X-Series Hubs (Spline Bore) are heavy-duty hubs that are designed to transmit torque between shafts and components such as gears, sprockets, and pulleys. They feature a spline bore, which allows for a secure and precise fit onto a spline shaft. These hubs are commonly used in industrial applications such as conveyors, mixers, and crushers, where high torque and heavy loads are present. They are available in various sizes and configurations to fit different equipment and applications.