Tech-Roll Hydraulic Motorized Pulleys THE TECH-ROLL, Hydraulic Motorized Pulley! Great for any industry! It just makes sense - put the hydraulic motor inside the drive roller. By... contaminating food products or dripping on the floor where workers can slip and injure themselves. On a typical conveyor system, traditionally mounted hydraulic motors can stick... out as much as 20 inches at the end of a roller, taking up valuable space. They require couplings or chain drives that often break and they need frequent painting. The result...