Magnet Dimensional Tolerances: What to Watch for
As a purchasing manager, your facility and products must meet specific requirements. One such requirement is reliable tools and components — in this case, magnets. Whether you need to hang something from the ceiling or sew a magnetic clasp into a shirt, any magnet you use must fall into a permissible range of dimensions (depending on the shape, grade, and material).
Any variation that falls outside the dimensional tolerance (for example, if it’s too big or too small) is noncompliant. The purpose of knowing this range — the formal dimensions of a completed magnet — is to specify leeway for variations in manufacturing.
Just as a ½-inch by 2-inch neodymium disc magnet may be better for one application than a ½-inch by 3-inch neodymium disc magnet, a ½-inch by 2-inch magnet may be preferable to a ½-inch by 2.004-inch magnet. Many businesses cannot tolerate even such a minor variance.
Dimensional Tolerances at Apex Magnets
In general, the magnets available at Apex Magnets have fairly standard machine tolerances — +/- 0.003 inches to +/- 0.005 inches. The variation can exist in both diameter and width, so be sure to take that into consideration if exact measurements are required for your purposes. To give you a better idea of what we mean:- A ¼-inch by ¼-inch cylinder magnet has a tolerance of +/- 0.003 inches.
- A 3-inch by 3-inch cylinder magnet has a tolerance of +/- 0.005 inches.