Elecom HUGE trackball bearing replacement

This video shows disassembly, ball bearing replacement and reassembly of the trackball.

The Elecom Huge trackball comes with synthetic ruby bearings that the main ball rolls around on. These are reasonably smooth but they can exhibit a bit of "stiction" when fine movements are required. Replacing these balls with better bearings can improve the feel of the ball and make small movements far easier. After this procedure it is perhaps the best trackball available today.

Replacement bearing balls can be found online, look for G10 or G5 rated balls sized 2.5mm. This comes from the standard DIN5401 - a lower G number means the bearing is closer to a perfect sphere, so if the seller's rating is accurate a G5 bearing is roughly twice as good as G10.

The mat I used is found many places under many brand names but a lot of them are called "S-180"". Here''s one at Amazon AU: https://amzn.asia/d/4yESWnB