Model Compatibility: Xerox 6255 series printers and compatible models Function: The roller bush serves as a bearing or support for the rollers, allowing them to move freely and smoothly. The inclusion of grease helps reduce friction, which in turn ensures the rollers operate quietly and efficiently. Material: Made from durable plastic or metal, with a layer of grease for lubrication Location: Installed within the roller assembly or paper feed mechanism Purpose: Reduces friction and wear on the rollers, ensuring smooth and efficient paper handling without jams or issues