Gold Member Since 2014
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Ningbo Zhongyuan Magnet Co., Ltd.

NdFeB Magnet, Neodymium Magnet, Permanent Magnet manufacturer / supplier in China, offering Cheap Sintered NdFeB Magnets for Speaker with Zn Coating, Sintered Permanent Block NdFeB Neodymium Magnet with Phosphate Coating, N52 N50 Ni Plated Big Disc NdFeB Permanent Magnets and so on.

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Supplier Homepage Product Sintered Neodymium Magnet-Different Shape Disk/Ring Magnets Cheap Sintered NdFeB Magnets for Speaker with Zn Coating

Cheap Sintered NdFeB Magnets for Speaker with Zn Coating

Purchase Qty.:
(Pieces)
1,000-4,999 5,000+
FOB Unit Price: US $3 US $2.8
Purchase Qty. (Pieces) FOB Unit Price
1,000-4,999 US $3
5,000+ US $2.8
Get Latest Price
Production Capacity: 1500 Ton/Year
Transport Package: OEM Carton
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: 40H
  • Shape: Ring
  • Grade: 40h
  • Size: D72*D56*5
  • Working Temp: 80-220 Degree
  • Trademark: ZY Magnet
  • HS Code: 85051110
  • Application: Speaker Magnet, Industrial Magnet
  • Coating: Zinc
  • Material: Neodymium-Iron-Boron Magnet
  • Tolerance: +/-0.05mm
  • Delivery Time: Very Fast Delivery(15-25days)
  • Origin: Ningbo, China
Product Description
Sintered neodymium magnet are widely used in speaker, it provides a permanent magnetic
field for the speaker coil, which is embedded in the paper of the speaker cone. 
When theaudio signal flows throw the speaker coil, it generates a small magnetic field. This small
magnetic field is repelled to the permanent magnetic field. Thus the paper cone moves
away from or closer towards the back of the speaker. Hence as the strength of the audio
signal wiggles the paper cone wiggles back and forth, and you get sound waves that
match the audio signal. 
Ordinary ferrite magnet is mainly used for low-end headphones. Neodymium magnets
for high-end headphones, so it has better sound quality, good elasticity, good voice
performance, and accurate positioning of sound field. 


We can produce the NdFeB ring magnets in different sizes, different grades (strengths and temperature ratings), different coatings and in axial or diametric magnetization. 
There exits two styles "pure" rings and "countersunk" rings. The holes are centrally located. The countersunk ring allows for the magnet to be screwed onto another item.
Due to their shape, the ring magnets have a higher permeance coefficient than the same size disc magnet. 
This means they can resist demagnetization better, making them ideal for repulsive applications.
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