This product is a special magnet for the telescopic door, the material is hard sintered ferrite, telescopic door buried in the ground magnet, do navigation limit use also D21x21mm, D22*22mm, D18x20mm, 18*19mm and other ferrite specifications can be selected.
What is the function of telescopic door cylinder magnet?
The main function of the trackless automatic telescopic door magnet is to sense the position, ensuring that the door will not deviate or automatically reverse after walking for a certain distance during operation. When the magnet is sensed under the closing limit rod, the door will stop.
On the surface treatment of ferrite magnet: chamfer, S pole mark, concave point, marking, N pole white paint.
Ferrite magnet is a sintered permanent magnet material, which is composed of barium and strontium iron. In addition to strong demagnetization resistance, this kind of magnet has the advantage of low cost. Ferrite magnet is hard and brittle, which needs special machining technology. Heterotropic magnets, because they are oriented in the direction of manufacture, must be magnetized in the direction taken, while homogenous magnets, because they are not oriented, may be magnetized in any direction, although a slightly stronger magnetic induction is often found on the smallest side of the compression plane. The magnetic energy product ranges from 1.1MGOe to 4.0MGOe.