The Koyo 62042RSNR is a genuine deep groove ball bearing designed for various industrial and agricultural applications. It features a 20mm inner diameter, a 47mm outer diameter, and a 14mm width. The '2RS' designation indicates that the bearing is equipped with two rubber seals, providing excellent protection against dust and moisture, while the 'NR' signifies the presence of a snap ring groove on the outer ring for secure axial positioning. This sealed design helps to retain lubricant and extend the bearing's service life in demanding environments.