Device and a System for Controlling the Turning of an Object

A device for controlling the turning of an object, said device comprising:

• a shaft having a hollow cylindrical shape with a central axis and a circumferential wall enclosing a first space;
• a sleeve having a hollow cylindrical shape with a circumferential wall, said sleeve being arranged so that at least a portion of its circumferential wall encloses said shaft along at least a portion of the axial extension of said shaft forming a second space between said shaft and said sleeve, said sleeve being axially displaceable and rotationally locked in relation to said shaft and axially and rotationally locked in relation to said object to be turned, whereby movement of the sleeve is transmitted to movement of the object;
• a housing comprising means for rotating the shaft about the central axis, said shaft being axially locked in relation to said housing, said housing further comprising at least one inlet for a lubricant;
• and
• a lubricant collector for collecting said lubricant;
• wherein:
• said circumferential wall of said shaft has at least a first through hole extending from said first space to said second space, and said circumferential wall of said sleeve has at least a second through hole for providing the second space in fluid communication with the lubricant collector;
• and
• said housing is in fluid communication with said second space so that the lubricant can flow from the housing to said second space, and
• wherein said first space is pressurizeable for causing the lubricant in said second space to be displaced through said second through hole and collected in said lubricant collector.