Black Epoxy Coating Bonded Arc Magnet for DC Planetary Gear Motor

Place of Origin: Zhejiang,China (Mainland)
Application: Industrial Magnet
Shape: Disc
Type: Permanent
Composite: NdFeB Magnet
Brand Name: HONY
Type: Bonded neodymium half ring magnet
Application: Moto Magnet
Working temperature: High up to 150℃
Coating: Grey Epoxy
Coating Thickness: 25-50
Shape: ring


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Product Description

Payment & Shipping Terms Supply Capacity
Payment Terms:L/C, D/P, D/A, T/TProduction Capacity:1000000/month
Min. Order:1000 Piece/PiecesPacking:carton
Means of Transport:Ocean, Air, LandDelivery Date:25

Black Epoxy Coating Bonded Arc Magnet for DC Planetary Gear Motor


Quick-quenched NdFeB magnetic powder with bonding agent.


BN-6 to BN-12


Compression molding magnets & Injection molding magnets


1. Black, grey Epoxy;

2. Prylene.


Thickness Magnetization, Radiation Magnetization, Multi-pole Magnetization


Br T: 0.55-0.80

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

Tw 0C: 110-150

Produts Tech:



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.



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,.

Black Epoxy Coating Bonded Arc Magnet for DC Planetary Gear Motor

Black Epoxy Coating Bonded Arc Magnet for DC Planetary Gear Motor

Magnet Information
DescriptionBonded NdFeB Magnet
Material: Quick-quenched NdFeB magnetic powder with bonding agent.
Shape: Ring, Thin-wall ring, Disc, 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)


max kJ/m3

mTKJ/M3 (Tw°C)
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

Black Epoxy Coating Bonded Arc Magnet for DC Planetary Gear Motor

Advantages Of Compression Bonded Magnets

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

1: Simulation calculation as to magnetic systems
2: Tool construction
3: Measuring of magnetic properties
4: Testing of the magnetic material
5: Customer support from an idea to post-marketing activities 

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) 

Category: Bonded arc ndfeb magnet

Related Category: Bonded ring ndfeb magnet 

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