COUPLINGS

SFF · SFM MODELTwo Standardized Models Durable under the HarshSpecifications Required for Machine ToolsSERVO FLEXSFF · SFMA selection of SFF models is available for use by the feed shaft, and a selection of SFM models is available for use by themain shaft.Two types of couplings, either a high-rigidity type with one element or a high-flexibility type with two elements using aspacer, can be selected respectively.In particular, the SFM model that has been developed for the main shaft of machine tools allows a maximum rotation speedof 20,000 min -1 and is capable of substantially lowering wind roar during high-speed rotation by the design that lowers thecoupling circumference or edge irregularity to the extent possible.It is mounted by a high-reliability friction lock. Extremely high-precision mounting is realized by using a centeringmechanism.PLATE SPRING OF IDEAL FORMHigh Rigidity, High FlexibilityA plate spring with an ideal shape through design based on thorough analysisusing the advanced finite element method (FEM) is applied for the element.This is available with a choice between the high-rigidity type with one elementand the high-flexibility type with two elements using a spacer.TORQUETHRUSTBENDINGRADIAL42COUPLING_E_42_55new.indd 42www.feyc.es9/15/10 4:25 PM