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The power supply mode of the micro DC motor is direct current, so it can be powered by a battery. The use of permanent magnets in the micro motor is to prolong the battery life, save the excitation coil, and reduce the volume. Today, we will introduce the type of permanent magnet used.
Now, most micro motor manufacturers use neodymium magnets, and a few motor manufacturers also use samarium cobalt magnets and ordinary ferrite magnets. The shapes are mainly ring-shaped and arc-shaped. The following is an introduction to the use of magnets for micro motors.
For permanent magnet ferrite, because of its good high temperature resistance (250 ° C) and low price, it is necessary to consider whether the magnetic field strength can meet the requirements.
The NdFeB strong magnet has a temperature resistance of about 200 °C, which fully meets the working temperature requirements of the micro motor. Its price is cheaper than samarium cobalt, and the price is in the middle.
The above is the introduction of magnets used in micro motors. Our company can provide various multi-pole neodymium magnets, neodymium arc magnets, and injection-molded ferrite magnets. You are welcome to provide drawings to inquire about prices and samples.
Related micro-motor magnet samples;
This product is round ferrite magnet with a diameter of 9mm and a thickness of 3mm, the performance class is Y30, magnetized in the thickness direction, without electroplating protective layer, the magnetic force is usually 700-1000gs, the working temperature is -40°C to +250°C, Suitable for sensors, suction parts, electrical appliances, Hall induction....
This is a very small size rectangular block magnet with galvanized surface, 3mm length, 1.5mm width and height, with very fine tolerance, magnetized by lengthwise direction, mainly used in precision electronics, instrumentation, please contact us if you need to buy....
Flat magnets can be flat square magnets or round magnets. Today's sample is a flat rectangular magnet, with a length of 20mm, a width of 10mm, a thickness of 1.5mm, and a zinc coating on the surface. Thickness magnetization is used for thin workpieces. The use of this relatively flat neodymium rectangular magnet requires special attention....
Looking for suppliers of radial 16 pole ring magnet and multi-level magnetic ring, welcome to contact carrich magnet manufacturers in China. We have more than 10 years of experience in the motor magnet industry. Our products have many specifications and good performance, which are highly praised by customers at home and abroad. We welcome to provide specifications, samples and batch prices....
This is a dedicated to screwdrivers, drills on top of the ring magnet, the material is rare earth neodymium, N38 grade, outer diameter 15mm, height 10mm. hole diameter 7mm, the use of very simple, is to set the magnetic ring in the screwdriver (screwdriver head) on top of the purchase of the hole is recommended to be larger 1mm....
Product name: 9.5mm diameter thickness 1.5mm neodymium intense magnetic，Type of magnet: permanent magnet，Magnet shape: Round，Magnet class: n45，Tolerance: ±0.05，Coating: conventional nickel copper nickel，Pull: About 1.6 pounds，Magnetic strength: about 2200 Gauss....
This is a C8 grade ceramic ferrite block rectangle, with white marks made according to the customer's requirements. The magnet size is 13mm long, 11mm wide and 10mm thick. If you are interested in such a magnet, you can contact us to provide you with samples, prices,...
This is a 6-pole ring magnet made of injection molded ferrite, with an outer diameter of 9.5mm, an inner hole of 1mm, a thickness of 2mm, single-sided 6-pole magnetization, 3 N poles and 3 S poles. It is mainly used for Hall encoder....