... suitable for saving drive motor power. 1. Precision, Caged Ball Screw A Ball Screw that achieves low noise, small torque fluctuations and long- ... operation by using a ball cage.[Model number]SBN, SBK, HBN2. Precision Ball Screw A Ball Screw using a screw shaft ground to high ... number]BNS-A, BNS, NS-A, NS4. Rolled Ball Screw A Ball Screw using a screw shaft roll-formed to high accuracy. [Model number] ...