Ball Screw, Surface Finishing : Precision Ground & Polished

As a mechanical element that produces linear motion, a rack and pinion system is often compared with to ball screw. When compared with a rack and pinion, generally a ball screw has superiorities of accurate positioning, smooth motion with a little friction, and no backlash, on the other hand, ball screws have the disadvantages of higher cost, the difficulty of producing ball screws with long lengths due to deflexion, and unsuitability for heavy loads.