| 摘要 |
PURPOSE: A cooling system for an electromotor is provided to increase the operation efficiency and extend the life span of an electromotor by effectively cooling the heat conducted from a rotating axis to a bearing, and restrain the rise of temperature of the bearing by heat conduction. CONSTITUTION: A cooling system for an electromotor includes a rotating axis(2) installed inside an electromotor(1). Multiple radiation grooves(4) reduces conducted heat toward the bearing(3) by reducing the contact area between the rotating axis(2) and the bearing(3) indented parallel to the outer side of the rotating axis(2). The heat generated from the inside of the electromotor(1) and the rotor(5) is conducted toward the bearing(3) by way of the rotating axis(2). The conducted heat is effectively radiated by the radiation grooves(4) and the rise of temperature of the bearing(3) is restrained to the maximum.
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