The motorized spindles are equipped with built-in motors for better power transmission and balance to achieve high-speed operation .The thermal deformation of the spindle owe to the heat decreases the accuracy of high-speed machine tool greatly. The dynamic characteristics are affected by thermal load, preload, centrifugal and gyroscopic effects. So the Finite element analysis is important to characterize the thermal and dynamic behavior of the high speed motorized spindle. The methodology for the thermal and dynamic analysis is arrived from the literature survey. Thermal analysis is...