The raceways in these bearings are positioned off-center to handle angular (combined radial and thrust) loads.. Double-row bearings handle thrust loads in both directions.. Open bearings dissipate heat more efficiently than shielded and sealed bearings.. Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.

Single row ball slewing bearing are four point contact bearing, it has only one row of steel balls. They could bear axial load, radial load and tilting moment at the same time. One row four point contact ball slewing rings are composed of two seat rings, which design in compact structure and light weight, steel ball contact with the circular raceway at four points.Single row deep groove ball bearings are the most widely used roller bearing type in the world due to their versatility and overall performance. They are characterized by having deep raceway grooves in which the inner and outer rings have circular arcs of slightly larger radius than that of the balls. They also have non-separable rings.