The KUHN A5338990 is a genuine OEM tensioner bearing designed for various KUHN GMD series mowers. This essential component ensures proper belt tension and smooth rotational movement within the machinery, contributing to optimal performance and extended equipment life. With an inner diameter of 17mm, an outer diameter of 40mm, and a width of 12mm, this bearing is engineered to precise specifications for a perfect fit and reliable operation in demanding agricultural applications. Weighing 0.06 kg, it is a lightweight yet robust part.