Magnetisation Grade:         N40
Material: Neodymium-Iron-Boron (NdFeB)
Magnet ID:              NR-1246-N40
Plating / Coating:  Nickel (Ni-Cu-Ni) / Double Ni / Zinc (Zn) / Epoxy (Black/Gray) / Gold (Au)       
Shape:         Ring  
Ring Magnet Size: 
Ring Total Diameter (D):       12 mm
Ring Inner Diameter (d):        4 mm
Ring Total Height (H):        6 mm
Tolerance:         ±0.05 mm
Magnetisation Direction:    Axial  /  Radial   
Residual Magnetic Flux Density (Br): 1250-1280 mT (12.5-12.8 kGs)
Energy Density (BH)max:             302-326 KJ/m³  (38-41 MGOe) 
Coercivity Force (Hcb):              ≥ 907 kA/m ( ≥ 11.4 kOe)  
Intrinsic Coercivity Force (Hcj):    ≥ 955  kA/m ( ≥ 12 kOe)   
Maximum Operation Temperature: 80 °C 
Delivery Time:           14-35 days   

1.Any Shape/Grade/Coating
2.Specialize in big size,better consistency
3.US Patent/ISO 9001:2008/REACH/RoHS
4.Permanent Rare Earth Arc Motor Magnets Since 1994
Product Number:  NdFeB Permanent Rare Earth Arc Motor Magnets
Type:  Permanent  Composite:  Neodymium Magnet  Shape:  Arc-shaped 
Application:  Moto Magnet  Grade:  N,M,H,SH,UH,EH