Timken 44348 Tapered Roller Bearing Cup 3.4843" OD 0.6875" Wide

Description:

The Timken 44348 is a single cup tapered roller bearing designed for use with compatible Timken tapered roller bearing cones in heavy-duty industrial, automotive, and power transmission applications. It serves as the outer race of a single-row tapered roller bearing assembly, providing high radial and axial load capacity, precise shaft alignment, and long service life. Manufactured from high-quality bearing steel, it delivers reliable performance in demanding operating environments.

Applications:

The Timken 44348 bearing cup is commonly used in gearboxes, transmissions, axles, agricultural equipment, construction machinery, mining equipment, and industrial power transmission systems. It is designed to pair with compatible Timken bearing cones, such as the 44131 cone, to support combined radial and thrust loads while maintaining accurate bearing adjustment and alignment.

Technical Specifications:

• Manufacturer Part Number (MPN): 44348
• Manufacturer: Timken
• Product Type: Tapered roller bearing cup
• Bearing Type: Single cup (TS)
• Series: 44000
• Cup Design: Standard single cup
• Cup Part Number: 44348
• Outside Diameter (OD): 3.4843 in (88.501 mm)
• Cup Width: 0.6875 in (17.463 mm)
• Maximum Housing Fillet Radius: 0.060 in (1.52 mm)
• Housing Backing Shoulder Diameter – Frontface (Da): 3.340 in (84.10 mm)
• Housing Backing Shoulder Diameter – Backface (Db): 2.950 in (74.93 mm)
• Weight: 1.5 lb (0.70 kg)
• Material: High-carbon chromium bearing steel
• Compatible Cone: Timken 44131

Common Replacements:

• SKF 44348
• NTN 44348
• Koyo 44348