The CRBU series is a free mount style, rotary actuator with direct mounting available in three directions. Axial, vertical and side directions are possible. Through the adoption of specially designed seals and stoppers, a rotation angle of 270° has been achieved for the first time in a compact vane style actuator. To support thrust and radial loads, bearings are used throughout the series. In addition, rubber bumpers are used internally (except size 10) to further improve reliability.