Hänchen air filters are porous screw-in metal elements made of sintered bronze. They serve to ventilate unpressurized spaces, e.g. on oil containers or unpressurized chambers in hydraulic cylinders, in order to protect these against damage caused by foreign particles coming in with the airflow. Their distinguishing features are a high dirt separating capacity and a long service life, and they are particularly suitable for filtering flowing gases or air.
Filtration principle
Larger dirt particles in the air are caught on the surface of the filter element. Smaller particles get inside the bronze filter element and are removed from the airflow by getting caught in the mazelike interior. Beside a number of other parameters, the possible separating capacity depends mostly on the flow rate. Because of this, air filters should always be selected as large as possible. The pressure resistance of the air flow also depends on the flow rate.
Technical data
BSP thread type |
article no. |
Metric thread type |
article no. |
b | c | L | Wrench size |
Airflow rate in [l/min] at dp=0,25 bar |
G 1/8 | 0300700A | M10x1 | 0301300A | 8 | 14 | 18 | 17 | 50 |
G 1/4 | 0300800A | M12x1,5* | 0301400A | 10 | 19/17* | 18 | 22 | 100 |
G 3/8 | 0300900A | M18x1,5 | 0301500A | 12 | 23 | 20 | 24 | 130 |
G 1/2 | 0301000A | M22x1,5 | 0301600A | 14 | 26 | 23 | 27 | 160 |
G 3/4 | 0301100A | M27x2 | 0301700A | 16 | 32 | 25 | 32 | 220 |
G 1 | 0301200A | M33x2 | 0301800A | 18 | 39 | 30 | 41 | 400 |
Tmax=100°C
Installation
Hänchen air filters consist of a sintered bronze element inside a zinc-plated steel body. They can be installed by simply screwing them into threaded holes according to ISO 228 Part 1 and are equipped with sealing edges, so that no additional sealing elements are required.
Cleaning
Cleaning visible dirt on the surface of the filter element can be removed in a reverse air flow. If necessary, a soft brush can be used. Dirt inside the air filter, such as oil, can be removed using a solvent. For this, observe the solvent manufacturer's information on the product's effect on bronze CuSn10. After using a solvent, the air filter must be rinsed with a clear fluid and dried.