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Neodymium Iron Boron Sintered Magnet Ring For BLDC Motor

The Sintered Neomagnet Iron Boron has high remanence, high coercive force, widely used in DC motor , brushless motor, speaker, MRI and other.

The specification of the product is OD8.8*ID5*H22mm, used in motor. High Guauss over 4000GS with stable performance.

Model:
NdFeB Sintered magnet
Brand:
SPN
Code:
8505111000

Quantity:



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Product Description

I. Sintered NdFeB Magnets

Neodymium magnet is mainly made of Neodymium, Iron and Boron. Neodymium magnet is offered in range of operation tem 80℃ to 220℃. A sintered NdFeB magnet has high remanence, high coercive force, and is easily formed into various sizes and shapes. The magnet is suitable for being used in DC Motor, Brushless motor , Speaker, sensors and others.

II. Surface Treatment

Since NdFeB magnets easily corrode, it is often coated to protect against this. Traditional coatings are Nickel, Zinc, and Epoxy with other options available. Selection of a coating should be discussed early on in the design and application process. Sintered NdFeb canbe made in Arc, cylinder,ring and some irregular shape.

With a mature manufacturing process, strict quality assurance, complete technical service and superior price performance.

III. Sintered NdFeB Technical Process：

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IV:Physical properties of sintered NdFeB

Type	parameter	parameter values
Auxiliary magnetic property	(α(Br))/(%/K)Temperature Coefficient of residual induction	-0.08～-0.12
	Intrinsic coercivity temperature coefficient (α(Hcj)/%/K)	-0.42～-0.70
	Curie temperature (Tc)/K	310～380
	Recovery permeability (μrec) [ - ]	1.05
Mechanical physical properties	density /(g/cm3)	7.50～7.70
	Dimension hardness (Hv)	650
	Resistivity /(μΩ•m)	1.4
	Compressive strength /MPa	1050
	Tensile strength /MPa	80
	Bending strength	290
	Thermal conductivity /(W/(m•K) )	6～8
	Young modulus /GPa	160
	Coefficient of thermal expansion （Perpendicular to orientation）/(10-6/K)	-1.5
	Coefficient of thermal expansion （Parallel to orientation ）/(10-6/K)	6.5

V: Magnetic properties of sintered NdFeB

Magnetic properties of sintered NdFeB
No.	Grade	Residual induction (Br)		Intrinsic coercivity (Hcj)		Induction coercivity (Hcb)		Energy Product (BH)max		Maximum operating temperature
No.	Grade	T	kGs	kA/m	kOe	kA/m	kOe	kJ/m3	MGOe	℃
1	N35	1.17～1.22	11.7～12.2	955	12	868	10.9	263～287	33～36	80
2	N38	1.22～1.27	12.2～12.7	955	12	899	11.3	287～310	36～39	80
3	N40	1.25～1.30	12.5～13.0	955	12	923	11.6	302～326	38～41	80
4	N42	1.28～1.34	12.8～13.4	955	12	923	11.6	318～342	40～43	80
5	N45	1.33～1.38	13.3～13.8	955	12	876	11	342～366	43～46	80
6	N48	1.37～1.43	13.7～14.3	955	12	892	11.2	366～390	46～49	80
7	35M	1.17～1.22	11.7～12.2	1114	14	868	10.9	263～287	33～36	100
8	38M	1.22～1.27	12.2～12.7	1114	14	899	11.3	287～310	36～39	100
9	45M	1.33～1.38	13.3～13.8	1114	14	995	12.5	342～366	43～46	100
10	48M	1.37～1.43	13.7～14.3	1114	14	1019	12.8	358～390	46～49	100
11	50M	1.39～1.45	13.9～14.5	1114	13	1035	13	374～406	47～51	100
12	33H	1.13～1.18	11.3～11.8	1353	17	836	10.5	247～270	31～34	120
13	35H	1.17～1.22	11.7～12.2	1353	17	868	10.9	263～287	33～36	120
14	38H	1.22～1.27	12.2～12.7	1353	17	899	11.3	287～310	36～39	120
15	40H	1.25～1.30	12.5～13.0	1353	17	923	11.6	302～326	38～41	120
16	42H	1.28～1.34	12.8～13.4	1353	17	955	12	318～342	40～43	120
17	45H	1.33～1.38	13.1～13.8	1353	17	963	12.1	334～358	43～46	120
18	48H	1.37～1.43	13.7～14.3	1353	16	971	12.2	342～366	45～49	120
19	33SH	1.13～1.18	11.3～11.8	1592	20	844	10.6	247～270	31～34	150
20	35SH	1.17～1.22	11.7～12.2	1592	20	876	11	263～287	33～36	150
21	38SH	1.22～1.27	12.2～12.7	1592	20	907	11.4	287～310	36～39	150
22	40SH	1.25～1.30	12.5～13.0	1592	20	939	11.8	302～326	38～41	150
23	42SH	1.28～1.34	12.8～13.4	1592	20	971	12.2	318～342	40～43	150
24	45SH	1.32～1.38	13.2～13.8	1592	19	995	12.3	342～366	43～46	150
25	48SH	1.36～1.42	13.6～14.2	1512	19	995	12.5	358～390	45～49	150
26	35UH	1.17～1.22	11.7～12.2	1990	25	860	10.8	263～287	33～36	180
27	38UH	1.22～1.27	12.2～12.7	1990	25	876	11	287～310	36～39	180
28	40UH	1.26～1.30	12.6～13.0	1911	24	915	11.5	302～326	38～41	180
29	42UH	1.30～1.35	13.0～13.5	1911	24	971	12.2	310～342	39～43	180
30	30EH	1.08～1.14	10.8～11.4	2388	30	812	10.2	223～254	28～32	200
31	33EH	1.13～1.18	11.3～11.8	2388	30	820	10.3	247～270	31～34	200
33	35EH	1.17～1.22	11.7～12.2	2388	30	836	10.5	263～287	33～36	200
34	38EH	1.22～1.27	12.2～12.7	2388	30	915	11.5	279～310	35～39	200