Tapered roller bearings are separable bearings

Tapered roller bearings are separable bearings, inner and outer rings have tapered raceway. These bearings are loaded according to the number of columns roller into single row, fatigue testing machine  double row and four row tapered roller bearings, such as different structural types. Single row tapered roller bearings can support radial load and axial load in one direction. When the bearing radial load, will produce an axial component, so when you need another can withstand axial force vibration measurement  in the opposite direction of the bearing to be balanced.

The ability to single row tapered roller bearing axial load depends on the
contact angle, ie the angle of the outer ring raceway, the greater the angle,
the greater the axial load capacity. Tapered roller bearings are up to the
amount of single row tapered roller Bearing life testing machine bearings. In the car's front wheels, and
spend the small size of the double row tapered roller bearings. Four tapered
roller bearings used in large-scale cold rolling mill and other heavy machines.