Rotomation's indexing actuators provide accurate and repeatable rotary motion in increments to fixed stops with no accumulating error - essential for a wide range of automation tasks. Leveraging a unique design, our actuators ensure precise positioning and reliable performance, making them ideal for applications requiring high accuracy and efficiency. 



How Rotomation Indexing Actuators Work: 

Our indexing actuators operate on a principle similar to standard rotary actuators, utilizing pistons and a rack-and-pinion system to generate rotary motion. However, we've incorporated a specialized clutch/bearing mechanism for enhanced precision: 

Clutch/Bearing System:  

• The pinion features an integrated clutch/bearing, with separate needle sets for shaft support and directional gripping. 
• During the drive stroke, the clutch engages the shaft, rotating it accurately. 
• During the reset stroke, the clutch disengages, allowing the rack and pinion to return without rotating the shaft. 
• A second clutch prevents backward shaft rotation. 

Ratchet and Pawl for Precise Stops:  

• A ratchet, with teeth corresponding to the desired index angles (e.g., 4 teeth for 90-degree indexing), ensures accurate stops. 
• A spring-loaded pawl interacts with the ratchet teeth, precisely halting shaft rotation. 
• This mechanism provides a locked position, preventing both forward and reverse rotation. 

Consistent Accuracy:  

• The actuator's design ensures accuracy is determined solely by the ratchet, not the stroke length. 
• The actuator remains locked while part processing takes place, then the directional control valve is shifted to initiate a reset stroke to prepare for the next index. 

Innovation Is Just a Click Away!

At Rotomation, we understand that every application is unique and requires a solution that's equally tailored. That's why we offer a wide range of Shaft Mount Adapters, Swing Clamps, and Special and Customized Actuators to meet your specific needs. 

Why choose Rotomation? 

• Cost-Effective Solutions: Our custom actuators can help you reduce the need for extra parts or engineering time, saving you money. 
• Improved Efficiency: Tailored solutions can optimize your product or process, leading to increased efficiency. 
• Enhanced Performance: Our actuators are designed to deliver the exact performance you need, ensuring optimal results. 

Our expertise extends to: 

• Shaft Mounting Adapters: Make it easy to mount tooling to the actuator shaft with high rigidity and precision. Optional pilot feature to keep your tooling exactly on center. 
• Swing Clamps: Securely hold and position components in your application. 
• Custom-Engineered Actuators: Designed to meet your specific requirements, from torque and speed to dimensions and materials. 

Need a specialized solution? Our team of experienced engineers can work with you to develop a custom actuator that meets your exact needs. Whether you require a simple modification to a standard unit or a completely new design, we are committed to providing the perfect solution. 

Reach out to our team to discuss your requirements and explore how our products can benefit your application.