China Neodymium And Ferrite Magnets Manufacturer & Supplier 
As we all know, bonded neodymium iron boron magnets are widely used in motors, electrical appliances, and other products due to their unique properties. Having worked with magnets for over a year, I have been asked by many customers, “How thin can you make the single-sided wall thickness of your bonded neodymium magnets?”
Before introducing this issue, let's first introduce what is the "single-sided wall thickness" of a magnet?
"Single-sided wall thickness" refers to the difference between the outer diameter and inner diameter of a ring-shaped magnet divided by two, i.e.: Single-sided wall thickness = (Outer diameter - Inner diameter) ÷ 2
For example, if a ring-shaped magnet has an outer diameter of Φ18mm and an inner diameter of Φ16mm, the single-sided wall thickness is (18-16)/2 = 1mm.
The image shows a bonded neodymium ring magnet with a wall thickness of approximately 1 mm.
Regarding the minimum single-sided wall thickness that can be achieved for bonded neodymium-iron-boron magnets, many people might say around 1mm, as most bonded magnetic rings typically have a single-sided wall thickness of around 1mm. In fact, bonded neodymium iron boron magnets can be made even thinner—0.6mm and 0.5mm are both feasible, depending on your specific requirements. [One of our clients in the medical device industry, for example, uses a single-sided wall thickness of 0.5mm, with overall dimensions that are also relatively small.]
Note: Thin-walled structures are not suitable for high coercivity sintered neodymium-iron-boron magnets, as they tend to be brittle. Bonded magnetic rings with thin walls have slightly lower magnetic performance but better uniformity. Thin-walled + high-uniformity bonded ring structures can be used for rotor outer sleeves.
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