TR8x2 Bearing Press

This is a simple bearing press that uses an 8 mm lead screw with 3D printed handles containing brass lead screw nuts. The lead screw nuts I used have M3 threaded holes and were attached to the handles using M3x6 mm socket cap screws.

I made this press to replace the bearings on my full suspension mountain bike. For most frame bearings the 100 mm lead screw worked well. I wanted to also use the press for wheel bearings in the future so I also ordered a 300 mm screw to support up to 197 mm fat bike axle widths. Using the 300 mm screw for tighter operations invovles a lot of threading handles that gets tedious. Having a few lengths to right-size the job is inexpensive and recommended.

For my build I used:

[ReliaBot 2PCs Lead Screw Brass Nut (Acme Thread, 2mm Pitch, 1 Start, 2mm Lead) with 4-M3 Holes for Diameter 8mm T8 Tr8x2 Lead Screw of 3D Printer Z Axis](https://www.amazon.com/gp/product/B08DJ7G98D/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1)

[ReliaBot 300mm T8 Tr8x2