Description
Support maximum payload distribution and protect your commercial car carrier from spindle shear with this premium replacement inner wheel bearing cone.
The Traction Part Number 3984 (interchanging with Dexter factory code 031-019-02) is a high-capacity tapered roller bearing cone engineered explicitly for extreme-duty commercial utility trailers. Manufactured from high-tensile alloy steel, this individual inner race assembly contains precision-ground rollers and a heavy-gauge stamped steel cage. Designed to handle intense vertical loads and sudden cornering forces, it maximizes mechanical efficiency inside the hub cavity, drastically reduces thermal build-up, and ensures smooth axle tracking across multi-car vehicle transport routes.
Fleet Application:
Sun Country Trailers: This inner bearing cone is the exact factory-spec fitment required for the large spindle position on Sun Country car carrier trailers and low-profile multi-car haulers running high-capacity axles.
Technical Specifications & Fitment:
Industry Part Number: 3984 (Cone)
Bore Diameter (ID): 2.625 Inches
Axle Position: Inner Hub Assembly
Axle Weight Capacities: Engineered for 12,000 lbs. to 15,000 lbs. commercial trailer axles.
Hub Compatibility: Fits perfectly within industry-standard low-profile 9281X commercial brake drums and popular Dexter hub series castings (including the 8-214 and 8-216 low-profile lines).
Performance Features:
Case-Hardened Alloy Steel: Formulated from high-grade structural steel to resist metal fatigue, spalling, and surface deformation under max-load hauling limits.
True-Taper Alignment: Crowned raceways and rollers ensure an even load distribution, minimizing heat production and extending operational life.
System Integration: Pairs seamlessly on the axle spindle alongside the 1056HD unitized wheel seal and the 28682 outer wheel bearing.
Interchangeable System Fitment: Seats perfectly inside the industry-matching 3920 inner bearing cup (race).