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Ball Spline

The HIWIN ball spline, also known as a ball spline shaft, is an anti-rotation shaft guide consisting mainly of a nut filled with steel balls and a shaft with several longitudinal grooves arranged in pairs. The steel balls roll in the tracks between the nut and shaft in a closed circuit and allow the nut to move along the shaft with low friction and high precision. The angular contact between the steel balls and the track in the nut and shaft enables radial loads and torques to be absorbed.