Permanent ferrite magnet is made of SrO or BaO and Fe2O3Â by ceramic processing technology.
Anisotropic sintered ferrite magnets have higher magnetic properties compare with isotropic ferrite magnet.
However, this type of magnets can only be magnetized along the preferred direction;the sintered Ferrite has
an excellent resistance to demagnetization.Â
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The Polar Anisotropic Ferrite Ring Magnets are the magnets with multipoles in ring shape. They have
become the key component of stepping motors which are widely used in computer peripheral and
consumer electronics, such as washing machine,different types of pumps, Â printer and digital -camera,etc.
II. Dimension specification :Â
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| No. | Specification | Polar |
   Surface magnetic     flux density  (GS) |
| 1 | OD 25* ID (6.5~7.0) * H25~40 | 2 | 1400-2100 |
| 2 | OD 19* ID (6~7)*30 | 2 | 1400-2100 |
| 3 | OD15* ID (5~6)*H (18~30) | 2 | 1400-2100 |
| 4 | OD38.4*ID16*H28 | 4 | 1400-2100 |
| 5 | OD32*ID10.6*H18 | 4 | 1400-2100 |
| 6 | OD30*ID10*H30 | 4 | 1400-2100 |
| 7 | OD22*ID10*H30 | 4 | 1400-2100 |
| 8 | OD16*ID5*H30 | 4 | 1400-2100 |
| 9 | OD37.7*ID16*H15 | 6 | 1400-2100 |
| 10 | OD35.4*ID15*H18 | 6 | 1400-2100 |
| 11 | OD54*ID35*H31 | 6 | 1400-2100 |
| 12 | OD53.7*ID34.7*H(25~40) | 8 | 1400-2100 |
| 13 | OD23.4*ID11*H9.5 | 8 | 1400-2100 |
| 14 | OD50*ID30*H30 | 8 | 1400-2100 |
| 15 | OD37*ID22*H20 | 10 | 1400-2100 |
| 16 | OD16*ID9*H18 | 12 | 1400-2100 |
| 17 | OD12.2*ID7*H13 | 12 | 1400-2100 |
| 18 | OD32.9*ID24*H30 | 24 | 1400-2100 |
| 19 | OD30*ID21*H25.5 | 24 | 1400-2100 |
III. Ferrite anisotropic multipole magnet rings      Â
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Using the latest innovative technologies to make magnetic multi pole rings with high coercive force, strong corrosion resistance and oxidation resistance. The surface of magnetic flux density has reached 0.2T, Concerning widely application with large difficulties of 4 poles magnet which density can reach 0.18~0.195T.
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According to customer's request, good quality with competitive price and best delivery time, one station service. Guarantee the best price based on the same quality.Â
IV:Â
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|  Grade | Residual induction  (Br) | Coercive force (HcB) | Intrinsic coercive force (HcJ) | Energy product (BH)max | ||||
| mT | KGauss | KA/m | KOe | KA/m | KOe | KJ/m3 | MGOe | |
| Y8T | 200~235 | 2.0~2.35 | 125-160 | 1.57-2.01 | 210-280 | 2.64-3.51 | 6.5-9.5 | 0.8-1.2 |
| Y22H | 310~360 | 3.10~3.60 | 220-250 | 2.76-3.14 | 280-320 | 3.51-4.02 | 20.0-24.0 | 2.5-3.0 |
| Y25 | 3 60~400 | 3.60~4.00 | 135-170 | 1.70-2.14 | 140-200 | 1.76-2.51 | 22.5-28.0 | 2.8-3.5 |
| Y26H | 360~380 | 3.60~3.80 | 263-288 | 3.30-3.62 | 318-350 | 3.99-4.40 | 24.0-28.0 | 3.0-3.5 |
| Y27H | 350~380 | 3.50~3.80 | 225-240 | 2.83-3.01 | 235-260 | 2.95-3.27 | 25.0-29.0 | 3.1-3.6 |
| Y28 | 370~400 | 3.70~4.00 | 175-210 | 2.20-3.64 | 180-220 | 2.26-2.76 | 26.0-30.0 | 3.3-3.8 |
| Y30BH | 380~400 | 3.80~4.00 | 230-275 | 2.89-3.46 | 235-290 | 2.95-3.64 | 27.0-32.5 | 3.4-4.1 |
| Y33 | 410~430 | 4.10~4.30 | 220-250 | 2.76-3.14 | 225-255 | 2.83-3.20 | 31.5-35.0 | 3.9-4.4 |
| Y34 | 420~440 | 4.20~4.40 | 200-230 | 2.51-2.89 | 205-235 | 2.57-2.95 | 32.5-36.0 | 4.1-4.4 |
| Y35 | 430~450 | 4.30~4.50 | 215-239 | 2.70-3.00 | 217-241 | 2.73-3.03 | 33.1-38.2 | 4.1-4.8 |
| Y36 | 430~450 | 4.30~4.50 | 247-271 | 3.10-3.40 | 250-274 | 3.14-3.44 | 35.1-38.3 | 4.4-4.8 |
| Y38 | 440~460 | 4.40~4.60 | 285-305 | 3.58-3.83 | 294-310 | 3.69-3.89 | 36.6-40.6 | 4.6-5.1 |
| Y40 | 440~460 | 4.40~4.60 | 330-354 | 4.15-4.45 | 340-360 | 4.27-4.52 | 37.6-41.8 | 4.7-5.2 |
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Sealand is a trustworthy manufacturer of CNG Mass Flow Meter, CNG Mass Flowmeter, CNG Flow Meter, CNG Flowmeter, CNG Coriolis Meter, ATEX, IECEx & CE approved.
With its high accuracy, wide rangeability and reliable performance, Sealand meter has been applied in many kinds of industries during the last 8 years. Unlike others who only focus on the measurement of liquid at normal pressure & temperature, Sealand has conquered the difficulty in the measurement under severe conditions, such as high pressure, high viscosity, high & low temperature.
Take CNG (compressed natural gas) for example. As the saying goes, the meter can measure anything else if it can measure CNG. It is quite hard to measure gas under high pressure. The sensor must be able to bear high pressure; in this way, the thickness of flow tube must be increased, so the transmitter shall be more sensitive to detect the signal; however, Sealand made it. Sealand's first model is specially designed for CNG dispenser, and now thousands of this model are put into use on the market.
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