Standard Rare Earth Ring Permanent SmCo Magnet

Standard Rare Earth Ring Permanent SmCo Magnet YXG-28, Customer Magnetic Ring for Motor, Samarium Cobalt Sound Speaker Assembly, OEM SmCo Rare Earth ring speaker magnets for headphone earphone headset, High Work Temp Permanent Motor Generator Rotor Magnet, Super Strong SmCo magnets China Supplier

Standard Rare Earth Ring Permanent SmCo Magnet YXG-28 Item No. MPCO-SMOS  series
Customzied Specific Requirements
OEM or ODM service: Accept
Dimension: Customized size
Custom Grade: SmCo5,  Sm2Co17
Magnetization direction: Thickness, Length, Axially, Diametre, Radially, Multipolar
Surface Treatment: UNCOATED, Silver, Gold, Zinc, Ni-cu-Ni. Epoxy etc.
Tolerance: +/-0.02 – 0.05mm

Samarium Cobalt (SmCo) Magnets
Extremely strong rare earth magnets, Samarium Cobalt magnets (SmCo) are composed of samarium, cobalt and iron. Not sure if samarium cobalt is the best material for your application? Review our permanent magnetic materials comparison for more information.

Manufacturing – In general, the elements are melted together and milled into a powder that is dry-pressed to shape in the presence of a magnetic field. The material is then sintered, aged, ground to dimension, magnetized and tested. They are called “rare earth” magnets because the elements of samarium cobalt are classified as such in the lanthanides section of the Periodic Table of the Elements.

Applications of Samarium Cobalt Magnets
Computer disc drives
Sensors
Traveling wave tubes
Linear actuators
Satellite systems
Motors where temporary stability is vita
Servo-Motors
Transducers
Watch
Positional detector
Generators

Samarium Cobalt Sound Speaker Magnet Ring Assembly

Attributes of Samarium Cobalt Material
High resistance to demagnetization
High energy (magnetic strength is strong for its size)
Good temperature stability
Expensive material (cobalt is market price sensitive)
Excellent corrosion resistance

RING MAGNET:
General size range: OD: 1.5 – 160mm, ID: 0.5 – 150mm, H: 0.3 – 150mm
Max Ring: OD160 x ID150 × H50mm( Large OD/H ratio), OD60 x ID40 x H150mm(Large H/OD ratio)
Min Ring: OD1.5 x ID0.5 x H0.3mm
Note: For large rings, too thin thickness or wall thickness is not allowed, because the great brittleness of SmCo easily causes fracture when assembling. Please contact technical support for details.

High Grade Rare Earth Ring SmCo Headphone Magnets

The Role Of Magnets In Headphones
Magnets play a huge role in most headphones. This is because most headphones require a magnetic field for the driver to function properly.
The headphone driver is the key transducer component that turns the electrical audio signals into sound waves for our enjoyment (or displeasure). The simple fact is that most headphone drivers rely on magnets to effectively convert energy.
The role of magnets is to produce a permanent magnetic field that will attract and repulse the electrically charged diaphragm or the conductor that is controlling the diaphragm.
So to answer the question shortly, magnets are required if the diaphragm of a dynamic headphone is to move and produce any sound. Heat Resistant Samarium Cobalt Ring Magnet for Industry

Magnetic properties of Custom Shape SmCo: