The purpose of the bearing isn’t so you can spin it around in circles,” Chartre says. It’s like a Lazy Susan bearing on your spice rack that you turn to the position you need. It’s transmitting a torque, typically when you have an application like wind turbine blades. “It’s a static bearing being used for position, not for rotation. Some oscillating bearings also can be thought of as carrying a load rather than rotating a device, explains Mike Chartre, CEO of Powertrain Engineers, a company that designs industrial gearing shafts and bearing systems. Like kids on a swing or seesaw, they oscillate back and forth or up and down.
Countermeasures to reduce damage can be high or low tech.Ĭranes, wind turbine blades and airplane wing flaps all have a similar problem: the bearings that help them rotate don’t go in a full circle.Small angle oscillations don’t move grease around efficiently.Oscillating bearings wear and get damaged differently than rotational bearings.
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