Addressing the issues of corrosion and wear caused by sulfur-containing gasoline in fuel pumps with durable sintered bearings.

The fuel pump bearings continuously rotate while always being immersed in gasoline. Particularly with fuels containing impurities such as sulfur, the challenges in material selection that affect long-term durability are whether "the bearing performance will not degrade due to corrosion" and "whether wear can be minimized even in harsh sliding environments." DIA-MET's B095 is a corrosion-resistant sintered bearing made of a Cu-Ni-P-C alloy, designed for use in sulfur-containing gasoline. Compared to the conventional material B031, it enhances both sulfur resistance and wear resistance. ■ Corrosion resistance to sulfur-containing fuel ▼ Conducted a 200-hour immersion test in sulfur-added gasoline (333K) ▼ B095 maintained a good appearance even under conditions where corrosion was observed with the conventional material B031 ■ Wear resistance ▼ Reduced wear amount in durability tests with a contact pressure of 1.4 N/mm² and a sliding speed of 1.8 m/s ▼ The condition of the counterpart shaft after testing was also good ■ Application examples ▼ Fuel pump Considering the differences in fuel quality, this can be utilized for material selection and design considerations for fuel pump bearings that require measures against both corrosion and wear. Documents summarizing the sulfur resistance and wear resistance tests of B095 compared to conventional materials, as well as more detailed benefits from its introduction and utilization in fuel pumps, can be downloaded from the link below.

basic information

Price range

Delivery Time

Applications/Examples of results