Hi there,
This is Bogdan from Romania.
I'm a mechanical engineer - specialized in the industrial robotic field, 3D designer and modeler (from time to time and some projects I could make the functional prototype too).
I'm doing product design, industrial design, reverse engineering, ideation, etc.
I have over 15 years experience working on various systems/devices across multiple industries, from concept to launch.
1 - there are more parameters to be monitored on the bearings, and also depends the bearing type, machine type, working conditions etc, etc
2 - you could monitor, temperature, vibrations, oscillation, noise, etc
3 - depending on all the issues above, there could be designed a case which to be fitted with different sensors and have a wifi transmission to the monitor office, but will need more than just - each set of sensors should have its own tag/label/identifier, a mean to determine what sensors are active, a power source etc
Regards
Bogdan