Rotary actuators are a well-known and effective means for turning, rotating and positioning objects, but not all can meet the high-performance requirements many applications demand — particularly when it comes to automated systems and equipment. When a machine design involves high torque, complex configurations, space constraints or changing requirements, it can be difficult to find a high-precision rotary actuator series that is versatile enough to address these challenges. This blog post will review important rotary actuator selection criteria along with the Automationware Rotac Plus precision rotary actuator series — an example of a space-efficient electromechanical actuator series that satisfies requirements for high performance and is adaptable to any use case.

Important Selection Considerations To Remember

As you consider rotary actuators and their benefits, here are some of the features necessary to achieve the high performance — and flexibility — your application requires:

• Accuracy and repeatability. In high-precision applications such as robotics, pick and place systems and lab automation, as well as applications involving small, complex motion profiles, even minor positioning errors can compromise product quality and reduce process efficiency. This makes accuracy and repeatability critical performance metrics. The distinction between a standard rotary actuator and a high-precision rotary actuator often lies in the utility of its control architecture and the precision of its transmission mechanisms.
• Flexibility and versatility. Automated applications often require actuators that are adaptable to different situations when needs or use cases change. Electromechanical rotary actuators that can be integrated into machines of varying sizes and complexity and can easily connect with various controllers and motors are particularly attractive. Further, compact actuators are useful by contributing to the overall miniaturization of the design by saving space and weight.
• High rotational force. When your application involves moving or precisely controlling large loads within combined spaces, it is important to select electromechanical rotary actuators that deliver a high torque output relative to their size. Be mindful that undersized or oversized torque output can lead to performance issues including inefficiency, instability or premature wear.

A Modular, Customer-Driven Rotary Actuator Combines Precision and Flexibility

One such electromechanical rotary actuator checks many of the boxes that are most important for designers looking to achieve optimal performance, efficiency and quality. Automationware’s Rotac Plus family of modular, multipurpose electromechanical rotary actuators combine a high torque output up to 70 Nm with exceptional positioning repeatability and scalability to ensure high performance and give machine designers the flexibility to adapt the units to their specific needs.

The heart of Rotac Plus is its powerful transmission system. It consists of a high-performance Kevlar® belt drive, double bearing supported shafts and a zero-backlash pulley system with micrometric tension adjustment ability. Together, these transmission components give the actuator high rigidity, load capacity and stability to enable precise positioning. Rotac Plus also gives machine designers the flexibility to add their preferred motors and drivers without negatively impacting precision and repeatability. In fact, users can also add a planetary gearbox to achieve up to 70 Nm of torque output. And, thanks to a large through hole in the rotating mandrel that is concentric with the axis of rotation, the Rotac Plus simplifies connections, accommodates cables and permits cable-passing rotation. Additional features and specifications include:

• Incremental encoder with up to 10,000 pulses per round with optional absolute encoder.
• Robust aluminum construction with anodized surfaces.
• Available RotacEASY control software with the ability to program up to 64 positions.
• Compatible with Automationware’s AwareVu vibration monitoring software.

Rotac Plus electromechanical rotary actuators are available in six sizes: 48, 65, 85, 100, 130 and 200. IKO is the U.S. distribution partner for Automationware. You can download our brochure on Rotac Plus rotary actuators at www.automationwareusa.com, or contact IKO at ikoaw_usa@ikonet.co.jp for more information.

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