Bonded NdFeB Magnet Ring for High speed dc motor

Bonded NdFeB Magnet Ring for High speed dc motor

1: Higher magnetic strength than injection molded magnet. 2: High corrosion resistance (Epoxy coating, parylene coating) and temperature resistance, the salt spray teasting >72 hours 3: Magnetizing with complex patterns (Multi-poles on OD, ID, end face (axial), radial, helical magnetization......) 4: Higher magnetic property (Br: 3500-8000G, BHmax: 3-12MGOe, Hcj: 4000-17000 Oe 5: Complicated shape

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Product Details

Bonded NdFeB Magnet Ring for High speed dc motor

Material:

Quick-quenched NdFeB magnetic powder with bonding agent.

Grade:

BN-6 to BN-12

Type:

Compression molding magnets & Injection molding magnets

Coating:

1. Black, grey Epoxy;

2. Prylene.

Magnetization:

Thickness Magnetization, Radiation Magnetization, Multi-pole Magnetization

Performance:

Br T: 0.55-0.80

(BH)max k J/M3 (MGOe): 44-92 (5.5-11.5)

Tw 0C: 110-150

Produts Tech:

Powder--Belending--Granulation--Compaction--Curing--Refining--Coating--Magnetization--Packing

Features:

1. High precision;

2. Excellent magnetic properties;

3. Stable working temperature;

4. Good corrosion-resistance and nice surface.

The complete combination of injecting process and high-property rare-earth powder makes it possible to form easily the anisotropic(especially radial anisotrotropic)super-thin ring or block magnets in complex shapes.The products can be formed in a unit together with other components.This process provides high precision and high acceptable rate of products.

 

Usages:

1. The compression molding magnets, as for simple mould and high magnetic properties, are widely used in stepping motor, CD-ROM spindle motor, general motor, vibrating motor, pick-up, HDD spindle motor, and FDD spindle motor.

2. The injection molding magnets, as for complex mould, magnetic properties around 6 to 7 MGOe, and highly consistency, are widely used in electric expansion valve, air-condition motor etc,.

Bonded NdFeB Magnet Ring for High speed dc motor

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Magnet Information
DescriptionBonded NdFeB Magnet
Material: Quick-quenched NdFeB magnetic powder with bonding agent.
Shape: Ring, Thin-wall ringDisc, Cylinder, Segment, Irregular shapes…With special shape requirement, we have own R & D dept. to support
Coating:Anti-Rust Oil, Spray Rolling, Black, Grey Epoxy, Special Soak
Magnetic Performance Sheet
GradeRemanence (Br)

Coercivity(BH)

max kJ/m3

 Temperature
mTKJ/M3 (Tw°C)
kGsMGOe
BNP-60.55-0.6244-56(5.5-7.0)100
BNP-8L0.60-0.6456-64(7.0-8.0)110
BNP-80.62-0.6964-72(8.0-9.0)120
BNP-8SR0.62-0.6664-72(8.0-10.5)150
BNP-8H0.61-0.6564-72(8.0-10.5)125
BNP-90.65-0.7070-76(8.8-9.5)120
BNP-100.62-0.6676-84(9.5-10.5)120
BNP-110.70-0.7480-88(10.0-11.0)120
BNP-11L0.70-0.7478-84(9.8-10.5)110
BN-120.74-0.8084-92(10.5-11.5)110
Magnet Coating
CoatingThickness  (Microns)ColorResistance 
Anti-Rust Oil1TrancparencyTemporary Protection
Spray Rolling10-50Common Black or other color24 hours of salt spray test
Epoxy25-50Grey, Black48 hours of salt spray test, 240 hours of constant temperature and humidity
Parylene10-50Trancparency200 hours of Salt Spray. Superior Against Solvents, Fungi and Bacteria


Our Measurement Capability


—The magnetic performance (magnetic flux, magnetic field strength, pole angle, magnetic declination and the magnetic property(Br,Hcj,Hcb,BH) of magnetic material are one of primary parameter for a magnetic rotors, so the professional and exact measure will be required during magnet design and manufacturing.

Measuring Tool
1.Gaussmeter,it's for magnetic strength measurement 
2.Fluxmeter,it's for magnetic flux measurement 
3.Multi-magnetic poles scanner,it's for magnetic strength and pole angle measurement 
4.Gaussmeter probes 
5.Helmholtz coil 
6.Magnetic declination tester 
7.Hysteresigraph tester,it's for magnetic material grade measurement(Br,Hcj,Hcb,BH) 


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