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Sintered NdFeB Ring Radial Magnet

/Sintered NdFeB Ring Radial Magnet
  • Sintered NdFeB Ring Radial Magnet

Sintered NdFeB Ring Radial Magnet, Multipole Radial Ring NdFeB Magnets, Neodymium Radial Oriented Ring Magnet, Anisotropic bonded ring magnet, Radially Magnetized Sintered NdFeB NIB Ring Permanent Magnet

The grade of Sintered NdFeB Ring Radial Magnet we can offer:

Grade

Br (kGs)

Hcb (kOe)

Hcj (kOe)

(BH)max (MGOe)

N35R

11.8-12.9

≥9.5

≥12.0

31-37

N38R

12.0-13.2

≥9.6

≥12.0

32-40

N42R

12.2-13.5

≥9.7

≥12.0

34-42

N35MR

11.8-12.9

≥9.5

≥13.0

31-37

N38MR

12.0-13.2

≥9.6

≥13.0

32-40

N42MR

12.2-13.5

≥9.7

≥13.0

34-42

N35HR

11.8-12.9

≥9.6

≥14.0

31-37

N38HR

12.0-13.2

≥9.7

≥14.0

32-40

N40HR

12.1-13.3

≥9.7

≥14.0

33-41

N42HR

12.2-13.5

≥9.8

≥14.0

34-42

N45HR

12.5-13.9

≥9.9

≥14.0

36-45

N35SHR

11.8-12.9

≥9.7

≥16.0

31-37

N38SHR

12.0-13.2

≥9.8

≥16.0

32-40

N40SHR

12.1-13.3

≥9.8

≥16.0

33-41

N42SHR

12.2-13.5

≥10.0

≥16.0

34-42

N35UHR

11.8-12.9

≥9.8

≥19.0

31-37

N38UHR

12.0-13.2

≥10.0

≥19.0

32-40

The application of NdFeB Ring Radial Magnet

1. Actuators
2. Magnetic bearings
3. Magnetic clutch
4. Peripheral motors
5. Spindle motors
6. Steering control motors
7. Stepper motors

The advantage of Radial NdFeB Ring Magnet

1. Motor assembly is made much easier. Installation of one or more rings versus gluing arcs into place.
2. Radial sintering assures no “weak spots”.
3. Magnets are multi-poled–thus the ring does not compromise the magnetic properties.
4. The radial orientation results in a super strong magnet by virtue of superior metallurgy developed specifically to BE radially oriented.

The difference between diametrical magnetized and radially magnetized

Neodymium magnets
Neodymium magnets (also known as rare earth, Neo, NIB or NdFeB magnets) were invented in 1982 and are the strongest type of magnets.
There are two basic ways that NIB magnets are made: sintered and bonded.

Sintered NIB Magnets
Sintered NIB magnets have the highest strength but are limited to relatively simple geometries and can be brittle. They are made by pressure forming the raw materials into blocks, which then go through a complex heating process. The block is then cut to shape and coated to prevent corrosion. Sintered magnets are typically anisotropic, which means they have a preference for the direction of their magnetic field. Magnetizing a magnet against the “grain” will reduce the strength of the magnet by up to 50%. Commercially available magnets are always magnetized in the preferred direction of magnetization. Radial Oriented NdFeB Ring Magnet

Bonded NIB Magnets
Bonded NIB magnets are typically about half as strong as sintered magnets but are less expensive and can be made into almost any size and shape. Raw materials are mixed with epoxy as a binder, pressed into a die cavity and heat cured. Bonded magnets are isotropic, which means they don’t have a “grain” or a natural preference for the direction of their magnetic field.

Demagnetization
NIB magnets really are permanent magnets, as they lose their magnetism, or degauss naturally, at approximately 1% per century. They generally operate within the temperature range of -215°F to 176°F (-138°C to 80°C). For applications that require a broader temperature range, Samarium Cobalt (SmCo) magnets are used.

Coatings
Because uncoated sintered NIB will corrode and crumble with exposure to the atmosphere, they are sold with a protective coating. The most common coating is made of nickel, though other commercially available coatings provide resistance to high temperature, high humidity, salt spray, solvents and gases.

Grade
NIB magnets come in different grades, which correspond to the strength of their magnetic fields, ranging from N35 (weakest and least expensive) to N52 (strongest, most expensive and more brittle). An N52 magnet is approximately 50% stronger than an N35 magnet (52/35 = 1.49). In the US, it is typical to find consumer grade magnets in the N40 to N42 range. In volume production, N35 is often used if size and weight are not a major consideration as it is less expensive. If size and weight are critical factors, higher grades are typically used. There is a premium on the price of the highest grade magnets so it is more common to see N48 and N50 magnets used in production versus N52.

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  • Customized is Available
  • Affordable price
  • Quality guaranteed
  • T/T or L/C accepted
  • Other payment accepted
  • Fast shipping, Worldwide delivery
  • 24-Hours excellent customer service
  • Offer free magnetic solution
  • Bulk discounts for larger orders

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