Air filter BFSK
cartridgefine filtrationfor hydraulic applications

air filter
air filter
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Designed for
Filtration element
fine filtration, for hydraulic applications
Other characteristics
pleated, high-efficiency, with drainage and venting conncection
Operating pressure

1 bar (14.504 psi)


• - Size 25 … 125 • - Component series 2X • - Max. operating pressure 1 bar • - Connection G 3/8 to G 1 1/4 BSP; (ISO 228) with adapter plate: Ø58 x 2.5 (DIN 24557) • - Operating temperature 0 … +85 °C Features • - Highly efficient, special filter material • - Filtration of very fine particles and high dirt holding capacity • - Adsorption of air humidity • - Minimizes the risk of corrosion in the hydraulic tank • - Filter cartridge as well as water-absorbing granules exchangeable • - Optional check valves to avoid air exchange at no-load operation • - Optional adapter plate including check valve for discharge air from tank, without filtration • - Combines air filtration and dehumidification in fluid systems Product description In hydraulics, air exchange at the fluid tank must be ensured at all times. Depending on the machine cycles, air is sucked into the tank and pressed out again. The air contains miniature particles as well as water steam. Due to temperature variations, the exchanged air condenses and stimulates the oxidation process of the oil. This leads to corrosion resulting in damage to the fluid tank. By means of the Rexroth BFSK breathing and air bleed filter, the fluid tank can suck in and give off clean and dry air. It is intended to be directly attached to a tank. The BFSK breathing and air bleed filters basically consist of an unscrewable replacement cartridge (1) with an integrated, pleated filter element (2) and an air filter housing (3). The air filter housing (3) is filled with water-absorbing granules (WA granules) (4). Optionally, check valves (5) can be integrated.


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