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Axial NdFeB Block Sensor Magnet N35H 4x2x1mm, Small Powerful Block Axial Magnet for linear position sensor, Customized Sensor Rectangular Magnets
Block Sensor Magnet Part No.: HSND-B0421-35H
Magnetisation Grade: N35H
Material: Sintered Neodymium-Iron-Boron (Rare Earth NdFeB)
Plating / Coating: Nickel (Ni-Cu-Ni)
Magnet Shape: Block / Rectangle / Rectangular
Magnet Size: LxWxH = 4 mm x 2 mm x 1 mm
Magnetisation Direction: Axial
Residual Magnetic Flux Density (Br): 1170-1220 mT (11.7-12.2 kGs)
Energy Density (BH)max: 263-287 KJ/m³ (33-36 MGOe)
Coercivity Force (Hcb): ≥ 868 kA/m ( ≥ 10.9 kOe)
Intrinsic Coercivity Force (Hcj): ≥ 1353 kA/m ( ≥ 17 kOe)
Maximum Operation Temperature: 120 °C
Tolerance: ±0.05 mm
The Block sensor magnet is an axial magnet used with the linear encoder, in order to measure small linear displacements.
The magnet is mounted on the top of the sensor. The airgap depends on the desired resolution and displacement range for the end application.
Material: NdFeB sintered magnet, Ni-coated
Neo magnets are typically produced via a powder metallurgy process wherein the alloy composition is melted from raw materials, crushed into a coarse powder, finely milled, compaction pressed, sintered and finish processed.
HSMAG offer and manufacture licensed neodymium iron boron. Our neo magnets are RoHS compliant.
The development of rare earth magnets like Neodymium has given life to a great future for companies that dominate the automobile industry like Toyota. According to their latest news, the Toyota Prius Hybrid car contains about 30 kilograms of rare earth materials. Neodymium magnets have acquired a large percentage of it. The motors that contain Neodymium magnets deliver a high performance when compared to a traditional motor of the same size. Therefore, they are also used in wind turbines as well as generators, where long term efficiency is essential.
Below in Figure 1, an illustration of the magnet and the sensor is shown. The curve plot below the sensor chip shows the ideal linear range of the magnet seen by the other sensor. Additionally, a magnet scan of this arrangement can be found in Figure 2 for further reference.