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A one-way bearing is a bearing that can rotate freely in one direction but is locked in the other direction. The metal shell of a one-way bearing contains many rollers, needle rollers or balls, and the shape of its rolling seat (hole) allows it to only roll in one direction, while producing great resistance in the other direction ( So-called "one-way").
How one-way bearings work
1. Ramp and roller design
The ramp and roller one-way clutch basically consists of an outer ring with a cylindrical inner diameter, an inner ring with a slope, and a set of rollers that respectively bear spring force and are always in close contact with the inner and outer rings. As long as the rotation of one raceway in its direction of motion affects the other, this arrangement essentially ensures the immediacy of overspeed and guarantees immediate drive capability.
This type of one-way clutch can be used for overrunning, indexing and backstop in various environments.
When used as an overrunning one-way clutch
A ramp roller one-way clutch will be installed in such a way that the outer ring acts as an overrunning member. This is very important for high-speed overtaking. In the application of inner ring overrunning, the centrifugal force acting on the roller will cause the overrunning speed to be limited.When used as a non-return one-way clutch
The slope roller one-way clutch with only the inner ring rotating is suitable for relatively low speeds. If the required speed is higher than the recommended speed, it is recommended to use a sprag type one-way clutch.
When used as an indexing one-way clutch
The outer ring is often seen as the swing element, and the inner ring is often seen as the slave element. Otherwise, the inertia of the rollers and springs will cause errors, especially when indexing at high frequencies. The use of dilute lubricating oil and strong springs provides high-speed indexing accuracy and high quality.
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