The NKE RNA4901-2RSR is a high-quality radial needle roller bearing designed without an inner ring, making it suitable for applications where the shaft surface can be hardened and ground to serve as a raceway. This bearing features two rubber seals (2RSR) to protect against contaminants and retain lubricant, ensuring extended service life and reliable performance in various industrial and agricultural machinery. It has a 12mm bore diameter, 24mm outer diameter, and 13mm width.