J mangsun & co manufactures a range of high precision industrial bearings. The double row taper roller bearings are widely used in heavy industries like steel plants for conveyor systems. The main advantage is, within a given space, this type of bearing will take maximum radial load. Generally, they have one double cup [outer race] and two cones [inner race]. To achieve the required radial and axial clearance, a spacer is provided between the cones. Ccc the nut can be fully tightened and locked, no fine adjustment s necessary. There are several advantages.