Micro Thin Wall Magnet SmCo Ring
Material Sm2Co17
Samarium Cobalt magnetic ring, Sm2Co17 Magnet Ring (Epoxy Coating), Sm2Co17 Magnet Ring with Slot on N Pole, SmCo Micro Ring for Quartz Movement, MicroRing Thin Wall Long SmCo Ring Magnets
All kinds of micro permanent magnet ring is widely used in watches, optical communication, medical, precision machinery and other industries. Thin wall long hole features samarium cobalt magnetic ring is my company’s products, inner hole length to diameter ratio can reach those days, products can be thin wall thickness to 0.2 mm. Production, quality stable and reliable, and has been supporting in many world famous companies products.
Product details | |||||
Project | Outer diameter（mm） | The inner diameter（mm） | highly（mm） | Direction of magnetization | Material |
Basic dimensions | φ0.8-φ10.0 | φ0.2-φ3.0 | 0.2-15 | Custom | SmCo, NdFeB, Ferrite, Alnico and etc. |
Tolerance | ±0.005-±0.05 | ±0.01-±0.1 | ±0.005-±0.05 | ±1° | |
Samaryum Cobalt magnets are sintered magnets composed of samaryum and cobalt powder.
Colour hell grey. Density 8.2
HOLDING FORCE
Magnetic force is optimal when magnet is in contact with a mild steel frame, flat, clean and rather thick. It is lower with allied steels and cast iron (less 30% for cast iron).
It is lower in the presence of an air gap (space between the part to magnetize and the polar face of the magnet).
It is decreasing by 0.08% every degree C (see besides curve). This loss is reversible. anisotropic injection molded permanent magnets
INDUCTION ON SURFACE
The maximum value of induction in surface at 20°C is about 4000 Gauss for SmCo flat pot magnets and magnetic blocks.
This value is decreasing by 0.04% every degree C when temperature is increasing. It is a reversible loss.
MECHANICAL RESISTANCE
These ceramics are very fragile. They must be handled carefully.
RESISTANCE TO CHEMICALS
Samaryum Cobalt magnets must not be put in the proximity of hydrogen and chlorine.
Samaryum Cobalt magnets have a very high magnetic energy (BH Max).
There are 2 major families : SmCo5 and Sm2Co17.
The usual grade of our magnets is the most performing Sm2Co17 (max. 350°C working temperature).
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