Tapered roller bearing 40 x 78 x 21.35 mm, compatible with TOYOTA OE 90366-40074. Branded RICH, built for precision and durability.
The ST4078-3 RICH is a compact single row tapered roller bearing designed to support combined radial and axial loads with precision. With dimensions of 40 mm bore, 78 mm outer diameter, and 21.35 mm total width, it is ideal for automotive applications such as wheel hubs and transmission systems.
Its tapered geometry ensures optimal load distribution and alignment. The outer ring width of 16.5 mm and inner ring width of 18 mm provide secure fit and stability. Manufactured in China under the RICH brand, this bearing is interchangeable with OE reference TOYOTA 90366-40074, offering a reliable alternative to original components.
Transparency Note: This bearing is manufactured under the RICH brand. The code ST4078-3 and listed OE reference are used solely for compatibility identification and do not imply any affiliation with TOYOTA or other brands. The product is clearly marked with its actual brand and country of origin.
Data sheet
Tapered roller bearing 40 x 78 x 21.35 mm, compatible with TOYOTA OE 90366-40074. Branded RICH, built for precision and durability.
