underground-Cable-Laying-Equipment-and-Tools.html target='_blank'>cable rollers work by replacing sliding friction with rolling friction. When a cable is pulled directly on the ground, it creates a high level of sliding friction, which requires immense force to overcome and can generate significant heat. A roller, on the other hand, allows the cable to roll smoothly along its surface, dramatically reducing the coefficient of friction. This reduces the pulling tension on the winch, prevents the winch from overworking, and, most importantly, protects the cable from damage caused by excessive stress and abrasion.