China permanent magnet manufacturer:

N48 NdFeB Ring Magnet D7mm*3mm*3mm

Port: Ningbo or Shanghai, China 
Production Capacity: 500000000PCS/Season
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Magnetization Direction: Axial/Radial/Multi-Poles Magnetization
Color: Silver, golden
Coating: Nickel,Copper,Gold,Silver,Zinc
Grade: N35-N52
Shape: Disc,block,arc
Material: Sintered Neodymium-Iron-Boron
HS Code: 8505111000
Tolerance: +/- 0.05mm
Transport Package: Carton, Wood Case, Anti-Magnetized Package
Sample: Avaliable
OEM: Acceptable
Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet


Specification of N48 NdFeB Ring Magnet D7mm*3mm*3mm
Texture of material N48
Remanence br 1.382T 13.82KGs
Coercivity HCB 1005 kA/m 12.63kOe
Intrinsic coercivity Hcj 1033 kA/m 12.98kOe
Maximum magnetic energy product (BH) max 45.95MGOe
Size Diameter 7mm * thickness 3mm – mesopore 3mm
Tolerance The diameter is ± 0.05mm and the thickness is ± 0.1mm
Coating Nickel copper nickel
Magnetization direction Axial magnetization
Surface magnetic field 4700GS
Pull 0.25kg
Working temperature The maximum working temperature is 80 ℃
Single weight 0.72g

Magnetic Characteristics of N48

Br (Residual Induction) Br (Residual Induction) Hcb (Coercive Force) Hcb (Coercive Force) Bhmax (Maximum Product Energy) Bhmax (Maximum Product Energy) Hcj (Intrinsic Coercive Force) Hcj (Intrinsic Coercive Force)
mT KGs KA/m KOe KJ/m³ MGOe KOe KA/m
1380-1430 13.8-14.3 836-915 10.5-11.5 366-390 46-49 ≥ 12 ≥ 955

Thermal Characteristics of N48

Max Operating Temp Curie Temp Reversible Temp Coeff Rev Temp Coeff
°C %/°C Br (TC a(Br) %/°C) Hcj (Tc a(Hcj) %/°C)
80 310 -0.12 -0.75

Mechanical/Physical Characteristics of N48


China NdFeB Ring Magnets Manufacturer supplies N48 NdFeB ring magnets, block countersunk magnets, arc countersunk magnets for scientific experiments or for industrial applications.

This product is not a toy and is not to be used by children. This product is to be used for scientific experiments or for industrial applications. This product contains strong Neodymium magnet(s) that can be harmful or fatal if swallowed. Strong Neodymium magnets are fragile, they are brittle and will break or chip if they hit a hard surface or are snagged together. Always use the utmost care when handling Neodymium magnets.

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