SINTERED NEO RADIAL RING
TRADITIONAL METHOD
Traditionally, multi-pole ring magnets were created using multiple arc magnets glued to the assembly. While spinning, it was not uncommon for the adhesive material loosen and the magnet would dislodge itself. Also, the requirements for exact accuracy between all of the magnets in the ring shape to have the exact same physical and magnetic properties – thus many magnets would fail because of the high requirements. But because of the technological limitations, for years there was no good solution.
MODERN METHOD
Now there is a better way to create circular magnets. By creating just one single magnet specifically designed for your application, we are able to provide your company a product that is stronger, more reliable, and more efficient. The magnets are multi-pole – which does not compromise the magnetic properties. Contact your MPCO Magnet sales representative to learn more about how this technology may help your company today!

SINTERED NEO RADIAL RING
APPLICATION
Stepper motors
Actuators
Magnetic bearings
Steering control motors
Magnetic clutch
Peripheral motors
Spindle motors
ADVANTAGES
Geometric precision
Variety of magnetic configuration
Homogeneous distribution of magnetic field
Design and assembly simplification
Precision of motor performances
Cost efficiency
Huge marketing potential
MAGNETIC FORCE
Regular Magnet
Radial Orientation
MAGNETIC ORIENTATION
Multiple Poles
Skewed Magnetization
Single Pole
RADIAL RING GRADES
Grade | Remance Br(Gs) |
Intrinsic Coercivity Hcj(Oe) |
Coercivity Hcb(Oe) |
Max Energy Product (BH)max |
Operating Temp. °C |
N35R | ≥11500 | ≥12000 | ≥9500 | 31-37(MGOe) | 80 |
N38R | ≥11800 | ≥12000 | ≥9600 | 32-40(MGOe) | 80 |
N42R | ≥12000 | ≥12000 | ≥9700 | 34-42(MGOe) | 80 |
N35MR | ≥11500 | ≥13000 | ≥9500 | 31-37(MGOe) | 100 |
N38MR | ≥11800 | ≥13000 | ≥9600 | 32-40(MGOe) | 100 |
N42MR | ≥12000 | ≥13000 | ≥9700 | 34-42(MGOe) | 100 |
N35HR | ≥11500 | ≥14000 | ≥9600 | 31-37(MGOe) | 120 |
N38HR | ≥11800 | ≥14000 | ≥9700 | 32-40(MGOe) | 120 |
N42HR | ≥12000 | ≥14000 | ≥9800 | 34-42(MGOe) | 120 |
N35SHR | ≥11500 | ≥16000 | ≥9700 | 31-37(MGOe) | 150 |
N38SHR | ≥11800 | ≥16000 | ≥9800 | 32-40(MGOe) | 150 |
N42SHR | ≥12000 | ≥16000 | ≥10000 | 34-42(MGOe) | 150 |
N35UHR | ≥11500 | ≥19000 | ≥9800 | 31-37(MGOe) | 180 |
N38UHR | ≥11800 | ≥19000 | ≥10000 | 32-40(MGOe) | 180 |
RECOMMENDED DIMENSIONS
Diameter: 20–45 mm
Height: < 30 mm