Regal Beloit MSF-20 Bearing

Regal Beloit SealMaster MSF-20 mounted ball bearing — a flange-mounted unit designed for four-bolt, cast-iron housings, with a precise 1.25-inch (31.75 mm) bore compatible with common shaft sizes. The bearing uses 52100 bearing steel components and is finished with a black oxide coating; it includes a setscrew lock to secure the shaft and a felt labyrinth seal to help resist contamination while retaining lubrication. The four-bolt flange pattern provides stable, repeatable mounting in conveyors and other industrial machinery where a compact flange-block bearing is required, and the unit is suitable for OEM and aftermarket applications that demand a robust, readily available Sealmaster solution. Part of Regal Beloit's Sealmaster family, the MSF-20 embodies Regal Rexnord's mounted bearing heritage, delivering a durable cast-iron housing and a design oriented toward reliability in demanding industrial settings.