The NTN 7009UADG/GNP42 is a high-precision single row angular contact ball bearing designed for demanding applications such as machine tool spindles. Featuring a 45mm bore diameter, 68mm outer diameter, and 12mm width, this bearing is manufactured to P4 precision (GNP42). The 'UADG' designation indicates a 25-degree contact angle and universal pairing capability, allowing for flexible mounting in duplex arrangements (back-to-back, face-to-face, or tandem) to accommodate axial and radial loads. Its robust construction ensures reliable performance and high rotational accuracy.