Profile: PSL of America is specialized in providing slewing ring/turntable bearings and different styles of rotary products. Our slewing rings are large diameter bearings designed and are constructed to control various types of loading including axial, radial & tilting moment loads. We have the capability to produce these rings and bearings up to 137" (3,500 mm). Single row tapered roller bearings are able to harness both radial and axial forces. The axial load capacity depends on the degree of the contact angle. These parts are able to control the axial load in one direction only and that is why they are assembled in pairs. The axial clearance or preload designated in these pairs of tapered roller bearings is to be adjusted during assembly.