Neodymium Rare Earth Countersunk Ring Magnet

/Neodymium Rare Earth Countersunk Ring Magnet
  • Neodymium Rare Earth Countersunk Ring Magnet

Neodymium Rare Earth Countersunk Ring Magnet, N45 Ring NdFeB Magnet with Countersink, NdFeB Ring with Countersink Hole, Sintered Ring Magnet with Countersunk, Ring Magnet with 90 °Countersunk

Product Name: Neodymium Rare Earth Countersunk Ring Magnet
Model No:NCR-7042-N45
1. Powerful permanent pot magnet
2. High quality & best price
3. High working temperature
4. Good corrosion resistance
Original Manufacturer:HangSeng Magnetech
Solution:Customized your required material, size, coating, shape, grade, pull force and woking temperature
Origin:Ningbo, Zhejiang, China
Supply Ability:50000pcs/day
Applications:magnetic holding, lifting, antenna Mounting, positioning, retrieving and much more.

Neodymium Ring Countersunk Magnet, and channel magnets consist of a steel shell with a magnet sunken into one face.
Both arrangements give many advantages; pot magnets can be supplied with a tapped hole, a countersunk hole, a counter-bored hole, a threaded stud or a threaded collar while channel magnets are provided with pre-drilled holes, all for convenient mounting.
Magnetism is confined to one face only, where it is concentrated to give the maximum holding force possible for the size of the magnet.
Pot and channel magnets do not chip or crack with constant impacting onto a steel surface which is another large advantage.
Pot magnets can also be supplied with hooks and eyebolt attachments, ideal for hanging a variety of items.

Neodymium is a metal which is ferromagnetic (more specifically it shows antiferromagnetic properties), meaning that like iron it can be magnetized to become a magnet, but its Curie temperature (the temperature above which its ferromagnetism disappears) is 19 K (−254 °C), so in pure form its magnetism only appears at extremely low temperatures. However, compounds of neodymium with transition metals such as iron can have Curie temperatures well above room temperature, and these are used to make neodymium magnets.

Head actuators for computer hard disks
Erase heads for cheap cassette recorders
Magnetic resonance imaging (MRI)
Mechanical e-cigarette firing switches
Locks for doors
Loudspeakers and headphones
Magnetic bearings and couplings
Benchtop NMR spectrometers
Electric motors:
Cordless tools
Lifting and compressor motors
Synchronous motors
Spindle and stepper motors
Electrical power steering

  • Affordable price
  • Customized magnet is Available
  • Any payment accepted
  • Fast shipping, Worldwide delivery
  • Quality guaranteed
  • Offer free neo magnets solution

Product Range


Magnetisation Grade:         N45
Material: Neodymium-Iron-Boron (NdFeB), Neodymium and Steel
Magnet ID:              NCR-7042-N45
Plating / Coating:  Nickel (Ni-Cu-Ni)
Shape:         Ring with Countersunk Hole (countersink hole)
Countersunk Magnet Size:
Ring Total Out-Diameter (D):        70 mm
Ring Total Inner-Diameter (d):      42 mm
Ring Total Height (H):         8 mm
Small Hole Diameter (d1):     10 mm
Tolerance:         ±0.05 mm
Magnetisation Direction:    Axial  /  Radial
Residual Magnetic Flux Density (Br): 1320-1380 mT (13.2-13.8 kGs)
Energy Density (BH)max:             342-366 KJ/m³  (43-46 MGOe)
Coercivity Force (Hcb):              ≥ 923 kA/m ( ≥ 11.6 kOe)
Intrinsic Coercivity Force (Hcj):    ≥ 955  kA/m ( ≥ 12 kOe)
Maximum Operation Temperature: 80 °C
Delivery Time:           14-35 days

Technical Drawing