Lubricant recovery and protection system for spindle couplings (111a, 111b) for reversible roller stands comprising (a) at least two couplings (111a, 111b) which are arranged one above the other each of them connecting a spindle (114a, 114b) and a working roll forming respective connecting units and which are defining a distance between them correlating with a respective slot between said working rolls, wherein said slot and consequently said distance are variable and wherein at least one of said couplings (111a, 111b) with the respective spindle (114a, 114b) and the respective working roll is variable in height so that: (i) the upper coupling with its respective spindle and respective working roll is variable in height; and/or (ii) the lower coupling with its respective spindle and respective working roll is variable in height; characterized in that the lubricant recovery and protection systems further comprises (b) a casing in which said couplings (111a, 111b) are housed at least partially such that said spindles (114a, 114b) and said working rolls can rotate and wherein in two opposite walls of the casing apertures are provided for the passage of the respective parts of the connecting unit entering the casing, wherein said casing comprises in the respective wall for each part of the connecting unit passing in the casing a wall clement (122a, 122b, 122c, 122d) with said aperture for containing the passing part of said connecting unit wherein at least one wall element (122c, 122d) of the spindle (114a, 114b) side and the respective wall element of the working roll side is variable in height and thus moveable in the direction that defines the distance between the two wall elements (122a, 122b; 122c, 122d) arranged one above the other. (a) at least two couplings (111a, 111b) which are arranged one above the other each of them connecting a spindle (114a, 114b) and a working roll forming respective connecting units and which are defining a distance between them correlating with a respective slot between said working rolls, wherein said slot and consequently said distance are variable and wherein at least one of said couplings (111a, 111b) with the respective spindle (114a, 114b) and the respective working roll is variable in height so that: (i) the upper coupling with its respective spindle and respective working roll is variable in height; and/or (ii) the lower coupling with its respective spindle and respective working roll is variable in height; characterized in that the lubricant recovery and protection systems further comprises (i) the upper coupling with its respective spindle and respective working roll is variable in height; and/or (ii) the lower coupling with its respective spindle and respective working roll is variable in height; characterized in that the lubricant recovery and protection systems further comprises (b) a casing in which said couplings (111a, 111b) are housed at least partially such that said spindles (114a, 114b) and said working rolls can rotate and wherein in two opposite walls of the casing apertures are provided for the passage of the respective parts of the connecting unit entering the casing, wherein said casing comprises in the respective wall for each part of the connecting unit passing in the casing a wall clement (122a, 122b, 122c, 122d) with said aperture for containing the passing part of said connecting unit wherein at least one wall element (122c, 122d) of the spindle (114a, 114b) side and the respective wall element of the working roll side is variable in height and thus moveable in the direction that defines the distance between the two wall elements (122a, 122b; 122c, 122d) arranged one above the other.