The screw itself comes in two types: Precision Ground Ball Screws ground to a high precision (accuracy in six grades from C0 to C7), and Rolled Ball Screws formed by rolling to a high precision (accuracy in three grades from C7 to C10). In addition to the conventional series of Ball Screws used to rotate the screw, Nut-Rotating Ball Screws (Rotary Ball Screws) form a new series used to rotate the nut.
For a Ball-Screw-peripherals Support Unit incorporating support bearings necessary in practical use, the Nut Bracket and Lock Nut are also provided as standardized equipment. You can choose the correct model for your situation from our wide array of products. THK Product News