Timken 42343-DE Double Row Tapered Roller Bearing Cone 3.43" Bore ID

Description:

The Timken 42343-DE is a precision double-row tapered roller bearing cone designed for use with compatible Timken double bearing cups in heavy-duty industrial, mining, construction, and power transmission applications. Its double cone (TDI) configuration provides increased bearing stiffness, higher load capacity, and improved shaft rigidity while supporting combined radial and axial loads. Manufactured from premium bearing steel with a stamped steel cage, it delivers reliable performance in demanding operating environments.

Applications:

The Timken 42343-DE double cone is commonly used in industrial gearboxes, rolling mills, mining equipment, construction machinery, heavy-duty transmissions, and other industrial power transmission systems. It is designed to pair with compatible Timken 42587 or 42590 bearing cups to form a complete double-row tapered roller bearing assembly capable of handling heavy radial and thrust loads.

Technical Specifications:

• Manufacturer Part Number (MPN): 42343-DE
• Manufacturer: Timken
• Product Type: Double-row tapered roller bearing cone
• Bearing Type: Double cone (TDI)
• Series: 42000
• Cone Part Number: 42343-DE
• Bore (Inside Diameter): 3.438 in (87.312 mm)
• Cone Width: 5.000 in (127.000 mm)
• Cage Material: Stamped steel
• Bearing Material: High-carbon chromium bearing steel
• Number of Rows: Double
• Precision Class: ABMA Class 4
• Maximum Shaft Fillet Radius: 0.030 in (0.800 mm)
• Dynamic Load Rating: 60,200 lbf
• Static Load Rating: 108,600 lbf
• Weight: 10.2 lb (4.63 kg)
• Compatible Cups: Timken 42587, 42590

Common Replacements:

• SKF 42343-DE
• NTN 42343-DE
• Koyo 42343-DE