to replace the filter. 

 In this blog, we will explore types of filters and media used in the machine tool industry and tips for keeping them in peak condition. Filters on the machine tool effectively filter different fluids, such as oil, water, coolant, and more. You will find these filters in various locations, such as the suction side lines, pressure or discharge side lines, or return line.

When it comes to filtration, there are two ways to measure: micron ranges (typically from 3 to 50) or mesh count per square inch (ranging from 60 to 300). The finer the filter, the lower the micron value. Conversely, the finer the filter, the higher the mesh count. Specific filters are like specialized tools as they are designed with specific applications in mind. It is essential to note this distinction and choose the right filter for the job.

Now, let's explore the most common filters.


Suction strainers are a critical component of a hydraulic system. Typically located at the pump inlet, they protect pumps from contamination while providing additional flow diffusion in the suction line. 

If you have hydraulic systems or hydraulic power units, chances are there is a suction strainer in them. It is worth checking their condition if you are experiencing lack of pressure, or if your pump suddenly stops working. If your mesh filters are dirty, cleaning them is a viable option. But if they cannot be salvaged, you can easily replace them. 

To determine the value or rating of the suction strainer, simply locate an indication on the filter's end or any stamped area of the unit. One frequently encountered rating is 150W or 150 mesh, which does well at handling viscosities ranging from 32 to 68 weight oil. By maintaining your hydraulic power system in prime condition, you ensure optimal performance and extend its overall lifespan.


Canister filters, commonly used in the automotive and other industries, play a vital role in engine maintenance. By effectively removing small particles from the engine oil, these spin-on oil filters help extend the engine's lifespan and reduce maintenance and operating costs.

Unlike high-pressure filters, canister filters are typically employed in return lines or filtration loops to achieve maximum pressure ratings between 200 to 250 psi. Their efficiency is measured in microns, and many models feature indicators on the filter head to alert users of clogging or loss of flow.

One popular type of canister filter is the 10-micron screw-on filter. In normal operational conditions, it is recommended to replace them every 6-12 months.


Cartridge filters with wire mesh not only offer superior strength and durability compared to other media, but they also provide the convenience of easy cleaning and replacement. Typically housed on the high-pressure side, particularly the output side of a pump, cartridge filters are capable of handling pressures ranging from 1,000 to 3,000 psi, depending on their composition and overall condition.

Whenever you replace or remove these filters and you are unsure of their rating, you can verify by checking for a stamp that indicates the filter value at the filter’s end. A frequently encountered rating is 10U, which signifies a 10-micron filter.


Commonly used in low-pressure systems, cartridge filters vary in filtration media, including cellulose or paper, and wire mesh or stainless-steel wire mesh. The material and media selection depend on the type of fluid filtered, with some options providing longer lifespans and enhanced durability for specific fluid types. To find essential information about these filters, refer to the body of the filter or filter housing specific to the cartridge filter. 


Inline high-pressure filters are frequently utilized in hydraulic systems. These filters are designed to endure the system's maximum pressure, while their size is customized to match the system's flow rate. Their primary function is to shield delicate downstream components from potential harm. 

The filters consist of a filter head, which has an inlet and outlet side indicated by arrows to show the flow of fluid. If you need to change the filter element, you will usually find a screw or nut at the base to remove the bottom canister and get to the element. Once you have taken out the element, you might notice a marking that shows the replacement part number, size, or value. Keep in mind, there may be different filters that work with this cartridge.

Moreover, these units often feature an indicator at the top that measures the differential pressure between the inlet and outlet. This indicator helps you determine when it is time to replace the filter. Visual indicators may change from green to red, while electronic indicators will sound an alarm.


When it comes to filters, there are a wide variety of types and sizes used in different applications. If you are having trouble identifying or locating a specific filter, don't worry. The knowledgeable team at All World Machinery is here to help you find the exact filter you need and offer guidance on replacement. Thanks to our extensive inventory, you can easily find the perfect filter for your machine tool at an affordable price and with same-day shipping. Reach out to our customer service team, and let us help you with all your filter-related needs.


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