Considering the ambient temperature of 40℃, the maximum operating temperature of the motor should not exceed 120/130℃. The maximum allowable bearing temperature is 95 degrees.
The inner and outer rings and rolling body of rolling bearings should have high hardness and contact fatigue strength, good wear resistance and impact toughness.
The shaft parts of machine tools, especially the spindle bearings, are generally assembled into a body with thrust ball bearings, and rotate at a very high speed, sometimes producing very high heat.
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