20 x 4 x 7mm General NdFeB Ring Magnets N35 Ni

20 x 4 x 7mm General NdFeB Ring Magnets N35 Ni, High Performance Rare Earth Super Strong Licensed Sintered Neodymium Ring Magnet for Speaker Motor Sensor Rotor Craft Toy, Amazing Powerful Loundspeaker NdFeB Permanent Magnets China Wholesaler

Ø 20 x 4 x 7mm General NdFeB Ring Magnets N35 Ni Technical Specifications:
Item: NRN35-20-4-7
Grade: N35
Material: Neodymium (NdFeB)
Plating: Nickel
Shape: Ring
Dimension:
Outside Dia (D): 20 mm
Inner (d):  4 mm
Height (H): 7 mm
Tolerance: ±0.05 mm
Magnetisation Direction: Axial / Radial
Residual Magnetic Flux Density (Br): 1170-1220 mT (11.7-12.2 kGs)
Energy Density (BH)max: 263-287 KJ/m³ (33-36 MGOe)
Coercivity Force (Hcb): ≥ 868 kA/m ( ≥ 10.9 kOe)
Intrinsic Coercivity Force (Hcj): ≥ 955 kA/m ( ≥ 12 kOe)
Maximum Operation Temperature: 80 °C
Delivery Time: 14-35 days

Audio Speaker Permanent Neodymium NdFeB Magnet, High Performance ring amazing super strong neodymium ring magnets
Neodymium Magnets often offer improved performance over other magnets, depending on the application. Neodymium magnets (NdFeB magnets), when used in permanent magnet motors (PM motors) for example, can give reduced motor losses, higher motor efficiencies, a reduction in CO2 (carbon dioxide) emissions, reduced energy costs (by reduced energy usage), smaller motor designs, higher torque densities and improved overall performance.
Neodymium Magnets, because they have the highest Br and BHmax of any magnetic material, give the highest magnetic performance at ambient temperature of any magnetic material. Neodymium Magnets (NdFeB magnets) give the maximum performance from nimum magnet volume. Neodymium Magnets can give the strongest magnetic fields, the highest pull forces, the highest torques from any magnet (size for size) at ambient temperatures.
NdFeB magnets can be used at temperatures up to a maximum of 220/230 °C with correct magnet grade selection. As a rough guide – below 150 °C NdFeB magnets are generally more powerful than SmCo magnets; above 180 °C NdFeB magnets are generally less powerful than SmCo magnets.

Buy Neodymium magnets (NdFeB magnets)
Neodymium Magnets (NdFeB magnets) are the Strongest magnets available
Our China stocked Neodymium Magnets (NdFeB magnets) help give maximum performance from minimum size
Neodymium Magnets (NdFeB magnets) are usually NICKEL (Ni or NiCuNi) plated unless stated or requested otherwise
Neodymium magnets (NdFeB) have a maximum operating temperature of 80 °C for standard grades (Nxx e.g. N35, N42, etc), more for higher Hci grade types e.g.100 °C for NxxM, 120 °C for NxxH, 150 °C for NxxSH, 180 °C for NxxUH, 200 °C for NxxEH and 220/230 °C for NxxAH/VH
We can produce and supply Neodymium Magnets (NdFeB magnets) to nearly any grade, coating and shape upon request – contact us a quote!