Legacy Tankstick trackball bearing replacement

Useful Answer

For an older Tankstick where the trackball still works but no longer spins freely, inspect the roller shafts and bearings before replacing the whole trackball assembly.

Common symptom pattern:

Replacement bearings can restore the feel if the trackball assembly is otherwise intact. Before sending or recommending parts, ask for photos of the unit or trackball assembly so support can confirm the correct version and fit.

If the joystick also feels weak or intermittent, handle that as a separate joystick or switch issue. A worn trackball bearing set does not explain joystick-direction failures.

Source Context

The customer had a roughly 22-year-old Tankstick with a trackball that still functioned but would not spin quickly anymore. Support identified replacement bearings as the likely fix and asked for photos to confirm fit. After receiving the bearing kit, the customer confirmed the trackball rolled like it did when new.