12 pole neodymium magnets

Radial internally magnetized 12 pole motor neodymium magnetic ring

The magnet is a multipolar Ndfeb magnetic ring, the material is bonded neodymium magnets, there are 12 magnetic poles, using the radial inner diameter magnetization, the use of surface for the inner side, the outer diameter of the ring magnet is 28mm, the inner diameter of 24mm, the height of 10mm, the surface black electrophoresis, the measured surface magnetic field intensity of about 2680 Gauss...