... , Nylon retainer, Steel retainer, Bakelite retainer, etc Features:1. Self-aligning double row spherical roller bearing allows for a high ... the drive shaft.2. Self-aligning ball bearings are constructed with the inner ring and ball assembly contained within an outer ring ... mine, petroleum, paper making, cement, sugar pressing, etc. 3. The self-aligning bearing has two types of bores, namely a cylindrical ...