- Spherical Roller Bearings: Spherical roller bearings are designed to accommodate heavy radial and axial loads, as well as misalignment and shaft deflection. They are commonly used in applications where high load capacity and the ability to compensate for misalignment are essential, such as in heavy machinery, mining equipment, and industrial gearboxes.

   - Thrust ball bearings are specifically designed to support axial loads, which are forces acting parallel to the shaft's axis. They are used in applications where the primary load is axial, such as in automotive transmissions, machine tool spindles, and thrust applications.

These four basic parts work together to enable the tapered roller bearing to support radial and axial loads, provide precise motion control, and withstand the demands of various applications.