scope:

Is applicable to enclosed speed reducers and increasers for industrial applications, where the designs include spur, helical, herringbone or double helical gears and their combination in single or multistage drivers. Provides a method by which gear drive designs can be compared and selected. It is not intended to assure performance of assembled gear drive systems. It is intended for use by experienced gear designers capable of selecting reasonable values for the factors, based on performance knowledge of similar designs and the effects of such items as lubrication, deflection, manufacturing tolerances, metallurgy, residual stress and system dynamics. It is not intended for use by the engineering public at large.