Its mesh between gears is much more convenient than previous spur gear. Noise is reduced. It can be matched with servo motor, stepping motor, or IEC-motor to be used to different control filed. The lowest backlash ≤ 3arc-min, transmission efficiency up to 97%. Planetary Gearboxes are a type of gearbox where the input and output both have the same centre of rotation. This means that the centre of the input gear revolves around the centre of the output gear and the input and output shafts are aligned.
In general, there are three different types of gearboxes: concentric, parallel, and right angle. Planetary gearboxes are classified into three types: wheel drive, shaft output, and spindle output. A three-stage gearbox is obtained by means of increasing the length of the ring gear and adding another planet stage. A transmission ratio of 100:1 is obtained using individual ratios of 5:1, 5:1 and 4:1. It consists of four major components: the sun, one or more planets, a ring gear and a carrier (often called the arm or the spider). The major difference between planetary gearsets and ordinary gearsets is that the planets ‘orbit’ the sun; that is, their shafts are not fixed in space.
A gearbox is a mechanical method of transferring energy from one device to another and is used to increase torque while reducing speed. Torque is the power generated through the bending or twisting of a solid material. This term is often used interchangeably with transmission. The planetary gearbox got its name because of how the different gears move together. In a planetary gearbox we see a sun (solar) gear, satellite (ring) gear and two or more planet gears. Normally, the sun-gear is driven and thus move the planet gears locked in the planet carrier and form the output shaft.
