Bearing characteristics:
High accuracy: the accuracy can reach p4, p2 level
High rigidity: this series bearing all has pre-load
High load: they can withstand radial load, axial load and torque load
High rotate speed: bearing do pure rolling when rolling element in the process of movement, avoid the relative sliding, so the speed limit is much higher than cross roller bearing, 
Low friction: friction torque lower than crossed cylindrical roller bearing.

Application:
Widely used in high-speed car, high-precision worktable, vertical boring bed, grinding spindle.