DWCT
The structure of ordinary oil ring is generally made of alloy cast iron.There is a groove in the middle of the outer round surface, in the bottom of the groove processing a lot of through the oil discharge holes or slit.The combined ring is composed of upper and lower scraper and lining spring producing radial and axial elastic force.This oil ring blade is very thin, large specific pressure on the cylinder wall and strong oil scraping; upper and lower blade independent, good adaptability to the cylinder; small quality; large oil return access.Therefore, the combined oil ring is widely used in high-speed engines.Generally, 1~2 oil rings are used on the piston
