Custom Ring Ceramic Magnets

Custom Ring Ceramic Magnets, Hard Ferrite Isotropic Ring Magnets, Ceramic 5 Ring Ferrite Magnets, Strontium Ferrite Anisotropic Magnets, Hard Ferrite Ring Shaped Radial Magnets, Sintered Ceramic Loundspeaker Magnet, Customized Magnetic Rings China Factory

Custom Ring Ceramic Magnets Features:
Part No.: HS-FMR
Material: Ferrite/Ceramic magnet
Shape: ring
Grade:Y30,Y25, Y35, Y33, Y40, C5, C8, C1, etc.
Magnetic properties: Hcj,Hcb,BH,Br,BHmax,working temperature
Tolerance: ±2%
Plating : None
Operating Temp(Max).: 80℃ （176℉）
Maximum Br: 3850Guass
Magnetized Direction: Magnetized through thickness Other size and grade are available on request
Application:widely used in sensor,speakers,reed switches,motor,rotor,wind turbines/generators,AC/DC motors,drive motors,servo motors etc
Magnetization directions:by Axial or by radial

External D	Opposite sex product: D± 2% D ± 0.1mm	D±0.1mm
	Homosexual products: D±1.5% and D ± 2%
Inside diameter d	Opposite sex product:d±2%	d±0.1mm
	Homosexual products:d±1.5%and d±2%
ThicknessH	H±1.0mm	H±0.1mm

Ring Ferrite Magnets—As important parts of magnetic materials, hard ferrite materials play a heavyrole in electronic industry, electronic information industry, car industry, motorcycle industry etc. meanwhile, they are also widely used in medical treatment, mining and metallurgy, industrial automation, oil energy industry and civil industry. ferrite magnet, ferrite magnets, bonded ferrite magnet, barium ferrite magnet, hard ferrite magnet, sintered ferrite magnet, bonded ferrite injection magnet

Ceramic (ferrite) magnets are composed of SrO or BaO and Fe2O3. They are charcoal gray in color and usually appear in the forms of discs, rings, blocks, cylinders, and sometimes arcs or segments for motors.

Applications of Ceramic Magnets:
• Speaker magnets
• DC brushless motors
• Magnetic Resonance Imaging (MRI)
• Magnetos used on lawnmowers and outboard motors
• DC permanent magnet motors (used in cars)
• Separators (separate ferrous material from non-ferrous)
• Used in magnetic assemblies designed for lifting, holding, retrieving and separating
• Magnetic Door Catcher
• Instrument and Meters
• Toys
• Arts and crafts

Attributes of Ceramic Magnets:
• Least expensive material compared to alnico and rare earth magnets
• High intrinsic coercive force
• Available in simple shapes only due to manufacturing process
• Lower service temperature than alnico, greater than rare earth
• Lower energy product than alnico and rare earth magnets
• Most common grades of Y25,Y30,Y30H-1,Y30H-2,Y32,Y33 ceramic are 1, 5 and 8 (1-8 possible)

Tolerances:
For as pressed material, tolerance on the thickness (direction of magnetization) is ± .005inch. Other dimensions are ± 2% or ± .010inch, whichever is greater. Ferrite Anisotropic Ring Magnets

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Imperial

Model. No.	Dimensions (mm)DdT	Model. No.	Dimensions (mm)DdT
FMR-001	D8 × d4 × 3	FMR-002	D10.2 × d6 × 9
FMR-003	D12 × d4 × 12	FMR-004	D12 × d4 × 24
FMR-005	D13 × d4.5 × 20	FMR-006	D14.6 × d8 × 12
FMR-007	D15 × d4.5 × 20	FMR-008	D15 × d4.5 × 28
FMR-009	D16 × d7 × 4	FMR-010	D18 × d5 × 8
FMR-011	D18 × d7 × 6	FMR-012	D18 × d6 × 24
FMR-013	D18 × d6 × 40	FMR-014	D18.3 × d6 × 32
FMR-015	D19 × d6 × 30	FMR-016	D21 × d7 × 32
FMR-017	D22 × d8 × 45	FMR-018	D23.4 × d11 × 8
FMR-019	D23.4 × d12 × 9	FMR-020	D25 × d8 × 50
FMR-021	D25.6 × d17 × 20	FMR-022	D26 × d10 × 9
FMR-023	D28 × d8 × 8	FMR-024	D30 × d10 × 60
FMR-025	D32 × d18 × (5-8)	FMR-026	D35 × d18 × (6-8)
FMR-027	D39 × d22.5 × (7-10)	FMR-028	D40 × d19 × (6-10)
FMR-029	D40 × d22 × (6-10)	FMR-030	D45 × d19(22) × (6-10)
FMR-031	D50 × d22 × (6-12)	FMR-032	D50 × d24 × (6-12)
FMR-033	D55 × d24 × (6-12)	FMR-034	D55 × d26 × (6-12)
FMR-035	D60 × d24 × (8-16)	FMR-036	D60 × d30 × (8-16)
FMR-037	D60 × d32 × (8-16)	FMR-038	D65 × d32 × (6-16)
FMR-039	D70 × d32 × (8-18)	FMR-040	D70 × d45 × (8-18)
FMR-041	D71.1 × d32.5 × 15	FMR-042	D72 × d32 × (8-18)
FMR-043	D75 × d32 × (10-15)	FMR-044	D75 × d40 × (10-15)
FMR-045	D80 × d32 × (10-20)	FMR-046	D80 × d40 × (10-20)
FMR-047	D80 × d60 × (10-20)	FMR-048	D85 × d32 × (8-20)
FMR-049	D85 × d44 × (8-20)	FMR-050	D85 × d45 × (8-20)
FMR-051	D90 × d32 × (10-18)	FMR-052	D90 × d35 × (10-18)
FMR-053	D90 × d45 × (10-18)	FMR-054	D90 × d50 × (10-18)
FMR-055	D100 × d45 × (12-20)	FMR-056	D100 × d50 × (12-20)
FMR-057	D100 × d60 × (12-20)	FMR-058	D110 × d60 × (15-20)
FMR-059	D110 × d62 × (15-20)	FMR-060	D119 × d56 × (14-20)
FMR-061	D119 × d60 × (14-20)	FMR-062	D116 × d56.8 × (15-20)
FMR-063	D116 × d60 × (15-20)	FMR-064	D120 × d45 × (12.5-20)
FMR-065	D120 × d60 × (12.5-20)	FMR-066	D126 × d60 × (12.5-20)
FMR-067	D126 × d65 × (12.5-20)	FMR-068	D128.3 × d58.8 × (15-20)
FMR-069	D133.3 × d59 × (15-20)	FMR-070	D135 × d60 × (15-20)
FMR-071	D140 × d62 × (12.5-20)	FMR-072	D140 × d65 × (12.5-20)
FMR-073	D140 × d75 × (12.5-20)	FMR-074	D145 × d70 × (20-24)
FMR-075	D145 × d75 × (20-24)	FMR-076	D156 × d60 × (20-25)
FMR-077	D156 × d80 × (20-25)	FMR-078	D165 × d86.4 × (15-25)
FMR-079	D169 × d85 × (20-25)	FMR-080	D180 × d80 × (20-25)
FMR-081	D180 × d85 × (20-25)	FMR-082	D180 × d95 × (20-25)
FMR-083	D190 × d89 × (20-25)	FMR-084	D190 × d90 × (20-25)
FMR-085	D200 × d86 × (20-25)	FMR-086	D211 × d89 × (20-25)
FMR-087	D210 × d110 × (20-25)	FMR-088	D220 × d110 × (20-25)

The above size is suitable for customer’s Magnetic Grade, Dimension tolerance: D ± 2%, d ± 1.5%, h ±0.15mm

Metrics

Sintered Ferrite Magnet Performance and Grade

Grade	(Br)		(HcB)		(HcJ)		(BH)max
Grade	mT	KGauss	KA/m	KOe	KA/m	KOe	KJ/m3	MGOe
Y10T	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	360~400	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-1	360~390	3.60~3.90	200-250	2.51-3.14	225-255	2.83-3.20	23.0-28.0	2.9-3.5
Y26H-2	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
Y28H-1	380~400	3.80~4.00	240-260	3.01-3.27	250-280	3.14-3.52	27.0-30.0	3.4-3.8
Y28H-2	360~380	3.60~3.80	271-295	3.40-3.70	382-405	4.80-5.08	26.0-30.0	3.3-3.8
Y30H-1	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
Y30H-2	395~415	3.95~4.15	275-300	3.45-3.77	310-335	3.89-4.20	27.0-32.0	3.4-4.0
Y32	400~420	4.00~4.20	160-190	2.01-2.39	165-195	2.07-2.45	30.0-33.5	3.8-4.2
Y32H-1	400~420	4.00~4.20	190-230	2.39-2.89	230-250	2.89-3.14	31.5-35.0	3.9-4.4
Y32H-2	400~440	4.00~4.40	224-240	2.81-3.01	230-250	2.89-3.14	31.0-34.0	3.9-4.3
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
Y33H	410~430	4.10~4.30	250-270	3.14-3.39	250-275	3.14-3.45	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

Custom Ring Ceramic Magnets