ELECTRIC MOTOR, ROTARY DRIVE SYSTEM, AND HYDRAULIC SHOVEL
To provide an electric motor capable of smoothly supplying lubricant oil to a sliding part, and to provide a rotary drive system and a hydraulic shovel thereof.SOLUTION: An electric motor comprises: a rotor comprising a rotation axis 40 rotating around an axis line O extending in a vertical directio...
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Format: | Patent |
Sprache: | eng ; jpn |
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