Huilin cam type CNC turntable adopts cam roller transmission structure inside, which is better than turbine worm structure. The cam and needle roller bearings are preloaded and zero-backlash rolling transmission. Continuous backlash-free characteristics, no sliding friction. Accuracy is not poor due to temperature rise. Positive and negative motion repeatable positioning accuracy is high. Zero backlash, high precision, high rigidity and high efficiency. It can be directly braked and positioned by the servo motor, without the need for external hydraulic or pneumatic brakes, saving energy costs.