Second, the earth gear bearings need to play an active role in torque transfer. Planetary systems split the torque input from sunlight gear amongst the earth gears, which in turn transfer torque to a planet carrier connected to the gearbox result. The bearings that support the planets on the carrier need to bear the full brunt of this torque transfer.
Or, in extreme cases, they may select angular get in touch with or tapered roller bearings, both which are designed to withstand axial loads.
In planetary gearboxes, however, it’s a lot more difficult to design around these axial forces for two related reasons. Initial, there is typically very little room in a planetary gearbox to include the type of bulky bearings that can tolerate high axial forces.
The presence of axial forces makes things very different for the bearings that support helical gears. But it is important to make a distinction between fixed-axis and planetary gearboxes. In fixed-axis gearboxes, the excess axial forces total little more than an inconvenience. Gearbox designers will often upsize the bearings to support the additional forces.
Since they won’t need to withstand any axial forces, spur gear bearings play just a supporting part in the functioning of the gearbox. The bearings simply need to support the rotating equipment shafts, but they do not really play an active function in torque transfer.
Helical Gears Place Higher Demand on Bearings
Helical Gearbox implies different things to various people, so take a look at our interpretation.