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This Sealmaster SF series flange unit has a cast iron housing with four bolt holes, felt seals, and a concentric locking collar. The four bolt holes provide mounting stability and the housing mounts onto bearing surfaces perpendicular to the shaft axis. The races are coated with black oxide for corrosion resistance and the insert is rated "standard duty" for applications with light to moderate combined radial and thrust loads. This single-row bearing is self-aligning and accommodates misalignments between the shaft and the housing of up to plus or minus 2 degrees. A pin and dimple anti-rotation rivet on the outer ring prevents rotation of the ring in the housing, reducing heat buildup and prolonging the bearing life. The bearing locks onto the shaft with a fluoropolymer-coated concentric locking clamp collar (Skwezloc) and two Torx head cap screws for 360-degree holding power. This lock type reduces vibration, does not mar the shaft, and is suitable for high-speed applications where the shaft rotates in a single or reversing direction. Low friction felt seals on both sides of the bearing help retain lubricant applied at manufacture and help protect against contaminants. Flanged bearing units are suitable for use in industrial and commercial applications including conveyors, fans and blowers, construction machinery, and processing equipment. Mounted bearings combine a bearing mounted inside a housing unit. The bearing housing replaces the need for a casting or weldment to position the bearing securely for reliable operation, and its design determines the type of insert bearing. Insert bearings use rolling elements (ball, cylindrical, spherical, barrel, needle, spindled, or tapered) to maintain the separation between moving parts to reduce rotational friction, and to support radial and axial loads. Available in a variety of materials and mounting configurations, mounted bearings can be one- or two-piece, they can have an extended inner ring and locking device, and they can have seals and end caps that retain lubrication and protect the working parts of the bearing from environmental debris. Mounted bearings support shafts in a variety of mounting configurations (flange block, hanger, pillow block, and take-up block), and are used in a range of applications from light duty shaft guidance on conveyors to road building equipment and crushers. Sealmaster manufactures bearings and bearing accessories. The company, founded in 1938 and headquartered in Elsmere, KY, meets International Organization for Standardization (ISO) standard 9001.