High-speed machining centers and precision lathes run around the clock, often in coolant mist and metal dust. Inside these machines, the power supply rollers of the PULS AC series carry the electrical current that drives the spindle motors and auxiliary axes. Positioned along the cable chains or energy chains, they maintain a continuous, low-resistance connection between the stationary power source and the moving carriage, even when the machine executes rapid tool changes or high-feed milling passes. Their smooth, low-friction surface prevents cable abrasion and signal dropout, ensuring that the control system receives uninterrupted feedback from encoders and sensors. In five-axis machining, where the head tilts and rotates, these rollers flex with the chain without binding, allowing the machine to hold tight tolerances on complex aerospace or automotive components. On adjacent production lines in the steel industry, the same rollers support the heavy-duty cable management of rolling mills, where they endure higher ambient temperatures and occasional splashes of cooling water.