Rexnord FB315T 10479791 FNFB Flanged Bearing Housing

Rexnord FB315T FNFB Flanged Bearing Housing, part number 10479791, is a fixed four-bolt flange housing in Rexnord’s FB family designed to enclose a 3-15/16 in bore bearing cartridge. The unit uses a cast-iron housing and a square four-bolt flange mounting interface, providing a rigid, accurately aligned platform for shaft loads in demanding machinery. It is intended to be paired with compatible Rexnord cartridge bearings to form a compact, ready-to-mount bearing assembly that delivers reliable radial support with a flange-mounted footprint. This fixed (non-expansion) housing accommodates the standard four-bolt Rexnord cartridge inserts used across Rexnord’s flange-bearing systems, enabling straightforward replacement and consistent performance when paired with approved inserts and end caps. The FB315T housing is part of a modular system that can be integrated into existing equipment with Rexnord’s documented maintenance practices, ensuring compatibility with Rexnord’s line of seals, lubricants, and installation guidelines.