Block Countersunk NdFeB Magnet

/Block Countersunk NdFeB Magnet
  • Block Countersunk NdFeB Magnet

Block Countersunk NdFeB Magnet, NdFeB Block Magnet with 90 °Countersunk, Countersunk Rectangle Magnet, Super Strong Countersunk Magnet, Permanent Countersunk Magnet, N40 Rectangular Magnet

Product Name:Block Countersunk NdFeB Magnet
Model No:NCB-28124-N40-Ni
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.

1, Custom-made dimension Sintered NdFeB Block with Countersink Hole
2, Strong pull force
3, High quality & low price
Magnet Details:
Material: Sintered Neodymium-Iron-Boron;
Temperature: the max operation temp is up to 220 degree centigrade
Grade:N33-N52,33M-48M,33H-48H,30SH-45SH,30UH-38UH and 30EH-35EH;
Shape: ring,block,disc,bar and so on;
Size: according to customers’ request;
Coating: Ni, Zn, gold, copper, epoxy and so on;
Process Flow: Raw material—–Mixing—–Melting—–Powder—–Pressing—–Sintering—-MagneticTesting—–Cutting & Grinding—–Coating—–Inspection—–Packing and shipping
Magnet Application:
Wind Power
Computers and Peripherals
Magnetic Assemblies
Motion Control
Research and Development
Medical Device and Diagnostics
Home appliance
Other magnetic applications or you can find new application according to your design
Our Services
Export Advantage:
All inquiries, questions and emails will be replied within 24 hours.
Samples and small quantity are available.
Stock material for stable production.
Most favorable Price is available.
Excellent shipping forwarder to help to delivery magnet
Flexible Payment items include T/T in dvance and western union and L/C at sight or others
Quick deliery time & precise size tolerance
Good quality and assured service

A neodymium magnet (also known as NdFeB, NIB or Neo magnet), the most widely used type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium, iron and boron to form the Nd2Fe14B tetragonal crystalline structure. Developed in 1982 by General Motors and Sumitomo Special Metals, neodymium magnets are the strongest type of permanent magnet commercially available. They have replaced other types of magnets in the many applications in modern products that require strong permanent magnets, such as motors in cordless tools, hard disk drives and magnetic fasteners.

There are two principal neodymium magnet manufacturing methods:

Classical powder metallurgy or sintered magnet process
Rapid solidification or bonded magnet process
Sintered Nd-magnets are prepared by the raw materials being melted in a furnace, cast into a mold and cooled to form ingots. The ingots are pulverized and milled; the powder is then sintered into dense blocks. The blocks are then heat-treated, cut to shape, surface treated and magnetized.

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

Product Range


Magnetisation Grade:         N40
Material: Neodymium-Iron-Boron (NdFeB), Neodymium and Steel
Magnet ID:              NCB-28124-N40-Ni
Plating / Coating:  Nickel (Ni-Cu-Ni) / Double Ni / Zinc (Zn) / Epoxy
Shape:         Block with Countersunk (countersink)
Countersunk Magnet Size:
Block Total Long (L):       28 mm
Block Total Height (H):        12 mm
Block Total Width (W):         4 mm
Small Hole Diameter (d):      4 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

Technical Drawing