NK 1212 | Machined Type With IR | NK Series

NK 1212 The NK 1212 is a machined‑ring needle roller bearing without inner ring. Its design assumes that the shaft itself will serve as the inner raceway (i.e. the shaft must be hardened/ground). This makes the NK 1212 very compact, low‑profile and suitable for light weight or space‑constrained applications where shaft treatment is already handled, such as small motors or compact gear assemblies.