Abstract: Motor shaft adapters include a cylindrical shaft sleeve with a tubular body defined between inner and outer cylindrical surfaces, and frame adapters that include a section of structural tubing and flanges having sides aligned to the sides of the structural tubing section and fixed at respective ends of the section of structural tubing into assembly between a motor and gearhead. Key slot apertures are defined by opposing body end-walls of the tubular body and through the inner and outer cylindrical surfaces of the sleeve. A shaft key has outer sidewalls that include opposing outer sleeve aperture sidewall portions that enable the shaft key sidewall portions to fit within and to thereby engage the sleeve via the key slot aperture. The key sidewalls further include a base pair of opposing key seat engagement portions that fit within and engage opposing sidewalls of a key seat aperture defined within a workpiece shaft.

Abstract: Embodiments provide for planetary gearing systems with sun, planetary and ring gears, wherein the ring gears have generally cylindrical or elliptical tooth forms with a common shape and geometric parameters. The ring gear and a sun gear each engage one or more of planetary gears in respective mesh engagements, wherein the gear forms on each may be independently formed as a function of their respective geometries (sun or ring gear pitches, and sun or ring radii from a common central axis of the planetary gearing system), and as a function of the planetary gear tooth form shape and geometric parameters, planetary gear radius from the common central axis, and the planetary gear tooth pitch.