SCHIFFSPROPELLER.

摘要

PCT No. PCT/AT87/00056 Sec. 371 Date Apr. 5, 1989 Sec. 102(e) Date Apr. 5, 1989 PCT Filed Oct. 9, 1987 PCT Pub. No. WO88/02719 PCT Pub. Date Apr. 21, 1988.A ship propeller arrangement (1), in particular for motor boats, has a propeller being operated with super-cavitative rotating speed and having its propeller blades (5) provided with step bearings (7) being swivelable around threaded bolts (6), which are screwed into a propeller star (8) being put onto the propelling shaft (2). Rotation of each propeller blade (5) is effected by a hollow shaft (17) surrounding the propelling shaft (2) and by bevel gears (14, 15) being put onto the hollow shaft as well as onto the propelling shaft and being in meshing engagement with a cogging (12) of the respective step bearing (7). For the purpose of limiting the forces acting in radial direction, the outer surface of each step bearing (7) is kept free. The step bearing (7) is held in radial direction by a shoulder (9) of the threaded bolt (6) (FIG. 2).