NdFeB Rare Earth Permanent Neodymium Magnet (N48)

• Shape: Ring Shape
• Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
• Coating: Zinc
• Grade: N38
• Type: Permanent
• Composition: NdFeB Magnet
• Size: D25*D3.5*2
• Tolerance: -0.05 ~ +0.05mm
• Transport Package: Carton
• Specification: from35-52
• Trademark: eastar
• Origin: China, Ningbo
• HS Code: 8505111000
• Production Capacity: 500ton/Year

Product Description

Neodymium permanent magnets rings:
Supply arc/segment magnets, magnetic tile for motor with high quality, competitive price and fast delivery.
Materials: Sintered NdFeB / Neodymium magnet
Surface treatment: Ni, Ni + Cu + Ni, Zn, epoxy, gold, etc.

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