Abstract: The invention relates to a set of mechanical means specifically designed to be incorporated into a delta robot, forming a machine that can gum lids at a much greater speed than those traditionally used and with substantially greater efficiency. In some cases, the machine is defined by a pair of arms, the ends of which includes a rectangular machined zone housing a stop element that provides a connection with a bolt. In some cases, the bearings are inserted on both sides of the machined zone by means of a bore-hole characterised in that it extends from the inner portion outwards, such that the hole is not a through-hole along its entire length and the bearings abut against the outer wall of the arm.