Eight times straighter than standard rotary shafts, these tight-tolerance shafts minimize vibrations and reduce wear to bearings and other components. They also have diameter tolerances that are twice as tight as standard rotary shafts.

Connect these internally threaded shafts directly to threaded components, or use a fastener to secure.

The diameter of these shafts is slightly smaller than listed, so precision ball bearings (ABEC-3 and above) slide on without any tools.

Internal threads allow you to mount these shafts onto threaded studs and fasteners, no shaft supports needed.

For a snug fit with a linear bearing in high-precision applications, these shafts are turned, ground, and polished to tight diameter and straightness tolerances.

With 2" of each end softened, it's easier to machine a custom end for mounting. The rest of the shaft is case-hardened, which increases hardness and wear resistance on the surface of the shaft while allowing the center to remain soft for absorbing stresses caused by shifting loads.

These shafts include a support rail for a stable setup that eliminates bending and prevents linear bearings from rotating.