White Papers

Direct Drive servo motor and drive technology not only reduces an axis’ parts count, mechanical losses and often its objectionable noise; Direct drive technology also increases a machine’s efficiency, lowering operation cost for the user due to its inertia ratio, as compared to the more common mechanically advantaged multi-body axis designs. Reducing the mechanical transmission components such as gearboxes, timing belts, pulleys, cams, lead screws and so on, between the motor and its load is only part of the savings!

Food and beverage companies and their machine suppliers constantly fight to keep our food supply safe. These microscopic battles are fought with large quantities of water and chemical sanitation processes. Hygienic machine design is critical even down to the sub-component level in order to allow these processes to be effective in removing product residues, removing pathogens, and destroying bacterial intruders.

The ability to adopt and successfully carry out an effective sanitation program is largely determined by facilities and equipment that are constructed in alignment with sanitary design standards.

Your first question may be what is a servo motor’s inertia ratio or mismatch (J_load : Jm or J_load/Jm)? Simply put, the inertia ratio is an important figure-of-merit for helping the machine designer consider servo controllability and risk of future potential control instabilities during the design’s initial inception. While an important figure-of-merit for all closed loop (servo) applications, it is perhaps even more relevant for the most dynamic servo applications.