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Ring Ferrite Magnet Y30BH Y35 Ceramic Rings Magnet

1. Material: Ring Ferrite / Ceramic Magnet

2. Shape: Ring

3. Dimensions: As required / Customized

4. Grade: Y30BH-1,Y35,Y40 and etc

Click here to check the grade of ferrite magnet

5. Coating: Without coating

6. Magnetized: Axial,Diametrical,Multi-poles on OD or ID

7. Max working Temp.: Up to 250℃

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  • Technical Specifications

Ferrite magnet,or also known as Ceramic magnet.Ferrite magnets are corrosion resistant,they can be used in water with no corrosion at all.Although not as powerful as rare earth neodymium magnet (NdFeB magnet),their high coercivity and relative low cost make them ideal for use in motors and high temperature motors.  

Application of Ferrite (Ceramic) Magnets

1.Automobile industry
2.Motors and Generators
3.Water pump rotor
4.Instrument motor
5.Sensor
6.Medical equipment
7.Loudspeakers
8.Automation equipment and etc.

Advantages of Ferrite (Ceramic) Magnets
1. Do not corrode in water.
2. Can be used up to +250℃.
3. High coercivity (Hcj) that increases as magnet heats up.
4. Electrically insulating.
5. Relatively low cost - good for cost saving projects.

Disadvantages of Ferrite (Ceramic) Magnets
1. The magnetic power are weaker than neodymium magnet.
2. Sometimes there will be mould and magnetized fixture development cost.

Magnetization Orientation of  Ring Ferrite Magnet

Aaxial magnetized and diametrical magnetized are the most commonly used magnetization methods for ring ferrite magnet. It can can be magnetized multi-poles on OD or ID.



Axial Magnetized Diametrical Magnetized


Magnetic Properties Of Ferrite Magnet
Grade Remanence Br Coercivity
Hcb 		Intrinsic Coercivity
Hcj 		Maximium Energy Product (BH)max
mT Gs kA/m Oe kA/m Oe kJ/m3 MGOe
Y8T 200-235 2000-2350 125-160 1570-2010 210-280 2640-3520 6.5-9.5 0.82-1.19
Y25 360-400 3600-4000 135-170 1700-2140 140-200 1760-2520 22.5-28.0 2.83-3.52
Y26H-1 360-390 3600-3900 200-250 2520-3140 225-255 2830-3200 23.0-28.0 2.89-3.52
Y28 370-400 3700-4000 175-210 2200-2640 180-220 2260-2760 26.0-30.0 3.27-3.77
Y28H-1 380-400 3800-4000 240-260 3015-3270 250-280 3140-3520 27.0-30.0 3.39-3.77
Y28H-2 360-380 3600-3800 271-295 3405-3705 382-405 4800-5090 26.0-28.5 3.27-3.58
Y30H-1 380-400 3800-4000 230-275 2890-3450 235-290 2950-3650 27.0-31.5 3.39-3.96
Y30H-2 395-415 3950-4150 275-300 3450-3770 310-335 3900-4210 27.0-32.0 3.39-4.02
Y32 400-420 4000-4200 160-190 2010-2400 165-195 2080-2450 30.0-33.5 3.77-4.21
Y32H-1 400-420 4000-4200 190-230 2400-2900 230-250 2900-3140 31.5-35.0 3.96-4.40
Y32H-2 400-440 4000-4400 224-240 2800-3020 230-250 2900-3140 31.0-34.0 3.89-4.27
Y33 410-430 4100-4300 220-250 2760-3140 225-255 2830-3200 31.5-35.0 3.96-4.40
Y33H 410-430 4100-4300 250-270 3140-3400 250-275 3140-3450 31.5-35.0 3.96-4.40
Y33H-2 410-430 4100-4300 285-315 3580-3960 305-335 3830-4210 31.8-35.0 4.0-4.40
Y34 420-440 4200-4400 250-280 3140-3520 260-290 3270-3650 32.5-36.0 4.08-4.52
Y35 430-450 4300-4500 230-260 2900-3270 240-270 3015-3400 33.1-38.2 4.16-4.80
Y36 430-450 4300-4500 260-290 3270-3650 265-295 3330-3705 35.1-38.3 4.41-4.81
Y38 440-460 4400-4600 285-315 3580-3960 295-325 3705-4090 36.6-40.6 4.60-5.10
Y40 440-460 4400-4600 315-345 3960-4340 320-350 4020-4400 37.6-41.6 4.72-5.23
Y41 450-470 4500-4700 245-275 3080-3460 255-285 3200-3580 38.0-42.0 4.77-5.28
Y41H 450-470 4500-4700 315-345 3960-4340 385-415 4850-5220 38.5-42.5 4.84-5.34
Y42 460-480 4600-4800 315-335 3960-4210 355-385 4460-4850 40.0-44.0 5.03-5.53
Y42H 460-480 4600-4800 325-345 4080-4340 400-440 5020-5530 40.0-44.0 5.03-5.53
Y43 465-485 4650-4850 330-350 4150-4400 350-390 4400-4900 40.5-45.5 5.09-5.72

Mechanical Physical Properties Of Ferrite Magnet
Density 4.8 ~ 5.1 g/cm³
Electrical Resistivity >=10(4) Ω.cm
Recoil Permeablility 1.05 ~ 1.03
Curie Temperature 460 ~ 480℃
Temperature Coefficient of Br -0.18 ~ -0.2 % / ℃ ( 0-100℃) 
Temperature Coefficient of Hc 0.2 ~ 0.5 % / ℃( 0-100℃)
Coefficient Of Linear Expansion 7 ~ 15  X 10(-6)  /℃

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