Drag chain is often used to protect wires and cables in motion. It is a type of machine tool accessory. As a highly flexible, bending-resistant connection and control device, the number of continuous bending and frequent movements can exceed five hundred times under medium, high, and conventional mechanical stress. More than 10,000 times, the bending radius design of the drag chain is relatively strict, because whether the bending radius meets the standard has the most direct impact on the stability and life of the drag chain. When ordering products, buyers also need to check the length, length, and length of the drag chain. Specific parameters such as width, inner height, inner width, and bending radius must be professionally understood. Wrong selection will affect the operation of the entire equipment. So how to calculate the bending radius of the drag chain?