U-Joint Bearing Cap Sizes
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When we are discussing the various bearing cap sizes of a u-joint it is important to note that the measurements between the different u-joint cap sizes are minimal and can be tough to confirm with a tape measure or ruler, which is why we recommend a set of calipers for precise measurements that are easy to confirm. But just what is a bearing cap on a u-joint? The bearing cap, sometimes referred to as a bearing case, on the standard single cardan u-joint is found at the end of each leg of the main u-joint body. These bearing caps feature a machined pocket that holds hardened needle roller bearings (and grease) for the bearing cap to rotate around the u-joint body. The bearing cap is a press fit into the driveshaft yoke and is retained by internal or external snap rings. A grease seal is fitted to the bearing cap to keep dirt and other contaminants out of the needle roller bearings and the grease in for a long service life.
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