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U-Joint Identification | Types of U-Joints Explained

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Monica

Nov. 04, 2024
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U-Joint Identification | Types of U-Joints Explained

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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u joints

ok .... thanks for the responses .... think I got a handle on how to replace .... thanks for the pics and tips on using sockets /hand and mallet ..... looks like I will replace both u joints on the front shaft .... will make sure to mark everything so it goes back together the same way it came out .... now I would like to ask a couple more questions ..... research tells me that non greasable joints are more heavy duty than greasable (sp?) .... and looks like there are joints for driveline and then some say for axle shafts .... I sure would like a dana spicer part number for a set of heavy duty u joints for my front driveline .. that would help me a lot ..... sometimes will in 4 high I would get a slight rotational chatter or vibration .... was told it was most likely my u joints not liking the angle of being lifted .... but when under the truck I could never figure out why ... so no binding that I could ever find ... that is the only reason I mentioned the high angle u joints ... and i sure don't like the fact that Patrick said they have a speed limit .... and not to get to far off track but cut and turn is in my future and figured at that point I would address thicker bigger stronger front drive shaft .... truck gets pushed off road a couple times a month and as my experience level rises I plan on more adventures next season .... for those that don't know this is my first 4x4 and first time newb driver off road this summer .... so far the scout goes where ever I point it ... plan was to make it a capable mountain rig for exploring and camping ... to date it has never let me down and always knew that off road things would come up and parts of the truck that I have not addressed would show themselves and would be addressed as needed .... and that is what is happening now I believe .... old parts that have not had attention are letting me know .... sure appreciate all the help ... would have dynamited this truck long ago without you guys .... Matt

 

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