Flat rotary unit with absolute encoder and large center bore

SCHUNK launches a new generation of universally applicable mechatronic rotary modules with the ERT rotary unit for compact space requirements. It is wear- and maintenance-free, flexible and precise, and allows dynamic rotational movements.

The flat, high-performance module is based on a permanently energized torque motor and is equipped with an absolute encoder. No reference run is required, and the unit ensures an immediate repeat accuracy of 0.01°, quick response times, and high torques. A large-dimensioned center bore allows cables and hoses to be fed through or even enables the deployment of a camera.

Numerous variations and options are available
The rotary unit can be used for particularly flexible and compact plant concepts as a rotary table for components, assembly groups, and tools - or as a rotary module in gantry solutions, rotary indexing table, or a high-precision positioning module. For ensuring maximum flexibility in the control and regulating strategy, it is possible to use drive controllers of different manufacturers. Therefore, the module can be seamlessly integrated into existing system architectures.

In the first step, the versatile module will be available at the beginning of 2020 in sizes 12, 50, and 300 with nominal torques of 1.2 Nm, 5 Nm, and 30 Nm, outside diameters of 120 mm, 167 mm, and 277 mm, and maximum admissible mass moments of inertia of 0.0021 kgm2, 0.2 kgm2, and 4.5 kgm2. The module is supplied with power and controlled via standard connectors (M12/M17). Optionally, they are also available with an electric brake, which is actuated over the controller, and reliably maintains the position in downtime, even if an external force is acting on it.

The height of the unit remains the same. The electric brake has no influence on it. What is more, dust-protected and splash-proof variants (IP54) are also available. In a second step, optional variants with rotary feed-throughs are planned for feeding through hoses or wireless feed though of electric signals, bus signals, or fluids, as well as further module sizes.

www.schunk.com

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