Date Published:Mar. 16. 2021
Mounting and Maintenance

toritsuke_magnet_mm_NBK
Effect of air gap
The attraction force changes depending on the gap (air gap) between the compact powerful magnet for FA and the object to be attracted.
Effect of surface roughness
The attraction force changes depending on the surface roughness of the object to be attracted.
If a large attraction force is required, ensure that the surface of the object to be attracted has a suitable finish.
Effect of material
The attraction force changes depending on the material of the object to be attracted.
Attraction force | Material |
---|---|
100% | Pure iron |
99% | FCD400 |
95% | S15C |
94% | SS400 |
93% | SM490 |
90% | S45C |
90% | FC200 |
86% | SUS430 |
86% | S60C |
84% | SCM440 |
65% | SKD2 |
0% | Non-iron materials |
Additional Modification
Hard ferrites, samarium-cobalt, and neodymium materials used for compact powerful magnets for FA are extremely hard and brittle materials, so additional machining is not possible.
Alnico can be cut or polished using diamond tools.