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Rolling screw rod is composed of the screw rod, screw nut, screw nut base, supporting base, and coupling. Its function is to transform the rotational motion into linear motion, which is the further extension and development of the screw. The important meaning of this development is to change the bearing from rolling action to sliding action. Since the screw rods normally have very little friction resistance, screw rods are broadly used in various industrial equipment and precision instruments.

Why is the screw nut more expensive than the screw rod? To answer this question, we need to first distinguish the kinds of rolling screw rods. Different kinds of screw rods have different prices, and different precision also results in different prices. As a professional manufacturer who specializes in the production of different CNC machine accessories, HYCNC, a professional CNC parts manufacturer, can provide you with various types of CNC screws and parts of CNC. And normally, the higher the precision, the higher the price. At the same time, the processing technology of screw nuts is also more complex than that of screw rods, so the price of screw nuts is more expensive.

Currently, for processing technology, the screw rod of ball screw pairs is generally divided into ground ball screws and rolled ball screws, but all screw nut raceways are ground. Consequently, if you need the rolled screw, the screw nut may have a higher price. On the current market, rolled screws are all measured in meters, while ground screws are all measured in millimeters.