Neodymium Radial Diametrically Oriented Ring Magnet
Radially oriented neodymium iron boron (NdFeB) ring magnets are state-of-the-art ring magnets with diverse magnetization patterns in radial direction.
Order(MOQ):
100Payment:
100% / 70% INADVANCEProduct Origin:
ChinaShipping Port:
Xiamen/Shanghai/NingboColor:
BlackLead Time:
25-35 daysIn general, they provide high performance and cost-effective alternatives to arc/segment magnets. According to different production processes, radially oriented NdFeB ring magnets include sintered NdFeB ring magnets, bonded NdFeB ring magnets and hot-pressed NdFeB ring magnets.
Anisotropic magnets, which have a preferred magnetization direction, can also be radially magnetized in special patterns if proper radial orientation is applied during the pressing. This allows for skew magnetization to be achieved on a radial ring magnet, reducing cogging torque in motor applications. Both sintering and hot-pressing techniques can be used to achieve radial orientation.
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| Multi-pole radially ring magnet (Straight) | Multi-pole radially ring magnet (Skew) |
Single pole radially ring magnet |
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Dimension |
Size Range |
Tolerance |
Coaxiality |
Cylindricity |
| OD | 20-75MM | ±0.05mm | 0.1mm | 0.04mm |
| ID | 15-68MM | |||
| Thickness | 2-7MM | |||
| Height | 5-50MM | |||
| Grade |
N30-N48,N30M-N4M,N30H-N42H,N30SH-N40SH,N20UH-N38UH,N28EH-N35EH
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| Coating |
NiCuNi,Epoxy,etc.
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| Application |
Robotics and industrial automatic production line,etc.
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We have many molds, please see below, offer you some items for reference. Welcome to send us an inquiry, then we will match a close mold for your reference. Which can help you save more cost to develop a new mold on prototype stage.
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φ10.10-φ7-1.60 |
φ13-φ8-4 |
φ18-φ8-4 |
φ19.40-φ8-5 |
φ19-φ12-30 |
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φ19-φ10-30 |
φ23-φ21-3.30 |
φ24-φ8-20 |
φ25-φ23-7 |
φ29-φ20-25 |
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φ30-φ24-28 |
φ30-φ26-36 |
φ33-φ29-20 |
φ35-φ29-50 |
φ39-φ30-28 |
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φ40-φ32-75 |
φ44-φ39-30 |
φ49-φ40-30 |
φ52-φ40-5 |
φ54-φ48-40 |
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φ56-φ50-10 |
φ58-φ54-3 |
φ62-φ57-46 |
φ66-φ60-26 |
φ76-φ70-35 |
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φ87-φ81-27 |
φ8-φ3-W0.90-6 |
φ8-φ6.45-1.65 |
φ9.02-φ3.81-3.18 |
φ95.60-φ84.80-34.90 |
Features of Radially Oriented NdFeB Ring Magnets
1. High dimensional accuracy.
2. Optional magnetization patterns including single pole, straight multi-pole and skew multi-pole types.
3. A single ring magnet makes assembly and installation easy and low cost.
4. Simple and stable structure guarantees excellent dynamic balance performance.
5. Uniform magnetic properties and magnetization waves distribution contribute to low motor noise and smooth torque output.
Although radially oriented NdFeB ring magnets have the above advantages, they need a pressing mold and a magnetizing fixture for production including samples preparation. A set of these custom tools costs 1,000 to 7,000 USD depending on custom magnet’s specifications, so the cost of product development is relatively high in the early stage.
1. Servo motors,
2. Spindle motors,
3. Magnetic couplings,
4. Electrical power steering motors
5. DC motors, etc.
Radially oriented neodymium iron boron (NdFeB) ring magnets are state-of-the-art ring magnets with diverse magnetization patterns in radial direction.
Radial ring permanent magnets, very popular in servo motors, brushless motors, stepper motors, automotive motors, and robot drive motor applications.
These are multipole bonded neodymium ring magnet, with black epoxy coating.
These are multipole bonded neodymium ring magnet, with black epoxy coating.
Common permanent magnets with multi poles magnetizations are 4 poles, 6 poles, 8 poles or more which depend on the dimensions and the application of the magnets.
These are multipole bonded neodymium ring magnet, with black epoxy coating.
Unlike gold, zinc and nickel, an epoxy magnet coating acts as an excellent barrier to salt, ambient air, water or moisture. But it's slightly more expensive than the first three alternatives. Although it is easy to scratch, with a thickness of 15-30 um, it has good adhesion to steel with magnetic glue. Epoxy coatings are mainly used in the Marine, motor, sensor, automotive and consumer goods industries.
As we all know, pot magnet is a magnet assembly that inserts a powerful sintered Ndfeb magnet into a durable steel housing or groove
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