Question

what is the rotary system ​

Answer 1

The rotary machine switching system, or most commonly known as the rotary system, was a type of automatic telephone exchange manufactured and used primarily in Europe from the 1910s.

Answer 2

The rotary system includes all of the equipment used to achieve bit rotation. ... The main parts of the rotary system with a rotary table are the swivel, kelly, and drillstring. The rotary swivel serves two important functions in the drilling process.