TIMKEN 3958-D TAPERED BEARING CONE W 39520 Cups And Collar, DOUBLE ROW BEARING

Description:

The Timken 3958-D with 39520 cups and collar is a double-row tapered roller bearing assembly used in heavy-duty rotating equipment and industrial power transmission systems. Commonly installed in industrial gearboxes, rolling mills, mining equipment, construction machinery, and heavy-duty shaft assemblies where high radial and axial loads require rigid shaft support. Maintenance teams, OEMs, and system integrators use this double-row bearing assembly for equipment repair, bearing replacement, and drivetrain retrofits to improve load capacity, simplify installation, and extend service life.

Applications:

The Timken 3958-D with 39520 cups and collar is designed for demanding industrial applications requiring high load capacity, precise shaft positioning, and enhanced rigidity. Its double-row tapered roller bearing configuration makes it suitable for industrial gearboxes, rolling mills, mining machinery, material handling equipment, construction machinery, and other heavy-duty rotating systems operating under combined radial and thrust loads.

Technical Specifications:

• Manufacturer Part Number (MPN): 3958-D / 39520
• Manufacturer: Timken
• Product Type: Double-row tapered roller bearing assembly
• Bearing Type: TDI (Tapered Double Inner) double-row bearing
• Double Cone Part Number: 3958-D
• Cup Part Number: 39520 (2 cups)
• Includes: Bearing collar
• Design Units: Imperial
• Bore Diameter: 2.2500 in (57.150 mm)
• Outside Diameter: 4.4375 in (112.713 mm)
• Double Cone Width: 2.8660 in (72.796 mm)
• Cup Width: 0.9375 in (23.813 mm each)
• Cage Material: Stamped steel
• Dynamic Radial Load Rating (C1): 54,300 lbf (242,000 N)
• Static Radial Load Rating (C0): 43,000 lbf (191,000 N)
• Dynamic Thrust Load Rating (Ca90): 5,570 lbf (24,800 N)
• Weight: Approximately 8.0 lb (3.6 kg)

Common Replacements:

• SKF 3958-D/39520
• NTN 3958-D/39520
• KOYO 3958-D/39520