Electromechanical and Drives Division Europe

New patents for Parker’s ETH cylinders reduce commissioning and maintenance time

Offenburg, Germany, 28. November 2017Parker Hannifin, the global leader in motion and control technologies, has announced two important new patents for its class-leading series of ETH high-force electro-thrust cylinders. The patents are designed to reduce commissioning and maintenance time for users, as well as minimise machine downtime.


The first patent sees the introduction of a unique lubrication port that allows the application of grease in seconds, without the need to disassemble any part of the cylinder. At the core of ETH cylinders is a high-quality, precision ballscrew that is designed to deliver smooth operation over the entire speed range. However, all ballscrews require occasional re-lubrication over the course of their operating life. In order to simplify this process and save time, Parker’s engineers have designed the integrated lubrication port. The patent-protected port is located on the rear bearing block/housing of the extrusion profile.


Parker’s second new patent for its ETH cylinders relates to the tensioning of the timing belt that couples the ballscrew to a parallel-mounted motor. To ensure optimum torque transfer, belt tension must be perfectly adjusted. Here, Parker has devised a clever tensioning principle in order to increase reliability and reduce the amount of time this process requires.


The patent-protected tensioning principle, which is based on a simple system involving a toothed belt, threaded pins and lock nuts, allows perfect tension to be achieved. Another major advantage of the process is vastly simplified maintenance. For instance, if a customer ever needs to change the motor, the same belt tension is retained; there is no need for any adjustment.


Parker’s popular ETH electro-thrust cylinder is designed to close the gap between pneumatic and hydraulic actuators, providing a reliable and economic alternative to both in a wide range of industry applications.


About Parker Hannifin
Parker Hannifin is a Fortune 250 global leader in motion and control technologies. For 100 years the company has engineered the success of its customers in a wide range of diversified industrial and aerospace markets. Learn more at www.parker.com or @parkerhannifin

Media Contacts

Valéry Vançon
Marketing Communications Manager
Motion Systems Group Europe, Parker Hannifin
Telephone: +33 (0) 685 748 217
Email: vvancon@parker.com