FIELD: engines and pumps.
SUBSTANCE: proposed stage comprises impeller 2 with bush 3 and stator blade 7 composed by bucket 1, top disc 9 with axial bearing 13, bottom disc 11 and blades 10. Top disc 9 with axial bearing 13 is made integral with bucket 1 Note here that said bucket 1 is made from polymer material accommodating metallic carcass 5 that ensures stiffness of said bucket 1.
EFFECT: decreased weight, higher reliability.
25 cl, 3 dwg
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