Glad you liked it!

Thanks again!

Obrigado! And thanks for watching.

Great suggestion!

Yes, there is a grease fitting on the cross; that's what I intended. I'm sure there are u joints with sealed bearings, and no grease fittings, but I know for sure that a 1992 Jeep has grease fittings on the cross. I also used parts from McMaster-Carr as a reference for creating the 3d model and all the ones I saw had grease fittings... Although I didn't look at every available part.

@@bzig4929 In my experience, they do have grease fittings.

A joint with a grease zerk fitting is called greasable, while one without the fitting is called sealed. Typically speaking, a greasable joint is more prone to failure and a sealed joint is more favorable. But, that's all dependent on whether or not the end user is good at regular maintenance and also what the application of the joint is. When applying to vehicles, a stock application (no modifications to engine power output or suspension) with regular maintenance will benefit greatly from a greasable joint. A heavily modified vehicle (even with regular maintenance) won't see the same benefit, due to the cross of the joint being hollow and therefore less strong. It's something to consider when selecting the right U joint for the job