SLS-water pump bearing is that new style of bearing fitting for these requirements. In the fact, it is a kind of simple double-load bearing. The double-load bearing has no inner ring, the race-way of roller is on the shaft directly. The two load bearing forms a whole , both side of the outer ring sealed with seal . At the same load condition, the size of radial load is smaller than other bearings. And the same axial load condition, the ability of load is high than other bearings.