Once I finally printed one of Emmett's bearings, I was really impressed by the overall function. This version has a couple of distinctive elements. First of all, the normal involute gear tooth was replaced with a home-grown rounded tooth that mimics belts drives more than normal gear profiles. The second change is the replacement of the herringbone pattern with a sinusoidal pattern.
One can ask "why?"... And I will answer to say it is simply an idea that may or may not have advantages. Style points are always good too :)
As to the design; it is a little larger that Emmett's bearing but the tooth-count is the same. It also has the same center hex size. Overall it is a bit thicker and slightly larger in diameter. I wasn't going for direct replacement. Overhangs are managed to 45 degrees and tooth-clearance is set to 0.25mm.
The tooth pattern was extruded using a sine curve for the radial offset. The tooth pattern is based on a pin-style drive gear. Each profile has tangent circles around the perimeter (twice the tooth count) and clearances are established from these.
Thinking on advantages over the herringbone does factor in one element... the clearance in the thrust direction is reduced. The math should be pretty straight forward to understand just how much.
Longer high torque planetary systems may also have a strength advantage based on the greater contact area with the gear tooth. This could make for some interesting experiments.