The DGII Series is a line of of products that combine a high rigidity hollow rotary table with an AlphaStep absolute encoder AZ series closed loop stepper motor and driver package. It retains the ease of use of a stepper motor, while also allowing for highly accurate positioning of large inertia loads.
Integrated actuator and stepper motor makes design easier
Easy Home Setting and Return-to-Home without need for sensors
Large-diameter hollow output table
Stepper motor provides excellent performance
Agile responsiveness
Stability at low speeds
Tuning-free
Pulse Input, Pulse Input with RS-485 Communication and Built-in Controller (Network) type drivers
The gear-reduction mechanism employs precision gears along with a proprietary adjustment mechanism that eliminates backlash. The repetitive positioning accuracy from a single direction is ±15 sec., while lost motion in a positioning operation from two directions is 2 arc minutes. These characteristics make the DGII series the ideal choice for applications in which accurate positioning is a must.
The hollow output table is integrated with a high rigidity crossroller bearing*. The structure improves permissible thrust load and moment load while maintaining high torque.
The output table uses deep-groove ball bearings (two pieces) for the 2.36 in. (60 mm) frame size type, and a cross-roller bearing for the 3.35 in. (85 mm), 5.12 in. (130 mm) and 7.87 in. (200 mm) frame size types. As the frame size increases, the permissible moment load also increases but the displacement caused by the moment load decreases.