SCHUNK: ERT Series Equipped for the Future
March 8, 2023
With its ERT series, SCHUNK offers rotary units that are characterized by a particularly flat design and enable precise, flexible, and highly dynamic rotational movements. The unit can be used as a rotary table for components, assembly groups and tools, and can also be used as a rotary module in gantry solutions, as a rotary indexing table or a high-precision positioning module. The direct drive by a permanently excited torque motor ensures precise, highly dynamic movements. An absolute encoder that eliminates the need for re-referencing ensures a repeat accuracy of 0.01°. Short response times and high torques are additional advantages offered by the ERT series.
A large-dimensioned center bore allows the feed-through of cables and hoses, and even enables the use of a camera. Even when using an optional electric brake, which is controlled directly via the controller, the low overall height (up to 40% flatter than comparable units) remains unchanged. This makes the ERT series rotary units the top choice for compact assembly and handling applications.
ERT 100 and new features for wider application range
The new ERT 100 size with a rated torque of 16.7 Nm closes the gap between the established models of the ERT series, which were previously available in the sizes 12, 50, and 300 with rated torques of 1.5 Nm, 7.8 Nm, and 32 Nm. At the same time, SCHUNK has further increased the variety of measuring system interfaces so that the modules can be combined even more flexibly with different drive controllers. With the HIPERFACE and DRIVE-CLiQ interfaces, connection is made via two standardized plug connectors, separately for motor and encoder cable.
One new feature is the HIPERFACE DSL encoder interface, which combines all the advantages of a digital real-time interface. As a compact single-cable technology, it saves costs and is easy to implement – an enormous increase in efficiency and an important basis for Industry 4.0 applications. The path measuring system of the ERT rotary module works as a motor-feedback system for absolute measurement, single-turn version, with the HIPERFACE, HIPERFACE DSL and DRIVE-CLiQ interfaces.
Beside the electric holding brake, SCHUNK optionally offers the higher IP54 protection class and a UL certification according to US and Canadian regulations is available on request. The range of possible applications is immense. It extends from battery cell assembly and handling hairpins to stationary use as a rotary indexing table. Additional fields of application can be found in electronics, medical and laboratory technology, the pharmaceutical, cosmetics, and solar industries, as well as in installation-space-optimized applications in mechanical engineering, laser processing or packaging processes.
Last, but not least, SCHUNK provides users with the digital design tool ERT via download for the precise calculation and design of the swiveling times, once again proving itself to be an automation expert who provides its customers with a holistic solution.
