The PTI F520BL is a genuine PTI cast iron 4-bolt flanged bearing housing designed for industrial machinery applications. This robust housing accommodates a 1-1/4 inch (31.75 mm) shaft, featuring a 3-1/2 inch (88.9 mm) bolt hole spacing. Constructed from durable cast iron, it provides reliable support and protection for bearing inserts in demanding environments. Its compact design, with overall dimensions of 114.3 mm height, 114.3 mm width, and 38.1 mm length, makes it suitable for various mounting configurations.