Heavy-Duty Cone for Reliable Wheel-End Service

The SKF BR663 is a tapered roller bearing inner race (cone) engineered for demanding truck axle and industrial applications. Featuring a 3.25 in bore (ID) and 1.625 in width, this cone is built to support substantial combined loads while maintaining consistent endplay. SKF’s precision taper geometry and ultra-smooth, ground raceway finish help distribute radial and thrust loads across a wide contact area for stable, quiet operation. Heat-treated construction enhances wear resistance and durability under high loads and continuous duty. Interchange compatibility includes Perfect Circle 663, Sealed Power F663, Timken 663, and PAI HBG-7520, among others, simplifying cross-fleet maintenance.

Performance, Compatibility, and Service Notes

SKF’s tapered roller bearing design is recognized for dependable load carrying and predictable adjustment, enabling straightforward setup of bearing preload/endplay in both non-driven front and drive axle positions. The BR663 cone is rigorously tested to meet or exceed industry requirements and SKF’s quality standards, supporting long service intervals in heavy-duty trucks and industrial equipment. This part is sold individually as the cone (inner race assembly); pair with the correct matching cup (outer race) to complete the bearing set. Typical application references include Eaton 20801 axle systems with 23,000 lb capacity. For best results, follow OEM wheel-end procedures for inspection, lubrication, and adjustment during installation.