Needle Roller Bearings

NIBL’s caged needle bearings, known for their high load-carrying capacity, consist of an outer ring made from through-hardened bearing steel. The cage guides the needles and retains them within the outer ring. These bearings can be used without an inner ring if the shaft journal serving as a raceway has sufficient hardness and the correct surface finish. To achieve the full load capacity of these bearings, a hardness of 58-64 HRC is required.

The basic construction of needle roller bearings includes:

• Integral end flanges on both sides with channel-shaped outer rings.

• Inserted end washers to provide axial retention of the needle roller and cage assemblies.

Needle Roller Bearings with Integral Flanges

The needle roller bearing features a one-piece, channel-shaped outer ring made of bearing-quality steel, heat-treated for maximum load rating.

The integral end flanges provide an axial location for the needle rollers. The bores of these end flanges serve as piloting surfaces for the cages.

A steel cage provides inward retention for the needle rollers, ensuring roller stability and minimizing friction between the cage and the needle rollers. The cage is designed for maximum strength, consistent with the inherently high load ratings of needle roller bearings. The outer ring is equipped with a lubricating groove and a lubrication hole for convenient lubrication of the bearing; however, smaller sizes may not include a lubrication hole.

 Series :-

NB, NBI, NA-49, NA-69