In machine tools, a spindle is a rotating axis of the machine, which often has a shaft at its heart. The shaft itself is called as a spindle, but also, in shop- floor practice, to refuding not only the shaft itself, but its bearings and anything attached to it (chuck, etc.).Nov 07, 2002 · Bearing materials Spindle bearings have traditionally been made from high-carbon chromium steels such as 100Cr6. These bearings work well in Sep 01, 2012 · Spindles are machinery subsystems that integrate shafts, bearings, and power-transmissionponents such as belts and ballscrews, motors, and in Jun 20, 2022 · Spindle design involves constructing a high-speed spindle for use in machining applications. One must choose the rightbination of materials, geometry, and construction to meet the specific needs of a particular application.