The Alltrux ATX-S406 Steer Axle Outer Wheel Bearing Set replaces industry standard SET406TRB and is engineered for heavy-duty truck FF steer axle wheel end applications. This tapered roller bearing assembly is equivalent to cone 3782 and cup 3720, designed to support the rotational and steering loads placed on front axle hub assemblies in commercial truck operations.

Steer axle wheel bearings play a critical role in maintaining smooth hub rotation, precise steering response, and proper load distribution at the front axle. The outer wheel bearing supports radial and axial forces generated during steering, braking, and uneven road conditions, making durability and dimensional accuracy essential for long-term wheel end reliability.

Manufactured to meet industry-standard performance specifications, this bearing set is suitable for fleet maintenance, front hub rebuilds, and preventive wheel end service on heavy-duty trucks. Proper lubrication, installation, and preload adjustment are essential to ensure optimal bearing life and safe steering axle operation.

Key Features

Industry standard SET406TRB wheel bearing set
Alltrux Part Number: ATX-S406
Equivalent to tapered roller cone 3782 and cup 3720
Designed for FF steer axle outer wheel end applications
Supports steering load handling and smooth front hub rotation
Ideal for heavy-duty truck front axle wheel end service

Technical Specifications

Brand: Alltrux
Part Number: ATX-S406
Industry Set Number: SET406TRB
Cone Number: 3782
Cup Number: 3720
Bearing Type: Tapered Roller Bearing Set (Cone & Cup)
Position: Steer Axle – Outer Wheel Bearing (FF Axle)
Condition: New Aftermarket
Application: Heavy-Duty Truck Front / Steer Axle Wheel End Assemblies

Cross References

INDUSTRY: SET406TRB
TIMKEN: 3782 / 3720
ALLTRUX: ATX-S406