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Cake day: August 25th, 2025

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  • In general, yes. Using ceramic static bearings is standard for trackballs because it is more smooth than the ball just grinding against plastic or something.

    This design for the trackball holder is made to use three BTUs as the primary bearings, then includes a spot for a single static bearing that just serves to add stability. That static bearing does really feel optional here, as the trackball touches just the three BTUs 99% of the time. Quick movements that jerk the ball a bit and make it touch the static bearing are rare, and could probably just be avoided by adjusting your pointing technique to just not let that happen.

    Here is a blog post comparing different types of common trackball bearings: https://kbd.news/Trackball-bearing-comparison-1757.html