Available Sizes

  • T= Thickness
  • OD = Outer Diameter
  • ID= Inner Diameter
OD (mm) ID (mm) T (mm) Weight (gms)   OD (mm) ID (mm) T (mm) Weight (gms)
32 16 6 18 53 24 7 61
32 16 8 24 53 24 8 78
32 18 6 17 53 24 9 81
32 18 8 20 53 24 10 87
36 18 6 23 53 24 10.5 95
36 18 8 31 53 24 11 97
36 18 9 35 53 25 8 68
39 22.5 7 28 53 25 9 78
39 22.5 9 36 53 25 11 96
39 22.5 11 44 60 24 7 85
45 18 7 46 60 24 8 94
45 18 8 52 60 24 10 119
45 18 9 59 60 24 13 148
45 22 7 43 60 24 14 169
45 22 7.5 45 60 32 7 71
45 22 8 48 60 32 8 92
45 22 9 55 60 32 10 101
45 22 11 67 60 32 13 114
51 24 8 65 60 32 14 140
51 24 9 73
OD (mm) ID (mm) T (mm) Weight (gms)
61 32 7 71
61 32 8 92
61 32 10 101
61 32 13 114
61 32 14 140
72 32 9.5 155
72 32 10 165
72 32 12 196
72 32 13 215
72 32 14 232
72 32 15 249
86 32 10 254
86 32 15 381
91 36 11 299
91 36 15 408
91 36 16 436
91 36 17 466
100 57 15 456
100 57 17 489
100 57 20 537
121 42 17 860
121 42 20 1012
121 57 17 761
121 57 20 895
134 57 17 982
134 57 20 1155

Permanent Ferrite         Magnets:Ring

[Name] Permanent Ferrite Magnet:Ring
[Description] Widely used in various speakers.
[Magnetic Properties] Y20,Y25,Y30,Y30BH,Y35
[Others]

Magnetic Properties

Material Iso/Anisotropic Remanence Coercivity Intrinsic Coercivity Max.Energy Product
Br(mT) Br(Gs) bHc(KA/m) bHc(Oe) iHc(KA/m) iHc(Oe) (BH)
max(KJ/m3) 		(BH)
max(MGOe)
Y10T isotropic
200 2000 128-160 1600-2000 128-160 1600-2000 6.4-9.6 0.8-1.2
Y20 Anisotropic 320-380 3200-3800 128-192 1600-2400 140-180 1750-2250 18.36-21.5 2.3-2.7
Y25 Anisotropic 360-39 3600-3900 135-170 1700-2140 140-200 1760-2510 22.5-28.0 2.8-3.2
Y30 Anisotropic 380-400 3800-4000 175-210 2200-2640 180-220 2260-2770 26.0-30.0 3.3-3.8
Y30BH Anisotropic 380-400 3800-4000 230-275 2890-3460 235-290 2950-3650 27.0-32.5 3.4-4.1
Y35 Anisotropic 400-420 4000-4200 160-190 2010-2380 165-195 2070-2450 30.0-33.5 3.8-4.2