Ask these questions:
What is the industrial application High/lo speed? Hi torque? Is it a continuous load? Shock loading? Direction changes? Actual gear teeth amount? What gear tooth size standard?
Those are needed to provide an actual estimate to gear life.
What 3D printing process?? FDM? SLS? Etc.
Is it feasible? Possibly, with a SLS printed gear set, relatively low speed and low torque with a continuous load.. also, assuming you can get the center holes in the right position and get your gear center-to-center properly aligned. Use some standard gear life calculations and maybe de-rate it to 50%. 3D printed materials behave differently than conventional "equivalent" material.
Off the cuff, for an industrial application, I would find a readily available molded plastic gear set rather than print a set. You need something reliable and readily available.