The Timken Company 48120 Tapered Roller Bearing Cup

Description:

The Timken 48120 Roller Bearing Cup is a single tapered roller bearing cup designed to mate with a compatible tapered roller bearing cone for supporting combined radial and axial loads in heavy-duty rotating equipment. It is commonly installed in industrial gearboxes, rolling mills, mining equipment, construction machinery, heavy-duty axles, and power transmission systems. Maintenance teams, OEMs, and industrial repair specialists use this bearing cup for equipment replacement, bearing rebuilds, retrofits, and preventive maintenance to ensure reliable operation and extended bearing service life.

Applications:

The Timken 48120 Roller Bearing Cup is engineered for demanding industrial applications requiring high load capacity, accurate shaft alignment, and dependable rotational performance. It is designed to operate with the compatible Timken 48190 tapered roller bearing cone and is widely used in rolling mills, industrial gearboxes, mining and aggregate equipment, construction machinery, heavy-duty axle assemblies, and other power transmission systems where durability and precise load distribution are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): 48120
• Manufacturer: Timken
• Product Type: Tapered Roller Bearing Cup
• Bearing Type: Single Cup (TS)
• Series: 48100
• Cup Part Number: 48120
• Design Units: Inch
• Bearing Design: Single Row Tapered Roller Bearing Cup
• Outside Diameter (OD): 6.3750 in (161.925 mm)
• Outer Ring Width (C): 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 Diameter – Frontface (Da): 6.16 in (156.00 mm)
• Housing Backing Shoulder Diameter – Backface (Db): 5.75 in (146.05 mm)
• ISO e Factor: 0.51
• Y Factor: 1.19
• Geometry Factor (Cg): 0.156
• Compatible Cone: Timken 48190
• Typical Applications: Rolling Mills, Industrial Gearboxes, Mining Equipment, Construction Machinery, Heavy-Duty Power Transmission Systems

Common Replacements:

• Timken 48190 Cone
• SKF Equivalent Tapered Roller Bearing Cup
• NTN Equivalent Tapered Roller Bearing Cup