Magnets for DC motors
Rubber magnets are made of bonded ferrite magnet powder ,compound rubber and other materials. By extruding, rolling or injecting, the combination can be made into soft, plastic and flexible magnets with different shapes such as strip, coil , sheet, and other complicated shapes. They are widely used in micro motor, fridge, disinfecting cupboard, toy, stationery, ad., etc.
Typical Physical Properties
| Tensile strength |
Kg/cm 3 |
20 < f<100 |
| Elongation |
% |
60 < l <300 |
| Hardness |
Hv |
95+/-5 |
| Density |
G/cm 3 |
3.70+/-0.2 |
| Saturation Field Strength |
KA/m |
10
800 |
| Flexibility |
No crack when twisting around attesting bar dia. 20-dia. 60 |
| Twist |
No crack at twist with 180 0 twice |
| Material |
Br
MT(G) |
HCB
KA/m(Oe) |
HCJ
KA/m(Oe) |
(BH)max
KJ/m 3 (MGOe) |
| YN-5T |
140-150
(1400-1500) |
90-120
(1625) |
130
(1625) |
4.0-5.6
(0.5-0.7) |
| YN-8 |
160-185
(1600-1850) |
120-140
(1875) |
150
(1875) |
5.6-7.0
(0.7-0.89) |
| YN-10 |
200-210
(2000-2100) |
145
(2000) |
160
(2000) |
8.0-9.6
(1.0-1.2) |
| YN-11 |
230-245
(2300-2450) |
160
(2188) |
175
(2188) |
10.0-11.0
(1.25-1.39) |
| YN-13 |
250
(2500) |
160
(2275) |
182
(2275) |
11.2-12.6
(1.40-15.1) |
| YN-15 |
260
(2600) |
172
(2450) |
196
(2450) |
12-12.8
(1.5-1.6) |
| YN-11H |
230-240
(2300-2400) |
170
(2500) |
188
(2500) |
10-11.0
(1.25-1.34) |
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