Replace 937399Q series filter element

The replacement 937399Q series filter element is a high-performance filter element designed specifically for high-pressure hydraulic return systems, fully compatible with the size and installation interface of the original 937399Q, and can be directly replaced for use. The product uses a stainless steel perforated mesh tube as the core filter medium, paired with a horseshoe shaped engineering plastic end cap, which has excellent pressure resistance, filtration accuracy, and durability. The filtration accuracy covers multiple levels from 1 μ m to 25 μ m, with a rated working pressure of up to 35MPa and a working temperature range of -20 ℃ to+120 ℃. It complies with international standards such as ISO 2941 (fracture resistance), ISO 2942 (structural integrity), and ISO 3724 (fatigue characteristics), and widely meets the stringent requirements of servo valve systems, high-pressure hydraulic circuits, and other high cleanliness oils.

Replacing the 937399Q series filter cartridge, it adopts an integrated structure of "end cap+mesh tube", with a black engineering plastic horseshoe shaped end cap at the top and an integrated handle design for easy installation and disassembly; A reliable seal is achieved between the end cap and the mesh tube through a fluororubber O-ring, ensuring no oil leakage. The core filter element is a rolled stainless steel perforated mesh tube with uniform mesh holes and high strength, which can effectively intercept solid particles, gel like impurities, and metal debris in the oil. The oil flow direction is "in and out": it enters the filter element from the servo valve or hydraulic system return port, filters through the mesh cylinder, and flows out from the center hole of the end cap back to the oil tank. The mesh tube is made of 304 stainless steel, which is resistant to oil corrosion, high pressure, and has a long service life; The end cover handle adopts anti slip design to avoid slipping during installation and improve operational safety.

The 937399Q series filter cartridge is mainly used in servo valve control systems (such as hydraulic servo circuits in injection molding machines, machine tools, and construction machinery) to filter impurities in the return oil of servo valves, protect the valve core from wear, and ensure system control accuracy; High pressure hydraulic circuits (such as the high-pressure oil circuit of metallurgical rolling mills and power turbines) can withstand pressures above 35MPa, filter metal particles in the oil, and prevent damage to high-pressure components; Precision hydraulic equipment (such as semiconductor manufacturing equipment and hydraulic systems for precision measuring instruments) requires oil cleanliness to reach NAS 1638 level 7 or below, effectively intercepting small particles and ensuring stable operation of the equipment.

1. Complete compatibility: The size and interface are exactly the same as 937399Q, and installation does not require modification of pipelines or adjustment of parameters, making replacement convenient and reducing maintenance costs.

2. High strength and pressure resistance: The stainless steel mesh tube can withstand pressure of over 35MPa, far exceeding the 21MPa standard of conventional filter cartridges, meeting the stringent requirements of high-pressure circuits.

3. High filtration accuracy: Multiple levels ranging from 1 μ m to 25 μ m can be selected, customized according to system cleanliness requirements, effectively intercepting "lethal particles" (such as particles above 5 μ m) from precision components such as servo valves.

4. Durable and corrosion-resistant: The 304 stainless steel mesh tube is resistant to oil corrosion, with a service life of up to 1500-2000 hours (depending on the cleanliness of the oil), reducing the frequency of replacement.

5. High cost-effectiveness: Using materials and processes of the same quality as the original, the cost is only 60% -70% of the original, and the performance is equivalent, making it an ideal alternative to the original filter element.

1. Oil leakage after installation: The main reasons are the aging of the O-ring or the failure to tighten the end cap during installation. Solution: Check for cracks or deformation in the O-ring and replace it with a new fluororubber O-ring; Ensure even force distribution between the end cap and the mesh tube during installation to avoid tilting.

2. Excessive pressure difference: The reason is that the filter element is clogged, which increases the resistance to oil flow. Solution: Regularly check the pressure difference of the filter element (recommended to check every 500 hours), and replace the filter element in a timely manner when the pressure difference exceeds 0.5MPa; If there are too many impurities in the oil, the replacement cycle can be shortened.

3. Damaged end cap handle: The reason is that frequent installation and disassembly caused the handle to break. Solution: Replace the end cap component with a new one, and use reinforced engineering plastic for the handle, which has strong impact resistance and avoids further damage.

4. Decreased filtration effect: The reason is that the filter element has exceeded its service life and the mesh is blocked by impurities. Solution: Based on the cleanliness of the oil (such as NAS grade) and usage time, develop a replacement plan (recommended to replace every 1000-2000 hours) to ensure that the oil cleanliness meets the system requirements.