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February 24, 2020

A planetary gearbox refers to a gear system where one or more ‘planet’ gears rotate around a central ‘sun’ gear. Typically, a world carrier is driven by the input torque which rotates the planets around a fixed outer ring (sometimes referred to as the annulus). Therefore drives sunlight gear which then supplies the output torque. Nevertheless there are types of the additional combinations, like 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 can be around simply 3% per stage. Further to this, the high effiency is delivered regardless of the compact design giving a large torque to size/weight ratio. Some of this is because of the load sharing that occurs across the multiple planet gears.
A planetary gearbox refers to a gear system where one or more ‘world’ gears rotate around a central ‘sun’ gear. Typically, a planet carrier is powered by the input torque which rotates the planets around a fixed outer ring (sometimes referred to as the annulus). Therefore drives the sun gear which then provides the output torque. However there are types of the additional combinations, like 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 is often around simply 3% per stage. Additional to this, the high effiency is usually delivered regardless of the compact design giving a big torque to size/weight ratio. A few of this is thanks to the load sharing that occurs over the multiple planet gears.

Reliable Small Planetary Gearbox
EP Motor’s little planetary gearbox is available in 7 different sizes with diameters of 16mm, 22mm, 26mm, 28mm, 32mm, 36mm, and 45mm, each consisting with mono and multi-stages, and the apparatus ratios range between 3.3:1 ~ 1500:1.

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