Zero-backlash servo rotary indexing table from Sankyo Automation

The Sankyo Automation RollerDrive Reducer is a precision gear reducer that uses a zero-backlash roller gear mechanism. The unit is constructed from an input shaft and a turret (output shaft) that is assembled with roller followers. The roller followers are preloaded against a screw-like input shaft to eliminate backlash.

Sankyo servo indexing tables offer a constant lead cam with a servo motor drive for programmable motion. Sankyo servo indexing tables provide fast highly accurate motion, with the added capability to move medium to heavy loads. The preloaded cam and turret provides a high performance zero-backlash servo indexing table for all  automation needs.

The RU Series servo indexing table is available in 11 different sizes. These servo-indexing tables come with varying ratios to maximize the motor’s torque capacity, speed requirements and enhance the overall accuracy. Special applications may need double reduction ratio of the internal cam (and an additional reducer) to provide large torque capacities or slower speed. Additional features of the RU Series servo indexing table include:

• Zero-backlash operation, as the RollerDrive uses a preloaded mechanism to completely eliminate backlash and deliver output motions that are faithfully true to input commands
• RollerDrive technology that incorporates a cam with a high gear reduction to deliver large torque capacities with smaller servo motors
• A second reducer option … as multiple reducer options keep the servo at optimal rpm

In addition, the reducer’s rigidity makes it suitable for machining applications. An exclusive output turret bearing and cast-iron housing tolerates heavy vibrations associated with machine tool applications. Plus the table is versatile for retooling … so the RU Series can keep pace with the ever-changing tooling requirements.

Plus short settling times mean the RollerDrive provides fast and highly accurate dynamic motion.

For more information, visit the Electromate page on the Sankyo RollerDrive RU Series Reducer.