When it comes to magnetic rings, most of them are designed to fit circular shafts, so the holes in magnetic rings are mainly circular. However, there are also some D-shaped and flat shafts that require magnetic ring adaptation, which requires machining into an inner hole D-shaped structure. The biggest advantage of this magnetic ring is that it can reduce the sliding between the magnetic ring and the shaft, and the assembly is relatively convenient.
Different motors and equipment have different requirements for the size, material, magnetic properties, and number of magnetized poles of the D-axis magnetic ring. Karrych can customize according to the drawings or samples provided by customers, including outer diameter, inner diameter, height, D-hole size, and number of magnetic poles, all of which can be processed according to actual needs.
Magnetic ring with D-shaped inner hole

If you do not have formal drawings yet, you can provide product dimensions, usage scenarios, and technical requirements first, and NST can assist in confirming suitable magnetic materials and processing solutions. For customers who need to verify the effect first, D-axis magnetic ring sampling is also supported. After confirming the suitability of the sample, mass production can be arranged.
Our company has been producing multipole radial magnetic ring products for motors, sensors, encoders, and instruments for a long time, supporting multiple specifications and customized magnetic poles. Whether it's developing new projects or replacing magnetic rings with existing products, we can start with sampling to facilitate customer testing of magnetic force, assembly, and operational effectiveness.
Magnetic rings with D-shaped inner holes;
Small multipole ndfeb ring magnet with D shaped hole 8 poles
China Neodymium And Ferrite Magnets Manufacturer & Supplier