Ferrite segment magnets, also known as arc-shaped ceramic magnets, are typically used in motor stators and rotors. These magnets are formed into curved segments that fit around circular structures to create a uniform magnetic field. Made from sintered ferrite materials, segment magnets are cost-efficient, resistant to oxidation, and offer consistent performance in various mechanical environments.
These magnets are widely used in household appliances, fan motors, and automotive electric motors where performance and affordability must be balanced.
Ferrite segment magnets provide moderate magnetic force and are extremely stable under thermal and chemical stress. Their shape is specifically designed for radial magnetic applications, offering efficient flux distribution in motor assemblies.
Why choose Ferrite Segment Magnet
● Motor-optimized design: The arc shape fits perfectly into circular stator structures, maximizing magnetic efficiency.
● Durability: Highly resistant to demagnetization and corrosion without the need for coating.
● Thermal stability: Operates effectively under high-temperature conditions.
● Cost-efficient production: Ideal for mass production due to low raw material and processing costs.
● Reliable for long-term use: Ferrite material ensures performance longevity with minimal degradation.
Ferrite segment magnets are mainly used in permanent magnet DC motors, washing machine motors, ceiling fans, and motorcycle starter motors. Their arc structure allows them to form a consistent magnetic field inside circular motor housings, making them an essential component in motor-driven systems with moderate power requirements.
Physical Characteristics
Material | Br | Hcb | Hcj | (BH)max | Remarks | ||||
(Gs) | (mT) | (Oe) | (kA/m) | (Oe) | (MGOe) | (kJ/m)3 | |||
KV2130 | 2000-2350 | 200-235 | 1570-2009 | 125-160 | 2637-3516 | 210-280 | 0.81-1.19 | 6.5-9.5 | HF8/22、Y8T、C1、FB1A |
KV2330 | 2200-2400 | 220-240 | 1695-2198 | 135-175 | 3491-4019 | 278-320 | 1.06-1.39 | 8.5-11.1 | Y10T |
KV3337 | 3100-3600 | 310-360 | 2763-3140 | 220-250 | 3516-4019 | 280-320 | 2.5-3.5 | 20-24 | HF20/28、Y22H |
KV3631 | 3500-3800 | 350-380 | 2826-3140 | 225-250 | 2951-3265 | 235-260 | 3.1-3.7 | 24.7-29.5 | HF25/22、Y26H-1 |
KV3640 | 3500-3700 | 350-370 | 3100-3500 | 247-279 | 3800-4300 | 303-342 | 2.8-3.4 | 22.3-27.1 | C7、PMF-2BB |
KV3730 | 3600-3900 | 360-390 | 2512-3140 | 200-250 | 2836-3202 | 225-255 | 2.9-3.5 | 23.1-27.9 | HF22/30、Y27H |
KV3742 | 3600-3800 | 360-380 | 3303-3617 | 241-288 | 3994-4396 | 318-350 | 3.0-3.5 | 23.9-27.9 | HF24/35、Y26H-2 |
KV3749 | 3600-3800 | 360-380 | 3391-3705 | 270-295 | 4797-5086 | 382-405 | 3.3-3.8 | 26.3-30.3 | Y28H-2 |
KV3820 | 3600-4000 | 360-400 | 1695-2135 | 135-170 | 1758-2512 | 140-200 | 2.8-3.5 | 22.3-27.9 | HF25/14、Y25 |
KV3825 | 3700-4000 | 370-400 | 2198-2637 | 175-210 | 2260-2763 | 180-220 | 2.9-3.8 | 23.1-30.3 | HF26/18、Y28 |
KV3828 | 3700-4000 | 370-400 | 2300-2700 | 183-215 | 2500-3000 | 199-239 | 2.9-3.8 | 23.1-30.3 | C5 |
KV3838 | 3700-4000 | 370-400 | 3200-3600 | 255-287 | 3700-4100 | 263-326 | 3.0-3.7 | 23.9-29.5 | C9 |
KV3849 | 3700-3900 | 370-390 | 3100-3500 | 246-279 | 4800-5200 | 382-415 | 3.1-3.7 | 24.7-29.5 | Y28H-2、FB6E、PMF-2BF |
KV3926 | 3800-4000 | 380-400 | 2300-2700 | 183-215 | 2400-2800 | 191-223 | 3.4-4.0 | 27.1-31.8 | Y30 |
KV3930 | 3800-4050 | 380-405 | 2800-3200 | 223-255 | 2900-3300 | 230-263 | 3.4-4.0 | 27.1-31.8 | HF26/26、Y30H-1、Y30BH |
KV3934 | 3800-4000 | 380-400 | 3000-3400 | 238-270 | 3200-3600 | 255-287 | 3.5-4.0 | 22.3-31.8 | C8、PMF-2BD |
KV3939 | 3800-4000 | 380-400 | 3200-3600 | 255-287 | 3800-4200 | 303-334 | 3.2-4.0 | 25.5-31.8 | HF26/30、PMF-2BE |
KV4026 | 3900-4100 | 390-410 | 2300-2700 | 183-215 | 2400-2800 | 191-223 | 3.3-4.0 | 26.3-31.8 | HF32/17 |
KV4030 | 3900-4100 | 390-410 | 2800-3200 | 223-255 | 2900-3300 | 230-263 | 3.5-4.1 | 22.3-32.6 | FB3N、C8A |
KV4034 | 3900-4100 | 390-410 | 3000-3400 | 238-270 | 3200-3600 | 255-287 | 3.5-4.2 | 22.3-33.4 | FB4B、C10 |
KV4038 | 3900-4100 | 390-410 | 3200-3600 | 255-287 | 3600-4000 | 287-318 | 3.6-4.2 | 28.7-33.4 | |
KV4040 | 3900-4150 | 390-415 | 3300-3700 | 263-295 | 3800-4200 | 303-334 | 3.6-4.3 | 28.7-34.2 | FB5H、Y30H-2、C12、PMF-5BE |
KV4045 | 3900-4100 | 390-410 | 3300-3700 | 263-295 | 4350-4800 | 346-382 | 3.6-4.3 | 28.7-34.2 | FB6B、PMF-6BE |
KIV4050 | 3900-4100 | 390-410 | 3400-3800 | 270-303 | 4800-5200 | 382-415 | 3.5-4.2 | 22.3-33.4 | PMF-6BE |
KV4123 | 4000-4200 | 400-420 | 2000-2400 | 159-191 | 2100-2500 | 167-199 | 3.6-4.2 | 28.7-33.4 | |
KV4126 | 4000-4200 | 400-420 | 2300-2700 | 183-215 | 2500-2900 | 199-231 | 3.6-4.3 | 28.7-34.2 | |
KV4129 | 4000-4200 | 400-420 | 2700-3100 | 215-247 | 2800-3200 | 223-255 | 3.7-4.3 | 29.5-34.2 | |
KV4132 | 4000-4200 | 400-420 | 2900-3300 | 230-263 | 3000-3400 | 238-270 | 3.7-4.3 | 29.5-34.2 | |
KV4135 | 4000-4200 | 400-420 | 3100-3500 | 246-279 | 3300-3700 | 263-295 | 3.8-4.4 | 30.3-35 | FB5B、PMF-5BD、Y33H |
KV4138 | 4000-4200 | 400-420 | 3300-3700 | 263-295 | 3600-4000 | 287-318 | 3.8-4.4 | 30.3-35 | |
KV4141 | 4000-4200 | 400-420 | 3400-3800 | 270-303 | 3900-4300 | 310-342 | 3.8-4.5 | 30.3-35.8 | |
KV4150 | 4000-4200 | 400-420 | 3400-3800 | 270-303 | 4800-5200 | 382-415 | 3.8-4.5 | 30.3-35.8 | |
KV4228 | 4100-4300 | 410-430 | 2400-2800 | 191-223 | 2600-3000 | 207-239 | 3.8-4.5 | 30.3-35.8 | |
KV4230 | 4100-4300 | 410-430 | 2600-3000 | 207-239 | 2800-3200 | 223-255 | 3.8-4.5 | 30.3-35.8 | |
KV4234 | 4100-4300 | 410-430 | 3000-3400 | 239-270 | 3200-3600 | 255-287 | 3.9-4.5 | 31-35.8 | FB4X、PMF-6BB、C11、Y33 |
KV4237 | 4100-4300 | 410-430 | 3200-3600 | 255-287 | 3500-3900 | 279-310 | 3.9-4.6 | 31-36.6 | |
KV4240 | 4100-4300 | 410-430 | 3500-3900 | 279-310 | 3800-4200 | 303-334 | 4.0-4.6 | 31.8-36.6 | PMF-7BE |
KV4245 | 4100-4300 | 410-430 | 3500-3900 | 279-310 | 4350-4800 | 346-382 | 4.0-4.6 | 31.8-36.6 | |
KV4254 | 4100-4300 | 410-430 | 3600-4000 | 287-318 | 5100-5500 | 406-438 | 4.0-4.6 | 31.8-36.6 | PMF-9BG |
KV4328 | 4200-4400 | 420-440 | 2500-2900 | 199-231 | 2600-3000 | 207-239 | 4.0-4.6 | 31.8-36.6 | |
KV4335 | 4200-4400 | 420-440 | 3200-3600 | 255-287 | 3400-3800 | 270-303 | 4.1-4.5 | 32.6-35.8 | FB6N、PMF-7BD、Y36 |
KV4350 | 4200-4400 | 420-440 | 3600-4100 | 287-326 | 4800-5200 | 382-415 | 4.1-4.7 | 32.6-37.4 | FB9H、PMF-9BF |
KV4429 | 4300-4500 | 430-450 | 2700-3100 | 215-247 | 2800-3200 | 223-255 | 4.1-4.8 | 32.6-38.2 | PMF-7BB |
KV4435 | 4300-4500 | 430-450 | 3000-3400 | 239-270 | 3300-3700 | 263-295 | 4.1-4.8 | 32.6-38.2 | |
KV4445 | 4300-4500 | 430-450 | 3700-4100 | 295-326 | 4300-4700 | 342-375 | 4.2-4.8 | 33.4-38.2 | FB9B、PMF-9BE、Y40 |
KV4450 | 4300-4500 | 430-450 | 3700-4200 | 295-334 | 4800-5200 | 382-415 | 4.1-4.8 | 32.6-38.2 | PMF-12BG |
KV4537 | 4400-4600 | 440-460 | 3100-3600 | 246-287 | 3500-4000 | 279-318 | 4.2-5.0 | 33.4-39.8 | FB9N、PMF-9BD、Y38 |
KV4647 | 4500-4700 | 450-470 | 3600-4200 | 287-334 | 4500-4900 | 358-390 | 4.3-5.2 | 34.2-41.4 | PMF-12BF |
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Sintered Ferrite Magnet Materials
Zhejiang Kaiven Magnet Co., Ltd. was founded in 1987 with a registered capital of 40.18 million yuan. It is a professional manufacturer of high-tech magnetic materials that integrates production, scientific research, and sales. The company covers an area of 76 acres with a building area of 60000 square meters. It has eight workshops including pre sintering, ball milling, forming, sintering, dry pressing, grinding processing, packaging, and metalworking, as well as two provincial-level scientific research and innovation platforms. The company specializes in the research and production of large arc magnetic tiles and ultra large and ultra-thin magnets, which are widely used in fields such as automotive motors, aviation, aerospace, air conditioning motors, audio systems, and speakers.?The specific production process flow chart is as follows:
Kaiven is committed to becoming a world-renowned supplier of permanent magnet material application solutions in the field of new generation consumer electronics and energy-saving home appliances. Welcome to visit our NdFeB ring magnet factory in China.
The company applies technologies such as casting columnar crystal growth control technology, grain refinement and micro-optimization technology, etc., and is committed to improving the consistency of powder and giving full play to the performance potential of rare earth. By improving the smelting microstructure, applying fine-grain technology, and optimizing the mixing process, etc., significantly improving the performance of NdFeB magnets.
The company has applied and improved low-oxygen magnet preparation technology and cold isostatic pressing technology, so that NdFeB magnets are in a low-oxygen state during the pressing process, and the preparation of molding blanks is continuously optimized, which effectively reduces the loss of rare earth. The application of low-temperature sintering heat treatment technology has further improved the sintering process. Adjusting the temperature to a suitable state can give full play to the performance of the formula. The representative products are high-performance N55 magnets prepared by low-oxygen technology and N38UH magnets produced by near-net molding technology.
In order to pursue the accurate precision of customer customization, the company applies high-performance ultra-thin small special-shaped permanent magnet preparation technology to carry out high-efficiency and low-loss precision machining of NdFeB blanks, breaking through the technical bottleneck of high-performance thin and small magnet processing difficulty, and Strictly control product appearance defects through intelligent image appearance automatic inspection technology to improve inspection efficiency and accuracy.
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Established in 1987. With advanced technology and strong R&D capabilities, Kaiven Magnet has grown into a leading ferrite magnets and neodymium magnets manufacturer and exporter in China.
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