Our tiny magnets / small strong magnets/micro magnet / small magnet is widely used in micro motor, micro meter, optical communication, quartz watch, instrumentation, inductor, medical devices, electric-acoustic, digital cameras motor, car dashboard, sensor, and other fields.
Below is our regular small strong magnets/micro magnet / small magnet product list. Great Magtech Electric is capable to provide micro precision small strong magnets/micro magnet / small magnet with customized sizes and shapes.
| Rotor Tiny Magnets / small strong magnets/micro magnet / small magnet for Quartz Watch Movement |
| Material |
OD(mm) |
ID(mm) |
Thickness(mm) |
Magnetization direction |
Tolerance(mm) |
Coating |
| SmCo |
0.8-0.2 |
0.25-0.60 |
0.35-0.60 |
Diametrical |
+/-0.005- +/-0.015 |
No Coating |
| NdFeB |
0.8-0.2 |
0.25-0.60 |
0.35-0.60 |
Diametrical |
+/-0.005- +/-0.015 |
Parylene C, Nickel Coated |
| Ring Small Magnets / small strong magnets / micro magnet / for Fiber Optics |
| Material |
OD(mm) |
ID(mm) |
Thickness(mm) |
Magnetization direction |
Tolerance(mm) |
Coating |
| SmCo |
1 |
0.5 |
0.35 |
Axial |
+/-0.01- +/-0.02 |
No Coating, Nickel Coating |
| Ring Small Strong Magnets/micro magnet / small magnet for Mobile Motor (Thin wall and longhole) |
| Material |
OD(mm) |
ID(mm) |
Thickness(mm) |
Magnetization direction |
Tolerance(mm) |
Coating |
| SmCo |
2.5 |
1.2 |
2.8 |
Diametrical |
+/-0.01 |
No Coating, Nickel Coated |
| NdFeB |
2.5 |
1.2 |
2.8 |
Diametrical |
+/-0.01 |
No Coating, Nickel Coated |
| Ring Micro Magnets / small strong magnets / small magnet for Motormeter Motor |
| Material |
OD(mm) |
ID(mm) |
Thickness(mm) |
Magnetization direction |
Tolerance(mm) |
Coating |
| SmCo |
1.6 |
0.6 |
0.6 |
Diametrical |
+/-0.01 |
Nickel Coated |
| NdFeB |
1.6 |
0.6 |
0.6 |
Diametrical |
+/-0.01 |
Nickel Coated |
| Micro Magnets / small strong magnets / small magnet for Sensor and others |
| Material |
Spec |
Size |
Magnetization direction |
Tolerance(mm) |
Coating |
| SmCo |
Cylinder |
D*H |
0.2 |
Axial |
+/-0.005 |
Nickel Coated, Parylene C, Gold Coated |
| NdFeB |
Ring |
D*d*H |
0.2 |
| |
Tile |
R*r*H*T*W |
0.2 |
| |
Rectangle |
W*L*H |
0.2 |
| |
Holed Rectangle |
L*W*H*d |
0.2 |
Packaging of Tiny Magnets / small strong magnets / micro magnet / small magnet:
Our tiny magnets / small magnets /small strong magnets are carefully handled to prevent damage during storage and transportation and to preserve the quality of our products in their original condition.
Other Names of Tiny Magnets / small strong magnets/micro magnet / small magnet:
Small Magnet
small strong magnets
micro magnet
Micro Precision Magnets
Project 1: small strong magnets/micro magnet / small magnet for stepper motor in watch
The stepper motor in the watch comprises the stator made from soft iron and which houses the rotor or armature, which is a permanent tiny magnet. Each pulse from the coil magnetizes the stator, creating a magnetic field that opposes that of the permanent magnet in the rotor, causing it to rotate by 180 degrees. The next pulse, whose polarity is now reversed, completes the process by inducing a further 180-degree turn of the rotor.
Project 2: Tiny magnets / small strong magnets/micro magnet / small magnet in the MegaQuartz Watch
Upon pushing the stem back into neutral position three tiny magnets in a double-layer intermediate setting wheel are attracted by a steel setting gear and automatically correct the final position of the hour hand so that it corresponds perfectly with the minute.
The coil in the motor module is securely hidden in between two small strong magnets/micro magnet / small magnet so proceed by removing (sliding) the magnets from the motor and check the resistance of the coil. Dip the motor in alcohol for a longer while and with a small gentle brush remove any battery residue or dirt that might be jamming the escapement.
Tiny Magnets / small strong magnets/micro magnet / small magnet in LONGINES ULTRA-QUARTZ
The 4.3kOhm motor coil was probably a quick-fix and was simply glued to the torsion bar. This solution did not prove reliable thus finding a working watch is a real miracle. The coil is totally exposed and vibrates in between two micro magnets / small strong magnets / small magnets - the least amount of shock during wear will cause the coil to move and scratch its surface in the small magnetic gap.
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