mounting arrangement of two coaxial shaft lines

In an arrangement with two lines of shafts (15, 16) concentric with one exceeds the other, a seal support sleeve (38) laid therebetween is conical and is supported on a spacer (40 ) of the outer shaft line, so that a nut (19) for mounting the front end accessible from the rear through the gap (43) between the two lines of shafts (15, 16 ), which allows to unscrew the nut and to disassemble the externe.L'invention shaft line can be applied to the front bearings of the high pressure shaft lines of gas turbines and allows to disassemble the body high pressure from the rear, without removing further equipment such as a fan at the front of the machine. Mounting a pinion (20) of PTO is not compromised.