Timken 48385 Class 3 Double Tapered Bearing Cone

Description:

The Timken 48385 Class 3 Double Tapered Bearing Cone is a precision single-row tapered roller bearing cone with a 5-1/4 inch bore designed to support heavy combined radial and axial loads in demanding industrial rotating equipment. It is commonly installed in rolling mills, industrial gearboxes, mining equipment, construction machinery, heavy-duty axles, and power transmission systems. Maintenance teams, OEMs, and industrial repair specialists use this bearing cone for equipment replacement, bearing rebuilds, retrofits, and preventive maintenance to ensure reliable performance and extended bearing service life.

Applications:

The Timken 48385 Class 3 Double Tapered Bearing Cone is engineered for heavy-duty industrial applications requiring high load capacity, precise shaft alignment, and dependable rotational performance. It is designed to mate with compatible Timken 48320, 48320D, or 48320DC bearing cups and is widely used in rolling mills, industrial gearboxes, mining and aggregate equipment, construction machinery, and heavy-duty power transmission systems where accurate load distribution and long service life are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): 48385
• Manufacturer: Timken
• Product Type: Tapered Roller Bearing Cone
• Bearing Type: Single Row Tapered Roller Bearing (TS)
• Precision Class: Class 3
• Cone Part Number: 48385
• Series: 48300
• Design Units: Inch
• Cage Material: Stamped Steel
• Bore Diameter (ID): 5.2500 in (133.350 mm)
• Bore Size: 5-1/4 in
• Inner Ring Width (B): 1.5625 in (39.688 mm)
• Dynamic Radial Load Rating (C90): 16,500 lbf (73,300 N)
• Dynamic Radial Load Rating (C1): 63,600 lbf (283,000 N)
• Two-Row Dynamic Radial Load Rating (C1): 111,000 lbf (492,000 N)
• Two-Row Dynamic Radial Load Rating (C90): 28,700 lbf (128,000 N)
• Dynamic Thrust Rating (Ca90): 9,060 lbf (40,300 N)
• Static Radial Load Rating (C0): 122,000 lbf (542,000 N)
• Maximum Shaft Fillet Radius: 0.140 in (3.600 mm)
• Shaft Backing Shoulder Diameter – Frontface (da): 5.59 in (142 mm)
• Shaft Backing Shoulder Diameter – Backface (db): 5.83 in (148 mm)
• Effective Center Location: -0.16 in (-4.1 mm)
• Geometry Factor (Cg): 0.121
• K Factor: 1.82
• Weight: 16.15 lb (7.325 kg)
• Compatible Cups: Timken 48320, 48320D, 48320DC
• Typical Applications: Rolling Mills, Industrial Gearboxes, Mining Equipment, Construction Machinery, Heavy-Duty Power Transmission Systems

Common Replacements:

• SKF Equivalent Tapered Roller Bearing Cone
• NTN Equivalent Tapered Roller Bearing Cone
• Timken 48320 Bearing Cup