Benefits of Planetary Gearbox

High power density –Power density is the amount of power (time rate of energy transfer) per unit volume. In case of planetary gears the load is shared by several planets instead of single gear like in other types of gearing, More the planets more the sharing of load and more the power density. As a result of which planetary gear box  provide high power density in comparison to standard parallel axis gearboxes. Reduction due to high volume of planet gears, Multiple kinematic combinations, Purely torsional reactions, and coaxial shafting are the main parameters for high power density of planetary gears.

Compact Size: Due to high power density and coaxial shaft arrangement, the planetary gearboxes are more compact. In case of planetary gear system, driving member and driven member are concentric and therefore driving and driven equipment's could be installed in same line which will result space saving. More on use of  multiple planet gears helps to achieve high  gear ratios in small space. Due to this planetary gearboxes are more suitable to the applications which demand high speed reduction in compact space.

Light Weight: High power density and compact size results into very light weight, due to which for same gear ratio or torque the  planetary gearbox is more lighter as compared to other traditional (parallel shaft) kind of gearbox.

High Efficiency: Less power losses (upto 3% each stage) results in to high efficiency of planetary gearboxes. The gearing arrangement of planetary gears tends to transfer maximum of input energy to desired output, due to which efficiency as high as up to 97% can be achieved for first stage of planetary gearbox.