Heavy-Duty Tapered Roller Set with Matched Cup and Cone

The SKF BR33021 is a single-row tapered roller bearing set that includes both the bearing (cone assembly) and race (cup) for a properly matched fit. Sized for heavy-duty service with a 105 mm bore, 160 mm outside diameter, and 43 mm overall width, it is built to carry combined radial and axial loads. A tapered roller geometry creates a wide, stable contact zone for robust load distribution, while heat-treated rings and rollers enhance fatigue resistance in continuous-duty cycles. The set delivers a basic dynamic load rating of 68,117 lbf and a basic static load rating of 96,668 lbf. Speed capability is controlled with a 3,200 r/min reference speed and 3,800 r/min limiting speed to maintain thermal stability in demanding conditions.

Precision Surfaces for Consistent Running and Long Service Life

SKF’s logarithmic roller–raceway profiles and ultra-smooth surface finish promote uniform stress distribution, reducing edge stresses for smooth, quiet operation. As a complete, matched bearing-and-race set, the BR33021 simplifies replacement and helps ensure consistent alignment and contact patterns at installation. Metric dimensions per ISO practice aid interchangeability with standard housings and seals, and detailed component widths (inner ring width 43 mm; outer ring width 34 mm) support accurate stack-up during hub or shaft assembly. With high load ratings and carefully defined speed limits, the BR33021 is well-suited for heavy-duty truck wheel ends and industrial machinery where reliability, controlled bearing temperatures, and predictable service intervals are essential.