Neodymium Countersunk Magnets

Neodymium countersunk magnets are widely used in the market. These magnets have a countersunk hole, allowing them to be fixed to non-ferrous surfaces using matching screws. Neodymium countersunk magnets have expanded the range of magnet applications, becoming a choice for many consumers.

What are Neodymium Countersunk Magnets?

Neodymium countersunk magnets are a functional type of strong magnet with a countersunk hole in the center, which can be used with countersunk screws to fix them to equipment, walls, etc. They are typically measured by outer diameter, inner diameter, depth, and angle.

The size of the countersunk hole is generally determined by the size of standard screws, commonly used M3, M4, etc. Therefore, customers need to provide the screw size to the factory during the customization process.

Advantages of Neodymium Countersunk Magnets

| This design of a funnel-shaped countersink is particularly protective, preventing damage to the magnet. Moreover, this design is both aesthetically pleasing and safe.

| The countersunk hole provides a convenient method for magnet installation, allowing the magnet to be securely fixed to almost any surface using matching screws. This has expanded the use of magnets in daily life, such as magnetic door latches, magnetic tool racks, magnetic lamps, etc.

| Some products gain magnetic functionality by installing countersunk magnets, giving them more features than similar products.

Neodymium Countersunk Magnet Grades

N35, N42, N48, N52 are common grades for neodymium magnets.

Specifications For Reference

Neodymium Pot Magnet with Countersunk
Model	D	H	d1	d2	t	Weight
	mm	mm	mm	mm	mm	g
TY-N0-10	10	4.5	3.0	4.8	1.2	2
TY-N0-13	13	4.5	3.0	5.5	1.4	3
TY-N0-16	16	4.5	3.5	6.5	1.6	4
TY-N0-20	20	6.0	4.2	8.6	2.1	9
TY-N0-25	25	7.0	5.5	10.4	2.5	16
TY-N0-32	32	7.0	5.5	10.4	2.5	27
TY-N0-40	40	8.0	5.5	10.4	2.5	53
TY-N0-48	48	11.5	8.5	18.2	4.5	120
TY-N0-60	60	15.0	8.5	18.2	4.5	250

Magnetization Direction of Neodymium Countersunk Magnets

The direction of magnetization is very important for permanent magnets as it determines the operating surface of the magnet. Usually, neodymium countersunk magnets are axially magnetized, but magnet manufacturers can also process and manufacture them according to customer requirements.

Technical Requirements for Countersunk Holes

| The main purpose of the countersunk hole is to work with screws for fixing, so the size of the countersunk hole is generally determined by the size of standard screws. Common screws include M3, M4, M5, M6, M8, etc.

| The countersunk hole should be designed as a 90° conical hole, it can be slightly less than 90 degrees, but not more than 90 degrees. Usually, the drilling direction is parallel to the magnetization direction.

| The countersunk hole can be on the N pole or S pole of the magnet, depending on customer requirements. Regardless of whether the countersunk hole is on the N pole or S pole, countersunk magnets can be used in pairs for attraction or repulsion, meaning that when you use two countersunk magnets, the countersunk faces can either attract or repel each other.

FAQ

Can Holes Be Drilled in Neodymium Magnets?

Holes can be drilled in neodymium magnets. If the strong magnet already has magnetism, it needs to be demagnetized first, then drilled, and re-magnetized after the product’s appearance and specifications are completed.

What Machine Is Used For Drilling/Punching Neodymium Magnets?

Magnet manufacturers usually use bench drilling machines to drill, enlarge, and ream holes in magnets.

What Is A Countersunk Pot Magnet?

A countersunk pot magnet is a round or rectangular magnet with a countersunk hole, encased in a Q235 low carbon steel shell. They are an upgraded version of countersunk magnets, characterized by super strong attraction, high durability, and extremely easy installation.