In everyday gearing, the axes of the various gears are fixed, the movement on the gears currently being just rotations about their axes. In epicyclic gearing, a minimum of one equipment not just rotates, about its own axis but additionally rotates bodily about some other axis. Once-a-year gearbox inspection. https://gearbox17147.activosblog.com/32798754/considerations-to-know-about-gearbox