A planetary gearbox refers to a gear system in which one or more ‘world’ gears rotate around a central ‘sun’ equipment. Typically, a planet carrier is driven by 
the input torque which rotates the planets around a set outer ring (sometimes known as the annulus). This in turn drives the sun gear which then provides the output torque. However there are types of the various other combinations, such as the sun gear being fixed and the band providing output torque.
The main advantage of planetary gearboxes are their high power transmission efficiencies. Typicially this can be around just 3% per stage. Additional to the, the high effiency can be delivered regardless of the compact style giving a big torque to size/weight ratio. Some of this is because of the load sharing that occurs over the multiple planet gears.
A planetary gearbox identifies a gear system in which a number of ‘world’ gears rotate around a central ‘sun’ equipment. Typically, a planet carrier is powered by the input torque which rotates the planets around a fixed outer ring (sometimes known as the annulus). Therefore drives the sun gear which then supplies the output torque. However there are types of the other combinations, such as the sun gear being set and the ring providing output torque.
The main benefit of planetary gearboxes are their high power transmission efficiencies. Typicially this is often around simply 3% per stage. Additional to the, the high effiency is delivered regardless of the compact style giving a sizable torque to size/weight ratio. A few of this is because of the load sharing that occurs over the multiple planet gears.
Reliable Small Planetary Gearbox
EP Motor’s little planetary gearbox comes in 7 different sizes with diameters of 16mm, 22mm, 26mm, 28mm, 32mm, 36mm, and 45mm, each consisting with mono and multi-phases, and the apparatus ratios range from 3.3:1 ~ 1500:1.
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