Second, the planet gear bearings have to play an active role in torque transfer. Planetary systems split the torque insight from sunlight gear amongst the planet gears, which transfer torque to a planet carrier linked to the gearbox result. The bearings that support the planets on the carrier have to bear the full brunt of this torque transfer.
Or, in acute cases, they may select angular get in touch with or tapered roller bearings, both of 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 space in a planetary gearbox to include the type of bulky bearings that can tolerate high axial forces.
The presence of axial forces makes things completely different for the bearings that support helical gears. But it’s important to make a distinction between fixed-axis and planetary gearboxes. In fixed-axis gearboxes, the additional axial forces amount to little more than an inconvenience. Gearbox designers will most likely upsize the bearings to support the additional forces.
Since they won’t need to withstand any axial forces, spur gear bearings perform just a supporting role in the functioning of the gearbox. The bearings simply need to support the rotating equipment shafts, but they do not play an active role in torque transfer.
Helical Gears Place Greater Demand on Bearings
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