The new AM8500 series extends the Beckhoff servomotor range with increased rotor moment of inertia. This servomotor series is suitable for all applications with larger external mass inertias, in particular CNC applications in machine tools and woodworking machines. The AM8500 series covers a wide performance range with four sizes and three lengths with standstill torques from 1.38 to 29 Nm. A particular highlight, as with all servomotors from the AM8000 series, is the One Cable Technology (OCT), with which the power and feedback systems are combined into one standard motor cable.
Beckhoff servomotors are already characterized by outstanding dynamic characteristics and the special internal electromagnetic design, e.g. for outstanding overload behaviour, but the new AM8500 series now provides a further benefit for CNC applications in machine tools and woodworking machines, among other machine types: a larger rotor moment of inertia. Typical areas of application for the AM8500 servomotors also include printing machines as well as in film winders and feeding drive units. Due to the modified rotor geometry the moment of inertia is increased, depending on the length, by 100 to 300 % compared to previous AM8000 series servomotors.
Due to the high rotor inertia, the control of the AM8500 is simplified in areas where a high external inertia has to be moved, because the servomotors tend to vibrate less and can be adjusted much more easily on the servo controller. In some cases it is even possible to do without a gearbox if one is necessary only for the ratio of external to intrinsic inertia.
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