Ceramic Ring Magnets

Ceramic Ring Magnets, Ferrite Ring Speaker Permanent Magnets, Ceramic Rings for Speaker, Loundspeaker Hard Ferrite Ring Magnets, Audio Speaker Sintered Ceramic Magnets China Supplier

Ceramic Ring Magnets Features:
Part No.: HS-FMR
Material: Ferrite/Ceramic magnet
Shape: ring
Grade:Y30,Y25, Y35, Y33, Y40, C5, C8, C1, etc.
Magnetic properties: Hcj,Hcb,BH,Br,BHmax,working temperature
Tolerance: ±2%
Plating : None
Operating Temp(Max).: 80℃ （176℉）
Maximum Br: 3850Guass
Magnetized Direction: Magnetized through thickness
Other size and grade are available on request
Application:widely used in sensor,speakers,reed switches,motor,rotor,wind turbines/generators,AC/DC motors,drive motors,servo motors etc
Magnetization directions:by Axial or by radial

Dimension range of Ring Magnet
Outer diameter: 5.0mm ~ 180mm
Inner diameter : 2.0mm ~ 150mm
Thickness: 1.0mm ~ 25mm

Tolerance of Ferrite Ceramic Ring Magnets
Standard tolerance : +/-2%
Also stricter tolerance are possible if specially requested.

Surface coating of Ferrite Magnet
Ferrite Magnet,also called Ceramic magnet, there is no surface coating. They do not
Require surface treatment.

Packaging and Delivery
Packaging: Neutral box packaging, inner box , foam inside and other protection, to ensure
safely of transportation.
Delivery time: 8 ~ 20days, depend on customer’s order quantity.

Ferrite Ceramic Ring Magnets are used in loundspeaker – Speakers are everywhere, and most of them use the same old principle of a permanent magnets coupled with an electromagnetic coil.
Sub-woofers, woofers, mid-range speakers, tweeters, coaxial drivers… all are including at least one permanent magnet.

For the speaker to work and produce the sound we hear, a cone of soft material (plastic, rubber…) is coupled with an electro magnetic coil.
When current waves are pulsed within the coil, it produces a magnetic field that reverses direction as the current switches to positive or negative sign.

The coil, is then attracted or repelled by a ring permanent magnet. This movement is then amplified by the soft cone to produce waves of air, waves that are interpreted as a sound by human ears. The frequency of the vibration of the coil in front of the permanent magnet will affect the pitch of the sound. The amplitude of these vibration will govern the volume.

For Speakers, A Ferrite Ring Magnet Is Commonly Advised
One can easily understand the importance of the quality of the permanent magnet in the speakers. It must be able to provide a strong field while having reduced dimensions and a relatively low cost.

We at HSMAG have been designing permanent ring magnets for more that a century and took part in the design of the early speakers and drivers.
Though we generally supply ferrite ring magnets when it comes to speakers applications, we are always innovating in this field and trying new materials and design to supply our customers with the best speakers rings.

Please contact us and we will be happy to study your application with you.