The 61901 ZZ PRX/Q TTN Radial Ball Bearing features metal shields for enhanced protection against dust and debris, making it suitable for high-speed applications. With a bore size of 12 mm and an outer diameter of 28 mm, this bearing is perfect for use in electric motors and machinery. Its high-quality steel construction ensures durability and long service life. The ZZ design provides low friction and smooth operation, meeting ISO standards for reliability. The 61901 ZZ PRX/Q TTN is an excellent choice for those seeking efficiency in their mechanical systems.