Slewing bearings are used in a wide range of applications, including:

1. Cranes: Slewing bearings are used in cranes to support the weight of the boom and provide smooth rotation.

2. Wind turbines: Slewing bearings are used in wind turbines to support the weight of the rotor and provide smooth rotation.

3. Excavators: Slewing bearings are used in excavators to support the weight of the boom and provide smooth rotation.

4. Medical equipment: Slewing bearings are used in medical equipment such as CT scanners and MRI machines to provide smooth rotation.

5. Industrial machinery: Slewing bearings are used in industrial machinery such as conveyor systems and packaging equipment to provide smooth rotation.

6. Robotics: Slewing bearings are used in robotics to provide smooth rotation and support the weight of the robot arm.

7. Military equipment: Slewing bearings are used in military equipment such as tanks and missile launchers to provide smooth rotation and support the weight of the equipment.

8. Mining equipment: Slewing bearings are used in mining equipment such as excavators and draglines to support the weight of the boom and provide smooth rotation.

Overall, slewing bearings are an essential component in a wide range of equipment and machinery that require smooth rotation and support for heavy loads.