The compact RBA electric rotary actuator allows unlimited rotation in both directions via a toothed belt drive with adjustable eccentric tensioner. The driven pulley features a through-hole for cable/tube routing, ensuring easy integration. Mounting is possible on all body surfaces, with flexible flange positioning. It can be used as a rotary table or combined with moving axes (e.g. VBK). Available in two sizes, RBA-1 and RBA-2, with brushless or stepper motors with encoder and brake; the RBA-2 version includes a precision planetary gearbox.