| 摘要 |
The invention relates to an operating cylinder (10) for a gearbox (4), comprising a cylinder housing (14) which is provided with first and second endwalls (16, 18) to form a space (20); a piston (22) which is provided with a piston rod (24) and divides said space (20) into first and second spaces (34, 36); an aperture (28) in the first endwall (16) through which the piston rod (24) is arranged to extend; a first port (38) in communication with the first space; and a second port (40) in communication with the second space (36), through which ports (38, 40) a fluid is supplied and removed in order to move the piston (22) relative to the cylinder housing (14). The piston (22) is provided with an axial cavity (70) which is arranged to abut by means of a plain bearing (72) against a protrusion (74) situated on the second endwall (18). The invention relates also to a gearbox (4) provided with such an operating cylinder (10), and to a vehicle (1) provided with such a gearbox (4) |
