Hollow shafts are the elements in a mechanical machine that transmit rotary motion. The hollow shaft is having a through hole which is concentric with the external diameter of the shaft. A hollow shaft is used in place of a solid shaft when the design calls for a weight reduction. Given here is the diameter of hollow shaft formula to calculate the hollow shaft diameter. These kinds of hollow shafts are most commonly used in locomotive Cardan shafts.

Inner Diameter = Diameter Ratio × Outside Diameter

Outside Diameter = Inner Diameter / Diameter Ratio

The hollow shaft is having a through hole which is concentric with the external diameter of the shaft. Use this Diameter of hollow shaft formula to perform diameter calculations on your own.