China permanent magnet manufacturer: www.rizinia.com

N45 NdFeB Ring Magnet D9mm*3.37mm*4.5mm

Port: Ningbo or Shanghai, China 
Production Capacity: 500000000PCS/Season
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Magnetization Direction: Axial/Radial/Multi-Poles Magnetization
Color: Silver, golden
Coating: Nickel,Copper,Gold,Silver,Zinc
Grade: N35-N52
Shape: Disc,block,arc
Material: Sintered Neodymium-Iron-Boron
HS Code: 8505111000
Tolerance: +/- 0.05mm
Transport Package: Carton, Wood Case, Anti-Magnetized Package
Sample: Avaliable
OEM: Acceptable
Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet

  • PRODUCT DETAIL

Specification of N45 NdFeB Ring Magnet D9mm*3.37mm*4.5mm
Texture of material N45
Remanence br 1.354T 13.54KGs
Coercivity HCB 983.7 kA/m 12.36kOe
Intrinsic coercivity Hcj 1004 kA/m 12.62kOe
Maximum magnetic energy product (BH) max 44.28MGOe
Size Diameter 9mm * thickness 3.37mm – mesopore 4.5mm
Tolerance The diameter is ± 0.05mm and the thickness is ± 0.1mm
Coating Nickel copper nickel
Magnetization direction Axial magnetization
Surface magnetic field 3800GS
Pull 0.48kg
Working temperature The maximum working temperature is 80 ℃
Single weight 1.4g

Properties of N45

PROPERTIES: BR BR HCB HCB HCJ HCJ BHMAX BHMAX REV. TEMP. COEF. REV. TEMP. COEF. TEMP.
Grade
Typical mT
Typical gauss
min kA/m
min oersteds
min kA/m
min oersteds
Typical kJ/m3
Typical MGOe
Br %/°C
HcJ %/°C
max °C
N30
1105
11,050
796
10,000
955
12,000
235
30
-0.12
-0.75
80
N33
1150
11,500
836
10,500
955
12,000
259
33
-0.12
-0.75
80
N35
1210
12,100
860
10,800
955
12,000
283
35
-0.12
-0.75
80
N38
1260
12,600
860
10,800
955
12,000
306
38
-0.12
-0.75
80
N40
1285
12,850
923
11,600
955
12,000
318
40
-0.12
-0.75
80
N42
1315
13,150
860
10,800
955
12,000
334
42
-0.12
-0.75
80
N45
1350
13,500
860
10,800
955
12,000
350
44
-0.12
-0.75
80
N48
1400
14,000
836
10,500
955
12,000
390
49
-0.12
-0.75
80
N50
1425
14,250
836
10,500
955
12,000
390
49
-0.12
-0.75
80
N52
1450
14,500
836
10,500
876
11,000
406
51
-0.12
-0.75
60
N55
1490
14,900
716
9,000
876
11,000
430
54
-0.12
-0.75
60
N33M
1175
11,750
836
10,500
1114
14,000
267
34
-0.12
-0.675
100
N35M
1210
12,100
868
10,900
1114
14,000
283
35
-0.12
-0.675
100
N38M
1260
12,600
899
11,300
1114
14,000
307
39
-0.12
-0.675
100
N40M
1285
12,850
923
11,600
1114
14,000
322
40
-0.12
-0.675
100
N42M
1315
13,150
955
12,000
1114
14,000
338
42
-0.12
-0.675
100
N45M
1350
13,500
971
12,200
1114
14,000
354
44
-0.12
-0.675
100
N48M
1395
13,950
995
12,500
1114
14,000
378
48
-0.12
-0.675
100
N50M
1415
14,150
1035
13,000
1114
14,000
390
49
-0.12
-0.675
100
N52M
1445
14,450
995
12,500
1035
13,000
406
51
-0.12
-0.675
100
N30H
1105
11,050
796
10,000
1353
17,000
235
30
-0.12
-0.605
120
N33H
1175
11,750
836
10,500
1353
17,000
267
34
-0.12
-0.605
120
N35H
1210
12,100
868
10,900
1353
17,000
283
35
-0.12
-0.605
120
N38H
1260
12,600
899
11,300
1353
17,000
307
39
-0.12
-0.605
120
N40H
1285
12,850
923
11,600
1353
17,000
322
40
-0.12
-0.605
120
N42H
1300
13,000
955
12,000
1353
17,000
330
41
-0.12
-0.605
120
N45H
1350
13,500
971
12,200
1353
17,000
354
44
-0.12
-0.605
120
N48H
1390
13,900
1011
12,700
1353
17,000
378
48
-0.12
-0.605
120
N50H
1415
14,150
1035
13,000
1274
16,000
390
49
-0.12
-0.605
120
N30SH
1125
11,250
811
10,200
1592
20,000
243
31
-0.12
-0.535
150
N33SH
1175
11,750
844
10,600
1592
20,000
267
34
-0.12
-0.535
150
N35SH
1210
12,100
876
11,000
1592
20,000
283
35
-0.12
-0.535
150
N38SH
1260
12,600
907
11,400
1592
20,000
307
39
-0.12
-0.535
150
N40SH
1285
12,850
939
11,800
1592
20,000
322
40
-0.12
-0.535
150
N42SH
1310
13,100
955
12,000
1592
20,000
330
41
-0.12
-0.535
150
N45SH
1350
13,500
979
12,300
1592
20,000
354
44
-0.12
-0.535
150
N48SH
1390
13,900
995
12,500
1512
19,000
374
47
-0.12
-0.535
150
N28UH
1075
10,750
764
9,600
1990
25,000
227
29
-0.12
-0.465
180
N30UH
1125
11,250
812
10,200
1990
25,000
243
31
-0.12
-0.465
180
N33UH
1175
11,750
852
10,700
1990
25,000
267
34
-0.12
-0.465
180
N35UH
1210
12,100
860
10,080
1990
25,000
283
35
-0.12
-0.465
180
N38UH
1260
12,600
876
11,000
1990
25,000
307
39
-0.12
-0.465
180
N40UH
1285
12,850
915
11,500
1990
25,000
318
40
-0.12
-0.465
180
N42UH
1310
13,100
955
12,000
1990
25,000
330
41
-0.12
-0.465
180
N45UH
1350
13,500
955
12,500
1910
24,000
358
45
-0.12
-0.465
180
N28EH
1085
10,850
780
9,800
2388
30,000
227
29
-0.12
-0.42
200
N30EH
1125
11,250
812
10,200
2388
30,000
243
31
-0.12
-0.42
200
N33EH
1165
11,650
820
10,300
2388
30,000
267
34
-0.12
-0.42
200
N35EH
1200
12,000
836
10,500
2388
30,000
279
35
-0.12
-0.42
200
N38EH
1235
12,350
899
11,300
2388
30,000
303
38
-0.12
-0.42
200
N40EH
1270
12,700
915
11,500
2388
30,000
314
39
-0.12
-0.42
200
N42EH
1310
13,100
971
12,200
2308
29,000
326
41
-0.12
-0.42
200
N28AH
1075
10,750
780
9,800
2706
34,000
223
28
-0.12
-0.393
220
N30AH
1120
11,200
812
10,200
2706
34,000
239
30
-0.12
-0.393
220
N33AH
1140
11,400
812
10,200
2706
34,000
231
29
-0.12
-0.393
220
N35AH
1195
11,950
883
11,100
2706
34,000
275
35
-0.12
-0.393
220
N38AH
1240
12,400
923
11,600
2626
33,000
299
38
-0.12
-0.393
220

Dimension tolerance and sizes of magnets

Sizes that can be made for neodymium magnets dimension tolerance

size diameter - N45 NdFeB Ring Magnet D9mm*3.37mm*4.5mm size ring - N45 NdFeB Ring Magnet D9mm*3.37mm*4.5mm size block - N45 NdFeB Ring Magnet D9mm*3.37mm*4.5mm size sphere - N45 NdFeB Ring Magnet D9mm*3.37mm*4.5mm

Standard products Outer diameter D,OD Internal diameter ID Length L Width W Height H
< 5mm ±0.1mm ±0.1mm ±0.1mm ±0.1mm ±0.1mm
< 10mm ±0.1mm ±0.1mm ±0.1mm ±0.1mm ±0.1mm
< 20mm ±0.1mm ±0.1mm ±0.1mm ±0.1mm ±0.1mm
< 50mm ±0.1mm ±0.1mm ±0.1mm ±0.1mm ±0.1mm
<100mm ±0.15mm ±0.15mm ±0.15mm ±0.15mm ±0.15mm
>100mm ±0.2mm ±0.2mm ±0.2mm ±0.2mm ±0.2mm
Custom-made products Outer diameter D,OD Internal diameter ID Length L Width W Height H
< 5mm ±0.05mm ±0.05mm ±0.05mm ±0.05mm ±0.05mm
< 10mm ±0.05mm ±0.05mm ±0.05mm ±0.05mm ±0.05mm
< 20mm ±0.05mm ±0.05mm ±0.05mm ±0.05mm ±0.05mm

If the tolerance is designated for a custom-made magnet, the above precision is required.

Ferrite magnets dimension tolera:

  • All shapes ±2%

Sizes that can be made for neodymium magnets

The sizes that can be made will depend on the grade of the material. Currently, the maximum length possible is 150mm. Due to facility restrictions, it may not be possible to make large items that use materials other than N35.

Discs/Rods D Diameter H Height,T Thickness Direction of magnetization
Maximum 200mm 30mm Height H,Diameter D
Minimum 1mm 0.5mm Height H,Diameter D
Rings OD Outer diameter ID Internal diameter H Height,T Thickness Direction of magnetization
Minimum 1 200mm 180mm 40mm Height H
Maximum 2 90mm 70mm 80mm Diameter D
Minimum 3mm 1mm 1mm Height H,Diameter D
Squares L Length W Width H Height,T Thickness Direction of magnetization
Maximum1 245mm 80mm 40mm Height H
Maximum2 150mm 100mm 44mm Height H
Minimum 1mm 1mm 1mm Height H

Sizes that can be made for samarium cobalt magnets

The sizes that can be made will depend on the grade of the material. Currently, the maximum length possible is 150mm.

Discs/Rods D Diameter H Height,T Thickness Direction of magnetization
Maximum 100mm 100mm Height H,Diameter D
Minimum 1mm 0.5mm Height H,Diameter D
Rings OD Outer diameter ID Internal diameter H Height,T Thickness Direction of magnetization
Maximum 100mm 80mm 60mm Height H,Diameter D
Minimum 1.2mm 0.5mm 0.5mm Height H,Diameter D
Squares L Length W Width H Height,T Thickness Direction of magnetization
Maximum 200mm 100mm 120mm Height H
Minimum 1mm 1mm 0.5mm Height H

Sizes that can be made for ferrite magnets

Discs/Rods D Diameter H Height,T Thickness Direction of magnetization
Maximum 181mm 5mm-29mm Height H
Minimum 6mm 2mm Height H,Diameter D
Rings OD Outer diameter ID Internal diameter H Height,T Thickness Direction of magnetization
Maximum 400mm 240mm 5mm-25mm Height H
Minimum 18mm 1.4mm 3mm Height H,Diameter D
Squares L Length W Width H Height,T Thickness Direction of magnetization
Maximum 6″(152.4mm) 4″(101.6mm) 1″(25.4mm) Height H
Minimum 2mm 2mm 2mm Height H

China NdFeB Ring Magnets Manufacturer www.rizinia.com supplies N45 NdFeB ring magnets, block countersunk magnets, arc countersunk magnets for scientific experiments or for industrial applications.

This product is not a toy and is not to be used by children. This product is to be used for scientific experiments or for industrial applications. This product contains strong Neodymium magnet(s) that can be harmful or fatal if swallowed. Strong Neodymium magnets are fragile, they are brittle and will break or chip if they hit a hard surface or are snagged together. Always use the utmost care when handling Neodymium magnets.

Summary
n45 ndfeb ring magnet d9mm3 37mm4 5mm 1 - N45 NdFeB Ring Magnet D9mm*3.37mm*4.5mm
Author Rating
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Brand Name
Actility
Product Name
N45 NdFeB Ring Magnet D9mm*3.37mm*4.5mm
Price
USD 0.001-9999
Product Availability
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