Steel combined oil ring, Hard Cr plating and lapping on rails working faced, most effective for improving oil consumption performance and durability. for diesel engines used in small-sized passenger cars.
Oil Ring: Consists of three steel components, that is upper and lower rails(spring steel) and one spacer(stainless steel) being held between two rails. Hard Cr plating and lapping on rails working faced, excellent wear resistance.
Salt bath soft nitride of spacer exp., gas nitrided of stainless steel rails.
Low inertia force at the time of high speed operation because of light weight, wide passage area for oil draining, excellent durability.
Salt bath soft nitride of flex exp., gas nitrided of stainless steel rails. Have high flexibility, and keep excellent characteristics on oil control, and excellent durability.
NF type SN flex & gn rails used for high speed gasoline engines.
Salt bath soft nitride of expander, gas nitrided of stainless steel rails. Have high flexibility, and keep excellent characteristics on oil control, and excellent durability.
TX Type SN Exp. & GN rails used for high speed gasoline engines.
Hard Cr Plating and lapping on ring working faced, with small section due to sufficient strength of steel. Then it performs excellent oil control, till the end of the service life with low tension and low friction.
Gas nitrided stainless steel ring, light weight and low friction loss, low absolute tension setting due to the narrow seating surface to the cylinder wall, stable oil consumption even if wall pressure is low.
M type GN oil ring (DV-Σ) suitable for diesel engines.
Ring width is relatively large and coil diameter is increased to obtain high tension.
The working face is Cr plated in the majority of cases, this ring used for medium size, medium speed diesel engines.