Advantage of Planetary Gearbox

High Efficiency

Planet gears are in full and constant-meshed, eliminating the possibility of gear tooth damaged from gear clash or partial engagement. The full and constant-meshed feature also permits automatic and quick gear ratio changes without power flow interruption.  A typical efficiency loss in a planetary gearbox arrangement is only 3% per stage; this type of efficiency ensures that a high proportion of the energy being input in transmitted through the gearbox, rather than being wasted on mechanical losses inside the gearbox. Efficiency better than harmonics, can be over 90% in some cases.

Compact Size

Planetary gear unit shares a common axis which results in a structure of compact size than traditional device.

Higher Torque Density

Higher torque density, as well as greater load ability is obtained with more planet gears in the system.

Greater Stability

Due to the even distribution of mass and increased rotational stiffness, the arrangement of planetary gearbox also creates greater stability.

High Radia Loads

Planetary gears are strong and sturdy, which can handle larger torque loads, for the compact size, in comparison to other gear combination in manual transmissions. This is because that the torque load as it passes through the planetary set is distributed over the several planet pinion gears, which in effect allow more tooth contact area to handle the power transmission.