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Radially Oriented Rings in Neodymium Iron Boron (sintered)

MCE offers radially oriented rings in Neodymium Iron Boron. The information below is provided to assist the customer in making decisions in regards to these rings.


For a particular size, a specific tool will be required. Generally a tool will cost approximately $10,000.00. For complex and/or challenging parts, the tooling cost may be higher.

Note that the tooling cost is the cost to make the ring. There will still be costs associated with a magnetizing fixture to magnetize the ring, but these costs are small, generally ranging from a few thousand dollars to about $10,000.00 depending on the complexity of the fixture. Since each customer has his or her own magnetizing configuration, the customer must pay the cost of the fixture.


The materials offered for the radially oriented Neodymium Iron Boron (sintered) rings range from N3067 to N4067. It is difficult to achieve a maximum energy product above 40 MGOe, hence higher energy products are not currently offered.

Any of the Neodymium Iron Boron (bonded) series may be used.

Surface Treatment

Similar to other configurations (blocks, discs and such), the sintered rings can be coated with IVD, nickel, or PR1010 coatings.

The bonded rings can be coated with epoxy or PR1010.


Since different customer requirements demand different magnetizing patterns, please note that fixtures to magnetize these rings will be required to obtain the magnetizing pattern that you need.


The first shipment requires us to make the tool prior to making the production parts. You should allow 12-16 weeks for the first shipment. Subsequent shipment will take 8-10 weeks after receipt of order. If surface treatment is required, please add one additional week.


Using a radially oriented ring for prototypes is not practical. It is better to have the prototypes made using arc segments. Once a qualified prototype is achieved, we can work towards making a tool for the ring.