FIELD: machine building.
SUBSTANCE: invention relates to a single-component oil-control ring comprising two oil-control ribs (2) and holes (3), which extend from the outer side of the ring to its inner side, wherein ring cross-section varies in circumferential direction. This change is provided by means of internal grooves (5), which cross-section area decreases in direction of the ring back, as well as by changing groove depth located between ribs.
EFFECT: single-component oil-control ring is proposed.
12 cl, 3 dwg
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