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Hard Ferrite isotropic sintered magnet rings for stepping motor

Isotropic sintered ferrite magnets, they have nearly the same magnetic properties in all directions，can be magnetized in many different directions in multi-poles; the products specification is OD30*ID21*H25.4 widely used in stepping motors

Model:
Ferrite isotropic magne
Brand:
SPN
Code:
85051900

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Product Description

Isotropic Ferrite Multipole Magnet Rings

Isotropic sintered ferrite magnets’ magnetic properties are low, they have nearly the same magnetic properties in all directions，can be magnetized in many different directions in multi-poles;

Dry Press radial multipole ferrite magnetic ring includes molding, sintering, grinding machining, injection molding and magnetizing processes. The Products are with excellent performance, especially for the dry pressing anisotropic magnetic ring witch the highest magnetic density is up to 1600-1700GS. According to customer’s requirements to design and development as well provide all kinds of injection molding magnets. The products are widely used in synchronous motor. Micro motor, pump motor, toy motors, sensors, electronic instruments and other fields.

II：Manufacturing process and magnetizing

① With dry process can produce isotropic & anisotropic magnets, the tool can be changed and developed easily.

② With wet process only can produce anisotropic magnets,it is complicated to change the tool and the tooling charge is high.

③ Isotropic ferrite magnets can be magnetized in any direction.

④ Anisotropic ferrite magnets are all oriented in the manufacturing direction, and can be magnetized in the direction of orientation.

III: Partially sintered ferrite multipole magnetic ring specification and surface flux density list

序号 No.	规格 Specification	外径 Outside Diameter	内径 Inside Diameter	高度 Height	极数 Polar	表面磁通密度 Surface magnetic flux density (GS)
1	OD 25* ID (6.5~7.0) * H25~40	25	6.5~7.0	25~40	2	1400-2100
2	OD 19* ID (6~7)*30	18	6~7	30	2	1400-2100
3	OD15* ID (5~6)*H (18~30)	15	5~6	18~30	2	1400-2100
4	OD38.4ID16H28	38.4	16	28	4	1400-2100
5	OD32ID10.6H18	32	10.6	18	4	1400-2100
6	OD30ID10H30	30	10	30	4	1400-2100
7	OD22ID10H30	22	10	30	4	1400-2100
8	OD16ID5H30	16	5	30	4	1400-2100
9	OD37.7ID16H15	37.7	16	15	6	1400-2100
10	OD35.4ID15H18	35.4	15	18	6	1400-2100
11	OD54ID35H31	54	35	31	6	1400-2100
12	OD53.7ID34.7H(25~40)	53.7	34.7	25~40	8	1400-2100
13	OD23.4ID11H9.5	23.4	11	9.5	8	1400-2100
14	OD50ID30H30	50	30	30	8	1400-2100
15	OD37ID22H20	37	22	20	10	1400-2100
16	OD16ID9H18	16	9	18	12	1400-2100
17	OD12.2ID7H13	12.2	7	13	12	1400-2100
18	OD32.9ID24H30	32.9	24	30	24	1400-2100
19	OD30ID21H25.5	30	21	25.5	24	1400-2100
20	OD36.2ID1825-4P	36.2	18	25	4	1400-2100
21	OD34.8ID17H26-8P	34.8	17	26	8	1400-2100
22	OD20.8ID6H30-4P	20.8	6	30	4	1400-2100
23	OD24.4ID14.2H15-4P	24.4	14.2	25	4	1400-2100
24	OD45.5ID25.5H25-8P	45.5	25.5	25	8	1400-2100
25	OD50ID27H21-8P	50	27	21	8	1400-2100
26	OD50.3ID2730-8P	50.3	27	30	8	1400-2100
27	OD54ID35H40-8P	54	35	40	8	1400-2100
28	OD54.5ID33H36-8P	54.5	33	36	8	1400-2100
29	OD53.8ID35H35-6P	53.8	35	35	6	1400-2100
30	OD59ID39H26-6P	59	39	26	6	1400-2100