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The 54311U NSK is a double direction thrust ball bearing supplied with a spherical seat washer. This bearing type is also known as a thrust bearing or axial deep groove ball bearing and it consists of a shaft washer, two housing washers, and two ball and cage assemblies. Thrust ball bearings have an open design. High rotational speeds are made possible by the ball elements. As thrust ball bearings are separable, the components can be easily assembled independently of each other.
Double-direction thrust ball bearings are suitable for axial loads in both directions, permitting axial locating of the shaft in either direction. However, these bearings are not intended for radial loads. The shaft washer is mounted on the shaft and rotates along with it, while the housing washers have a slightly larger bore diameter, providing clearance for free shaft movement. Additionally, these housing washers have spherical seats. Thanks to this design, the 54311U NSK can be combined with the included spherical seat washer, allowing for minor misalignments between the shaft and the housing to be accommodated.
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