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. 
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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Ferrite Permanent Magnet Ring for Draught Fan
Model NO.: ferrite magnet
Export Markets: Global
Maximum Working Temperature: 250 Degrees Celsius
Trademark: KZST
Transport Package: Wooden or as Per Requirement
Specification: SGS
Origin: China
HS Code: 8505119000
I. Polar Anisotropic Ferrite Ring MagnetsÂ