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Ball screw bearing compared with the sliding screw nut has many advantages: high transmission efficiency, high sensitivity, stable transmission: wear and long life; eliminate axial clearance, improved axial stiffness.
Ball screw is a screw and nut balls as rolling elements between the screw drive components. Ball screw has a variety of structural types. Press the ball recirculation mode is divided into the outer loop and inner loop into two categories. Used intubation outer loop back bead style more, the inner loop back to the bead-shaped groove inserts Used waist style more.
Sectional shape of the track by threaded into single and double arc two kinds of circular cross-sectional shape. Since the axial stiffness of double arc truncate truncate more than a single arc, so now widely used double-arc truncate screw.
Press preload forms can be divided into single nut without preload, displacement lead single nut preload, ball screw bearings increase the radial preload single nut, preloaded double nut washers, double nuts difference tooth preload, double nut threaded preload. CNC machine tools commonly used double nut, washer pretensioner, which axial load preload is generally 1/3.
Ball screw drives are widely used in small and medium sized CNC machine tool feed drive systems. In the heavy-duty CNC machine short stroke (6m less) feed system is also frequently used.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NU2216E NTN | 80 | 140 | 33 |
| NU2216 NTN | 80 | 140 | 33 |