Timken 74539TD Double Row Tapered Roller Bearing Cone

Description:

The Timken 74539TD double row tapered roller bearing cone is a precision matched inner race assembly designed for double row tapered roller bearing configurations that support exceptionally high combined radial and axial loads in heavy-duty industrial equipment. Commonly installed in rolling mills, mining machinery, industrial gearboxes, heavy-duty conveyors, construction equipment, and large power transmission systems where maximum load capacity, shaft rigidity, and long service life are essential. Maintenance teams, OEMs, and system integrators use this double row bearing cone for equipment repairs, bearing replacements, retrofit projects, and preventive maintenance to maintain reliable operation in demanding industrial environments.

Applications:

The Timken 74539TD double row tapered roller bearing cone is engineered for use with compatible Timken double cup assemblies in TDIT and TDITE bearing configurations. Its double row design provides superior load distribution, increased rigidity, and enhanced resistance to shock and vibration, making it ideal for steel mills, mining equipment, heavy industrial drives, paper mills, aggregate processing equipment, and other severe-duty rotating machinery.

Technical Specifications:

• Manufacturer Part Number (MPN): 74539TD
• Manufacturer: Timken
• Product Type: Double Row Tapered Roller Bearing Cone
• Bearing Type: TDIT/TDITE Double Row Tapered Roller Bearing Cone
• Cone Part Number: 74539TD
• Series: 74000 Series
• Design Units: Inch (Imperial)
• Material: Through-Hardened Chrome Steel
• Bore Diameter (ID): 4.970 in (126.24 mm)
• Cone Width (B): 4.870 in (123.70 mm)
• Configuration: Double Row Matched Cone Assembly
• Cage Type: Stamped Steel Cage
• Maximum Shaft Fillet Radius: 0.030 in (0.8 mm)
• Shaft Backing Diameter: 4.21 in (106.9 mm)
• Housing Backing Diameter: 5.28 in (134.0 mm)
• Weight: 8.0 lb (4.0 kg)
• Compatible Bearing Cups: Timken double cups for TDIT/TDITE assemblies (application dependent)
• Typical Applications: Rolling mills, mining equipment, industrial gearboxes, heavy conveyors, construction machinery, paper mills, and power transmission equipment.

Common Replacements:

• SKF 74539TD
• NTN 74539TD
• KOYO 74539TD