Big Ring Neodymium Magnet for Car Speaker

• Shape: Disc Ring Shape
• Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
• Coating: Nickel
• Grade: N50
• Type: Permanent Magnet
• Composition: NdFeB Magnet
• Model NO.: N35-N50/ D085
• Size: D50X15
• Working Temperature: Max 120 Oc
• Transport Package: Carton
• Specification: from35-52
• Trademark: eastar
• Origin: China, Ningbo
• HS Code: 8505111000
• Production Capacity: 500ton/Year

Product Description

Neodymium permanent Disc  Ring magnets:

1. Materials: Sintered NdFeB / Neodymium magnet
2. Magnet grade:N35,N38,N40....N52, H, SH, UH, EHseries for optional.
3.Surface treatment: Ni, Ni + Cu + Ni, Zn, epoxy, gold, etc.
4. Size: From diameter 1mm up to 80mm, thickness from 0.5mm up to 30mm.
5. Processing tolerance: +-0.05mm

Magnet Parameter data sheet:

Parameter	unit	Standard Data
Curie Temperature(Tc)	ºC	310-380
Maximum Operating Temperature(Tw)	ºC	80-200
Hardness	Hv	620
Electrical Resistivity	Ω.CM	1.8X10-4 ~2.0X10-4
Density(D)	g/cm3	7.5~7.65
Recoil Permeability	µ rec	1.05
Magnetization Field Strength(Hs)	KOe	>  30
	KA/m	>  2400
Bending Strength	Mpa	295~345
Temp. Coefficient of Br (aBr)	%/ºC	-0.11~ -0.12
Temp Coefficient of Hcj (aHcj)	%/ºC	-0.5~ -0.7

Applications of neodymium magnets:
1) Servomotor, step motor, DC motor and linear motor
2) Loudspeaker, headphone, earphone and microphones
3) Holding system equipment
4) Medical facility
5) Sound device
6) Wind power
7) VCM, MRI
8) Mobile accessory
9) Research and development, as well as many other applications

Company Profile

Test Equipment & Workshop
 • Demagnetization Curves & Outgoing Inspection Report for each shipment.
 

Packaging & Shipping

Standard Packaging
•  Vacuum packaging for all Neodymium magnets and Neodymium magetic assemblies.
• Shielding box and wooden box to protect the Neodymium magnets during shipping.

Shipping Methods 
• Contract price with FedEx, DHL, UPS and TNT to minimum your shipping cost.
• Experienced shipping forwarder for Ocean and Air shipments.

FAQ