Power Train Components 3984 Tapered Roller Bearing Cone 2.625 in. Bore

The Power Train Components 3984 is a single-row tapered roller bearing cone designed for heavy-duty axle, differential, and trailer wheel end applications. Built to industry-standard dimensions, this cone mates with the matching 3920 cup (sold separately) to form a complete tapered roller bearing assembly capable of handling combined radial and axial loads.

Key Features:

• Tapered roller design efficiently manages both radial and thrust loads simultaneously
• Bore (Inner Diameter): 2.6250 in. (66.675 mm)
• Cone Width: 1.183 in. (30.048 mm)
• Outer Diameter: 4.4375 in. (112.712 mm)
• Static Load Rating: 42,000 lbf
• Dynamic Load Rating: 28,100 lbf
• Operating Temperature Range: -40°F to 250°F
• Case carburized steel construction for fatigue resistance and long service life
• Interchangeable with industry-standard 3984 cone numbers across major bearing brands
• Compatible with 3920 and 3925 series cups (sold separately)

The 3984 bearing cone is widely used in medium and heavy-duty truck axles, trailer wheel ends, and industrial drivetrain assemblies rated from 12,000 to 15,000 lb. axle capacities. It meets standard inch-series tapered roller bearing dimensions for straightforward replacement and cross-brand interchangeability.