in order to reduce friction and improve stability.

the glass turntable is used for catering service or displaying articles, and needs to be able to rotate smoothly. The auxiliary wheel directly touches the ground, which will increase the friction and make the turntable difficult to rotate. In addition, the auxiliary wheel directly contacts the ground, and the turntable is unstable due to uneven ground or other reasons, and even tilts or falls over.

the auxiliary wheels of the glass turntable are kept balanced and stable by other supporting structures. This can make the turntable rotate more smoothly, and it is also safer and more reliable.