The assembly line’s pneumatic cylinder housing is fitted with the Gerbi spare parts set to restore its sealing performance during routine maintenance. Technicians remove the cylinder, replace the worn inner and outer rings, and re‑install the unit, allowing the actuator to generate precise linear motion for positioning conveyor belts and pick‑and‑place robots. By renewing these rings, the cylinder regains its ability to maintain consistent pressure, which is critical for synchronized valve timing and for preventing leaks that could disrupt the tightly timed sequence of an automated packaging cell. The refreshed cylinder is then calibrated by the control engineer, who verifies that the motion profile matches the programmed cycle, ensuring that each product is transferred without jitter. In addition to primary automation lines, the same replacement procedure is often applied to auxiliary handling equipment such as pallet‑stacking machines, where reliable cylinder operation supports safe load lifting and lowering. The quick turnaround of the spare parts set minimizes downtime, keeping the overall production flow uninterrupted.