[wengejor]

Not sure about the Taiwan stuff, but usually the Bosch stuff for the US market is produced in Toluca Mexico. The European Bosch stuff is produced in Buehl Germany and the Brazilian stuff is produced in Sao Paulo. A Bosch motor will have a Bosch sticker on it with a bunch of numbers that will tell you where it was produced and the date it came off of the line.

I used to do tests with motors running constantly for several days with current levels less than 10 amps, which requires an external cooling fan. I always used the touch test to check if a motor was too hot. If you can't hold your finger on the motor for at least a few seconds then it's probably hotter than 60deg C...which is most likely not good. I'm really not sure what temperature the winding insulation starts to melt...I wasn't about to have a fire in the lab.