Does the cooling fan work at low temperatures have an impact?

Generally, the environment where the cooling fan is used is a high temperature environment, but some special products need to work at room temperature. In low temperature areas, the cooling fan also needs to work. Then, can the cooling fan work at a low temperature such as -20 degrees? u003cbru003e u003cbru003e u003cbru003e 　　 For customers with such requirements, we will design fans that can work at low temperatures for customers. Normally, ordinary oil-bearing fans may not work if they are below -10 degrees. Lubricating grease has It may freeze. u003cbru003e u003cbru003e u003cbru003e 　　 Our design is that ISC ball bearings imported from Japan can work normally at a low temperature of -20 degrees, but the speed will be lower, and the temperature will be lower, causing the bearing to solidify and freeze, and the shaft core cannot rotate. At this time, a short circuit will be formed inside the cooling fan, the motor temperature rises, the temperature rises, the ice around the shaft core melts, and the cooling fan can run