Use a wireless barcode reader to load the file that contains the engine number. The number is a 4-digit number + another corresponding to the bearing number (1, then 2...3...4...5...6...).
Since the weight and dimensions of the parts are important, the operator moves around the part to mark it. The marking machine must be manageable and precise. Moreover, the absence of electrical wires eliminates the risk of potential fall due to an obstacle.