The angle of contact in angular contact ball bearings is a critical design parameter that influences the bearing's load-carrying capacity, precision, rigidity, and high-speed capability. It allows the bearing to operate efficiently under dynamic and oscillating loads, making it suitable for applications where precise motion control and accurate load distribution are essential.

   - Cylindrical Roller Bearings: Cylindrical roller bearings are used in applications where high radial load-carrying capacity, rigidity, and precision are essential, such as in machine tool spindles, electric motors, and industrial equipment.

   - Taper Roller Bearings: Taper roller bearings are commonly used in applications where both radial and axial loads need to be supported, such as in automotive, industrial gearboxes, and heavy machinery.