SealMaster MSF-31C Flange-Mount Ball Bearing Unit

The SealMaster MSF-31C Flange-Mount Ball Bearing Unit is a four-bolt flange-mounted, non-expansion (fixed) bearing cartridge with a 1-15/16 in bore, engineered for reliable, fixed-position mounting in light- to medium-duty equipment. It features a cast-iron housing that houses a 52100 bearing steel inner race, with a black-oxide finish, and uses a setscrew locking arrangement paired with a single lip contact seal for basic containment. The flange pattern provides 5-1/8 in bolt-center-to-center spacing, and the overall geometry measures approximately 6-3/8 in in length with a 2-5/16 in depth, accommodating standard MSF-series configurations. Rated for a dynamic load of 9,752 lb and a static load of 6,601 lb, it supports up to 3,250 rpm and operates across a temperature range of -20 to 250 degrees Fahrenheit, with an uncoated surface suitable for typical industrial applications. This MSF-31C delivers a robust flange-mounted bearing solution for rotating shafts in conveyors, machinery, and other equipment where a sealed, reliable, four-bolt mounting is required.