This Koyo TRB-1423 is a thrust washer designed to work with their NTA-series thrust needle roller and cage assemblies. Basically, it's used when the parts next to the bearing can't act as the raceways themselves. It's made from through-hardened chromium steel, so it's tough and can handle heavy loads without deforming. The raceways are flush-ground, which means it can run at higher speeds and with more accuracy than unground versions. The specs are inch-sized: 7/8 inch inner diameter, 1-7/16 inch outer diameter, and 1/16 inch width. If you're rebuilding machinery, transmissions, or any assembly that uses Koyo Torrington thrust bearings, this is the exact replacement part you need. A high-quality, precision component for industrial or automotive applications.
