This unit carries a chain sprocket mounted on an integrated bearing support, allowing it to run as a tensioning or guiding element within a roller chain drive. The bore diameter is 16.2 mm, outside diameter 40.0 mm, and net mass 0.2 kg. The sprocket body is made from steel or sintered iron. The compact design combines the rolling bearing and sprocket into a single mounting unit, simplifying installation where a chain idler or tensioner point is required. Since the bearing and sprocket geometry are matched by the manufacturer, running accuracy and load distribution across the chain contact are maintained without additional alignment work at assembly.