half rims 51 a and 51 b adapted to be assembled together for example by means of screws 51 c the half rim 51 a extends radially towards the outside by a one piece ring 55 forming an annular disk whose function is identical to that of disk 5 of the previous embodiment the ring or disk 55 extends radially to the outside of a bucket 52 provided with two scoops 53 separated by a central edge 54 similarly the half rim 51 b extends by a ring or annular disk 56 adapted to support the buckets 52 the rings 55 and 56 are provided with housings 57 58 for receiving the buckets 52 while continuous bands 59 and 60 respectively belonging to disks 55 and 56 define housings 57 and 58 in their outer radial part as elements 51 a and 55 on the one hand 51 b and 56 on the other hand are formed in one piece transmission of the efforts between disks 55 and 56 and the wheel rim 51 is optimal a pelton turbine wheel according to this second embodiment is assembled by bringing the half rims 51 a and 51 b towards each other while buckets 52 are distributed radially in a position close to their final position this making it possible to wedge a shank or tongue 52 a of each bucket 52 between the half rims 51 a and 51 b thus improving the anchoring of the buckets 52 with respect to the wheel rim 51 a.