The process to produce a slewing bearing involves several steps, including:

1. Design: design the slewing bearing based on the specific application requirements. 

2. Material selection: select the appropriate material for the slewing bearing based on the application requirements. 

3. Machining: The raw material is then machined to the required shape and size using CNC machines. 

4. Heat treatment: The machined components are then heat-treated to improve their strength and durability. 

5. Assembly: Fitting the raceways, gears, and other components together and securing them with bolts or other fasteners.

6. Testing: Test the slewing bearing to ensure that it meets the required specifications.