A special ball screw bearing support BK serves to fix the screw from displacement along the axis. BK and EK series propeller bearings are metal housings with two angular contact bearings inside. Supports of this series are designed for the fixed end of the ball screw screw, i.e. are resistant and perceive both radial and axial loads.
For CNC equipment, ball screw bearings of the following sizes are often used:
BK10, BK12, BK15, BK17, BK20, BK25, BK30, BK35, BK40.
All popular ball screw support sizes can be found in the table below.
Ball screw bearing support BK – Dimensions and characteristics (fixed screw end)
(click to zoom)
The BK supports have a pair of angular contact bearings installed in a special way. That is why the support securely fixes the ball screw from displacement in the axial and radial directions.