Magnetisation Grade:         N50
Material: Neodymium-Iron-Boron (NdFeB)
Magnet ID:              NR-90308-N50-Zn
Plating / Coating:   Zinc (Zn)        
Shape:         Ring  
Ring Magnet Size: 
Ring Total Diameter (D):      90 mm
Ring Inner Diameter (d):     30 mm
Ring Total Height (H):        8 mm
Tolerance:         ±0.05 mm
Magnetisation Direction:    Axial  /  Radial   
Residual Magnetic Flux Density (Br): 1400-1450 mT (14.0-14.5 kGs)
Energy Density (BH)max:             382-406 KJ/m³  (48-51 MGOe) 
Coercivity Force (Hcb):              ≥ 796 kA/m ( ≥ 10.0 kOe)  
Intrinsic Coercivity Force (Hcj):    ≥ 876  kA/m ( ≥ 11 kOe)   
Maximum Operation Temperature: 60 °C 
Delivery Time:           14-35 days   

Customized Neodymium Magnets
Most of our magnets are customized. They are produced for customers' specific using, like arc, tile, square, cylinder and magnetic ring with various sizes. Common specification samples will be available in stock for your testing first.
Applications
Security systems, Magnetic separators, Magnetic resonance imaging, Health bandages and plasters, Specialty door catches, Filters & strainers, Sensors, Speakers, Microphones/earphones, High performance motors, Brushless motors, Micro motor, servo motors, VCM(voice coil motor), Automobiles, Magnetic couplings, Magnetic Chucks, Magnetic toys, Magnetic tools, Other magnetic applications
9.Performance of Neodymium magnets