Neodymium Disc Countersunk Hole Magnets

Neodymium disc magnets with countersunk holes are powerful rare earth magnets that have a countersunk hole
in the center, allowing them to be easily fastened to surfaces with a screw

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neodymium disc countersunk hole magnets D1/2x1/8 Inch

Neodymium disc countersunk hole magnets (D1/2 x 1/8 inch) are high-performance rare earth magnets designed for applications requiring a strong magnetic hold and precise mounting. With a diameter of 1/2 inch and a thickness of 1/8 inch, these magnets feature a countersunk hole, allowing for easy installation using screws or bolts. The countersunk hole ensures a flush fit, making them ideal for use in a variety of mechanical, industrial, and DIY applications.

Manufactured from neodymium, the strongest type of permanent magnet available, these magnets provide an exceptional magnetic force despite their compact size. Neodymium magnets are known for their high coercivity and excellent resistance to demagnetization, ensuring long-term reliability in demanding environments.

These disc magnets are commonly used in assemblies, electronic devices, magnetic closures, magnetic mounts, and more. Their strong holding power makes them a go-to solution in industries such as automotive, aerospace, and home improvement. The precise dimensions and strong magnetization provide users with a reliable and efficient way to secure and attach components.

Specification


Material	Neodymium, Iron, Boron
Grade	N35~N48, Please choose suitable Grade as application
Shape	Disc with countersunk hole
Dimension	Dia1/2 inch Thickness: 1/8 inch or Customized upon design
Plating	Ni, Zinc or black epoxy
Magnetized	Axial
Tolerance	±0.004" x ±0.004" x ±0.004"
Export Port	Xiamen, China

Magnetic Property

Grade	Br mt(KG)	Hcb Koe(KA/m)	iHc Koe(KA/m)	(BH)max KJ/m3 (MGOe)	TW℃
N35	1170-1210(11.7-12.1)	≧10.8(≧860)	≧12(≧955)	263-287(33-36)	80
N38	1210-1250(12.1-12.5)	≧10.8(≧860)	≧12(≧955)	287-310(36-39)	80
N40	1250-1280(12.5-12.8)	≧11.6(≧923)	≧12(≧955)	302-326(38-41)	80
N42	1280-1320(12.8-13.2)	≧11.6(≧923)	≧12(≧955)	318-342(40-43)	80
N45	1320-1380(13.2-13.8)	≧11.0(≧876)	≧12(≧955)	342-366(43-46)	80
N48	1380-1420(13.8-14.2)	≧10.5(≧835)	≧12(≧955)	366-390(46-49)	80

Common Application for Disc neodymium countersunk magnets

Industrial Applications: Used in machinery and equipment where a strong magnetic hold is necessary.
Household Applications: Perfect for DIY projects, such as magnetic latches for cabinets, tool holders, or refrigerator magnets.
Automotive Industry: Used in various components due to their strength and reliability.
Electronic Devices: Found in hard drives, speakers, and motors.
Exhibits and Displays: Used to secure panels and signs

Features for neodymium counterbore magnets

Countersunk Hole: The countersunk hole allows for the magnet to be easily attached to surfaces using flathead screws.
High Strength: Neodymium magnets are the strongest type of permanent magnets available commercially.
Corrosion Resistance: Often coated with nickel, zinc, or epoxy to protect against corrosion.
Versatility: Available in various sizes and strengths to suit different applications.

Other magnets with countersunk hole

Block countersunk hole magnets

FAQ

Q: Is it difficult to produce countersunk hole magnets?

Producing countersunk hole magnets can be more complex than manufacturing standard magnets due to several additional steps and considerations.

Material Selection: The type of magnetic material (e.g., neodymium, ferrite) can affect the production process. Neodymium magnets, for instance, are quite brittle and require careful handling.

Machining: Creating the countersunk hole requires precise machining. This involves drilling a conical hole that allows a screw to sit flush with or below the surface of the magnet. The process must be carefully controlled to avoid cracking or damaging the magnet.

Magnetization: The magnetization process might be affected by the countersunk hole. Care must be taken to ensure that the magnetic properties remain consistent despite the hole.

Coating and Plating: Magnets, especially neodymium magnets, often require a protective coating or plating (such as nickel, zinc, or epoxy) to prevent corrosion. The countersunk hole must be uniformly coated, which can be challenging.

Quality Control: Ensuring the dimensions and magnetic properties meet the required specifications involves stringent quality control measures.

Process Chart

product-765-437

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