New RDD-Series™ Direct Drive Servo Motors From Rockwell Automation

Machine designers are increasingly implementing direct drive technology to build high-performance machines that require less energy, are easier to maintain, and can quickly accommodate changes - all at the same or lower cost as machines built with traditional motion control solutions.

As part of the Rockwell Automation Integrated Architecture™, the comprehensive Allen-Bradley® Kinetix® Integrated Motion solution now features RDD-Series Direct Drive Rotary servo motors. Rotary direct drive technology helps eliminate the need for power transmission devices, such as gearboxes, timing belts and pulleys, and can help reduce system compliance, allowing faster settling times and better overall control of the load.

Since eliminating power transmission devices reduces power wasted in the form of heat, friction and noise, direct drive technology can often allow machine designers to use a smaller motor and drive that require less current, which helps lead to an overall increase in system efficiency.

The initial RDD-Series offering, the Bulletin RDB, incorporates a bearingless housed configuration designed for applications where the load is already supported by its own bearings, such as unwind/rewind stands, web guides and print, nip and feed rolls. The bearingless configuration simplifies installation for these applications while minimizing package size and alleviating alignment issues between the motor and the load.

The Bulletin RDB bearingless motors feature windings optimized for use with the latest Kinetix servo drives, as well as multiple speed options, Heidenhain high resolution absolute encoders and rotatable DIN connectors.

For more information on direct drive rotary servo motors and Kinetix Integrated Motion, visit www.ab.com/motion.

Allen-Bradley, Integrated Architecture, Kinetix and RDD-Series are trademarks of Rockwell Automation, Inc.