| 摘要 |
A device for a single-acting hydraulic cylinder ( 1 ) designed to lift or pull a load upon the existence of an oil pressure on the rod-side of a cylinder piston ( 7 ), where the cylinder bottom ( 15 ) of the hydraulic cylinder ( 1 ) is provided with a drainage outlet ( 27 ) for leakage fluid, as well as an air inlet ( 29 ).
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