Collection: Needle Roller Bearings

Needle roller bearings are compact radial bearings featuring cylindrical rollers with a length-to-diameter ratio typically exceeding 2.5:1. This slender roller design enables extremely thin cross-sections while maintaining high radial load capacity, making them ideal where space is limited. Common configurations include drawn cup (stamped outer ring), machined ring, and caged assemblies, with options for sealed or open designs depending on contamination protection needs.

Selection depends on bore diameter, outer diameter constraints, and load requirements. The designation system typically indicates nominal dimensions (e.g., NK for machined ring, HK for drawn cup) followed by bore and width values. These bearings excel in applications such as connecting rods, rocker arms, gear pumps, small gearboxes, and universal joints where radial space is constrained but high load capacity is essential.