| 摘要 |
A chuck assembly includes a housing formed with a hydraulic fluid inlet, a sleeve mounted in the housing and formed with an annular groove, a shaft mounted rotatably in the sleeve and formed with a fluid passage, a chuck unit mounted in the shaft, a piston subdividing a chamber between the chuck unit and the shaft into first and second compartments, and a cooling mechanism having an air inlet formed in the housing, and an air channel formed in the sleeve and in fluid communication with the air inlet and the annular groove.
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