What about Magnetic Gears

No fragments, no need for lubrication, and no wear. These speed reducers are indeed very enticing advantages of a new type of gear reducer that has seen a substantial rise in popularity in recent years. As the name suggests, this type uses magnetic attraction to ensure speed and torque increase, instead of moving gears against each other. But with today’s technology magnetic gears suffer from a higher weight and relatively low torque output compared to their conventional counterparts. Therefore, they remain special solutions for specific cases such as applications with high maintenance costs and operations in harsh environments.