The SCHUNK ERS rotary modules were developed for rotary movements in the medium load range. The currently most compact mechatronic rotary module on the market is available in unit size 170 with a height of 66mm, achieving a nominal moment of 5Nm, and a maximum moment of up to 17Nm. It is used for implementing flexible and compact system concepts.
The core piece is a torque motor with a hollow shaft. It is lightweight and compact, and is absolutely wear-free, making it very reliable. It can endlessly turn up to 250rpm to any intermediate position at a repeat accuracy of 0.01°. In contrast to rotary modules with a conventional servomotor, the ERS has no additional interfering contours and no elasticity. An optional integrated pneumatic holding brake ensures that individual positions can be reliably fixed. The centre hole allows feed-through of cables, workpieces or the use of a camera.
In order to feed compressed air or signals without hoses or cables through the module, the compact module is also available in a version with pneumatic-electric feed-through, by using a slip ring or air channel of up to eight electric signals (24V DC/2A), and a fluid with a pressure of up to 8 bar. The SCHUNK ERS is available in three sizes with outside diameters of 135mm, 170mm and 210mm.