The Timken Company 48120 Tapered Roller Bearing Cup

The Timken 48120 is a single-row tapered roller bearing cup designed to mate with the Timken 48190 tapered roller bearing cone to support combined radial and axial loads in heavy-duty rotating equipment. Common applications include rolling mills, industrial gearboxes, mining equipment, construction machinery, and other heavy-duty power transmission systems, with maintenance teams and OEMs using it for replacements, rebuilds, retrofits, and preventive maintenance. Key specifications include: MPN 48120; Series 48100; Cup Part Number 48120; outside diameter 6.3750 in (161.925 mm); outer ring width 1.0625 in (26.988 mm); weight 5.2 lb (2.3 kg); maximum housing fillet radius 0.130 in (3.30 mm); housing backing shoulder diameters Da 6.16 in (156.00 mm) and Db 5.75 in (146.05 mm); ISO e factor 0.51; Y factor 1.19; and geometry factor Cg 0.156. Compatible cone: Timken 48190. Common replacements include Timken 48190 Cone, SKF equivalent Tapered Roller Bearing Cup, NTN equivalent Tapered Roller Bearing Cup.