Timken MM20BS47 QUH Quadruplex Angular Contact Ball Screw Bearing Set

Timken Fafnir MM20BS47 QUH quadruplex ball screw support bearing set is a factory-matched assembly of four precision single-row angular contact bearings designed for ball screw support. The heavy preload QUH configuration delivers high axial stiffness and repeatable shaft positioning while reliably supporting combined radial and axial loads in high-precision motion systems. This quadruplex set is commonly installed in CNC machine tools, ball screw assemblies, industrial automation equipment, precision positioning systems, heavy-duty machine tools, industrial gearboxes, conveyors, and power transmission systems where rigidity and preload consistency matter. The Timken Fafnir MM20BS47 QUH is compatible only as a factory-matched QUH quadruplex configuration; components are not intended to be mixed with unmatched bearings. Technical specifications: Manufacturer Timken Fafnir; MPN MM20BS47 QUH; Bearing Type: precision single-row angular contact ball bearings (quadruplex set); Series MM-BS (Ball Screw Support); Design QUH (Quadruplex, Heavy Preload); Bore 20 mm; Outside Diameter 47 mm; Width 15 mm per bearing; Total set width 60 mm; Cage: phenolic outer land riding; Material: bearing steel with steel balls; Load Type: combined radial and axial loads; Dynamic Rating: 5,600 lbf (24,900 N); Static Rating: 5,600 lbf (24,900 N); Dynamic Axial Rating: 9,100 lbf (40,500 N) for the preloaded set.