BONDED MAGNETS
Dura Magnetics offers industry-leading magnet design and engineering. Our magnet experts are here to help you learn more about our magnet assembly types and will help you decide whether they’re the right fit for your application. We also provide design and engineering support for customized solutions!
Explore Our Bonded Magnet Capabilities
Bonded magnets can be formed by either Injection Molding or Compression Bonded. Neodymium is the most popular material to use but these can also be produced using Samarium Cobalt and Strontium Ferrite and combined with a rubber binder to form the finished part. Injection molding lends itself to be used in either higher volume or more complex parts. Compression bonded is used frequently by customers wanting to machine their own parts or lower volume runs reducing the need for custom tooling. This material lends itself to easily be machined using standard machining practices. Keep in mind this type of material has a maximum operating temperature around 165°C – 180°C. Much lower than its fully sintered counterpart. Contact one of our sales engineers today for your bonded magnet requirements, we can assist you with your design and fabrication.
Injection Molded Neodymium
- Binder Types / Nylon / PPS / Polyamide
- Temperature Range -40°C – 180°C
- Very tight tolerances off tool
(0.002 -0.003 Typical ) - Very good mechanical strength
- Available in energy products from 5 – 14 MGOe
Compression Bonded Neodymium
- Higher magnetic strength due to higher magnetic particle density
- Epoxy binder / resistant to normal industrial solvents and automotive fluids
- Epoxy coat after manufacturing to prevent oxidation
- Temperature Range -40°C – 165°C
- Available in energy products from 2.5 – 13 MGOe
Bonded Magnet Applications:
- Sensors
- Brushless DC Motors
Bonded Magnet Characteristics:
- Materials are isotropic and can be magnetized
in any direction - Wide range of existing tool sizes are available
in rings, discs and rectangles. - Existing Multipole magnetizing fixtures for quick prototyping
- Easily machined
- Existing Multipole rings simplify assembly verse arc sepments
Other Magnet Types to Consider:
Neodymium Magnets
Neodymium is the strongest available rare earth magnet alloy at up to 55MGOe and temperatures up to 230°C/446°F.
Samarium Cobalt Magnets
Samarium Cobalt magnets are available in grades 16 to 35 MGOe with operating temperatures up to 350°C/662°F.
DFARS & ITAR Compliance
Limited availability of Defense Federal Acquisition Regulation Supplement (DFARS) compliant material can make small magnet production runs costly. However, we stock various grades at our U.S. facility, enabling us to provide cost-effective, DFARS-compliant magnets for all customers if needed, regardless of project size or requirements.
We are also registered and compliant with the International Traffic in Arms Regulations (ITAR). This qualifies us to work with items listed on the United States Munitions List (USML). We are also ITAR registered with the Directorate of Defense Trade Controls (DDTC).