FIELD: pump engineering.
SUBSTANCE: ring comprises radial openings and antifriction bushings set in the openings up to the stop. Each antifriction bushing is provided with bead and collar arranged from the side opposite to the bead. The collar abuts against the surface of the ring of the drive. The bushing is made of a material with the shape memory, e.g., polyfluoroethylene resin.
EFFECT: enhanced reliability.
2 cl, 3 dwg
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