Magnetisation Grade: N42M
Material: Neodymium-Iron-Boron (NdFeB)
Magnet ID: NR-18104-N42M
Plating / Coating: Nickel (Ni-Cu-Ni) / Double Ni / Zinc (Zn) / Epoxy (Black/Gray) / Gold (Au)
Shape: Ring
Ring Magnet Size:
Ring Total Diameter (D): 18 mm
Ring Inner Diameter (d): 10 mm
Ring Total Height (H): 4 mm
Tolerance: ±0.05 mm
Magnetisation Direction: Axial / Radial
Residual Magnetic Flux Density (Br): 1280-1320 mT (12.8-13.2 kGs)
Energy Density (BH)max: 318-342 KJ/m³ (40-43 MGOe)
Coercivity Force (Hcb): ≥ 955 kA/m ( ≥ 12.0 kOe)
Intrinsic Coercivity Force (Hcj): ≥ 1114 kA/m ( ≥ 14 kOe)
Maximum Operation Temperature: 100 °C
Delivery Time: 14-35 days
Type: Permanent Composite: NdFeB Magnet Shape: ring shaped
Application: Speaker Magnet Material: NdFeB Shape: Ring
Grade: N30-42 Size: Custom Coating: Zinc coating
Color: White Sample leadtime: 3-5 days Tolerance: 0.05-0.1mm
Application: Speaker, clothes Certificate: QS-9000
oduct Name: n52 big ring neodymium magnet for speakers
ISO/TS 16949 & ISO14001 & &QC080000 Certified.
Features:
1) φ3 up to 220mm
2) Up to N52 max.
3) Ni, Zn, NiCuNi, Gold, or Epoxy coated.
4) Max. Working Tempeture: 250 deg. C
5) Used in audio equipment, such as Loudspeakers, earphones, microphones,etc.