Why is the auxiliary wheel of the glass turntable suspended?

So as 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, even tilted or overturned due to uneven ground or other reasons.

The auxiliary wheel of the glass turntable is balanced and stable through other supporting structures. This can make the turntable rotate more smoothly and be safer and more reliable.