At what temperature range can operate Schneider Electric servo motors?
BSH, BMH and SH3 motors can work in temperature range -20°C to 40°C (more with derating). The reason are mechanical tolerances in bearings and the grease that does not work good at such low temperatures.
More relevant details can be found in motor manuals.
BSH: https://www.se.com/us/en/download/document/0198441113837-EN/
BMH: https://www.se.com/us/en/download/document/0198441113749-EN/
SH3: https://www.se.com/in/en/download/document/0198441113987/