This Rexnord NFC4251-12 4-Bolt flange mount bearing 1-1/2" bore F4-08 is a precision bearing manufactured by Rexnord. It allows a shaft or hub to rotate smoothly under load, reducing friction between moving and stationary parts. Key specifications noted on this listing include 1-1/2" Bore. It is commonly in OEM equipment and MRO replacement for rotating machinery.
