... & large stock Professional product solutions 1. Bearing units:Tapered roller bearings consist of four interdependent components: the cone, or ... cup, or outer ring; the tapered rollers, or rolling elements; and the cage, or roller retainer2. Bearing material:Chrome steel, ... this series:1): Single-row tapered roller bearing (Metric size, Inch size)2): Double-rows tapered roller bearing or Three-rows, ...