August 27, 2018 | Motion Control Cageless Bearing Design Reduces Friction The inner race is shown in light blue, the outer race in gray, separators in dark blue, and load bearing rollers in gold. A cageless bearing with rolling separator elements was developed for applications including portable medical devices, toys, and robotic applications with medium force requirements. The normal cageless bearing has added rolling separator elements to overcome friction issues. The bearing system eliminates sliding friction losses by ensuring that all contacting surfaces have the same velocity, which leads to pure rolling and reduced incidental contact. This no-slip bearing system can be modified to become a combined friction drive transmission and bearing. Source View the discussion thread.