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- Specification
Magnets for window-rolling motors are applicable for all cars based on Y30H-3 materical grade.
Ferrite Magnet Grade Equivalent
Item
Grade
Br T(GS)
HCB
kA/m(kOe)
HCJ
kA/m(kOe)
(BH) max
kJ/m³(MGOe)
IEC standard
IEC60404-8-1: 2001
Hard ferrite 32/25 SI-1-9
≥0.41
≥240
≥250
≥32.00
≥4100
≥3016
≥3142
≥4.02
Hard ferrite 24/35 SI-1-10
≥0.36
≥260
≥350
≥24.00
≥3600
≥3267
≥4398
≥3.02
Hard ferrite 25/38 SI-1-12
≥0.38
≥275
≥380
≥25.00
≥3800
≥3456
≥4775
≥3.14
Hard ferrite 31/30 SI-1-13
≥0.41
≥295
≥300
≥31.00
≥4100
≥3707
≥3770
≥3.896
NIDE
Standard
Q/74690217-4.1-2004
JC-Y3932
0.380-0.400
230-275
235-290
27.8-32.5
(3800-4000)
(2890-3456)
(2953-3644)
(3.49-4.10)
JC-Y3939
0.385-0.4000
270-290
280-320
28.5-31.8
(3800-4000)
(3391-3644)
(3518-4021)
(3.58-4.00)
JC-Y4041
0.395-0.415
275-295
310-340
28.2-32.0
(3950-4150)
(3456-3707)
(3895-4272)
(3.54-4.02)
JC-Y4127
0.400-0.424
200-225
205-228
30.0-33.6
(4000-4240)
(2514-2827)
(2577-2865)
(3.77-4.22)
JC-Y4231
0.410-0.430
220-260
255-270
31.8-35.5
(4100-4300)
(2765-3267)
(2827-3391)
(4.00-4.46)
JC-Y3744
0.360-0.380
265-288
330-360
24.0-28.0
(3600-3800)
(3330-3620)
(4147-4524)
(3.02-3.53)
JC-Y3849
0.370-0.390
271-305
370-400
26.0-30.2
(3700-3900)
(3405-3833)
(4649-5026)
(3.27-3.80)
JC-Y4240
0.410-0.430
291-314
306.1-330
32.0-35.4
(4100-4300)
(3657-3946)
(3846-4147)
(4.02-4.45)
Physical characteristics of permanent ferrite& technical property
Item
Symbol
Unit
Value
Note
Temperature range
—
℃
-40~+80
Expand coefficient
αR
K-1
7~15X10-6
Density
d
g/cm³
4.5~5.1
Resistivity
p
Ω·cm
104 ~ 108
Curie temperature
θc
℃
460~480
Temperature coefficient of remanence
αBr
K-1
-(0.18~0.20)%
0~100
Temperature coefficient of coercive force
αHCJ
K-1
(0.20~0.50)%
0~100
Recoil permeability
μ
—
1.05~1.30
Hardness
Hv
—
480~580
Information needed for magnet inquiry
It will be better if customer could send us detailed drawing including below information.
1. Magnet drawing
2. Magnet material
2. Magnet dimension: width, thickness, tolerance.
3. Magnet grade
4. Magnet applications
5. Required quantity: normally its weight or quantity
6. Other technical requirement.
If you are not sure which grade is proper, please contact our engineer. We can also customize according to your needs
We can offer a variety of NdFeB Magnet and Ferrite Magnet, If you need special magnetic tiles, we can also customize according to your needs.
About Motor component and accessories
NIDE can supply the full range of electric motor components such as commutator, ball bearing, thermal protector