Neodymium Cube Magnets
When space is limited but holding force matters, Neodymium Cube Magnets offer a practical alternative to thin disc magnets. Their equal-sided shape makes them easy to position, stack, and integrate into fixtures where a compact, solid magnetic block is needed.
Neodymium Cube Magnets: Compact Size, Strong Holding Force
A neodymium cube magnet is a sintered Neodymium (NdFeB) block ground to equal sides - 10 mm each way in the common size - so it reads the same whichever way it lands in the fixture. It is nickel-copper-nickel plated and charged through one pair of faces. We reach for a cube rather than a thin disc when someone wants a lot of holding force in a small footprint and does not mind it standing proud; that extra depth is real magnet, and it shows in the pull.
Available Sizes and Magnetic Grades
Sizes and grade. 10 mm is what leaves the shelf, with 5 mm and 15 mm on the same grinding route and anything between cut to order. We run N42 or N45 as standard and N50 or N52 when a customer wants the strongest thing we can make in that little body. Bigger edge, more magnet: the table below shows how weight and pull scale across the three stock sizes. A 10 mm N45 cube pulls a couple of kilograms off thick mild steel; move it onto thin or painted sheet and that number drops a lot, and we would rather give you the honest working figure than quote the bench maximum and disappoint you on the shop floor.
Common Applications of Neodymium Cube Magnets
Where a cube earns its place. All three sides being equal means it grips face-to-plate or stood on edge, and it stacks and indexes cleanly in a jig, so it suits holding and fixturing, magnetic bases, sensor and reed work, and calibration or teaching blocks. It is not the shape to choose when you need a flush fit or a wide flat contact - that is a disc.
Tolerance and handling. Ground faces hold to about ±0.1 mm so the cube sits square, and we ship them spaced, because a cube is hard but brittle and two of them slamming together will chip a corner, and a chipped corner is both ugly and a little weaker. Nickel by default, epoxy for damp or handled parts.
If a neodymium cube magnet is the part your design wants, send the edge length, the grade, the coating and the quantity and we will confirm tolerance and magnetising direction before quoting; anything other than 10 mm comes off the same route.
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