Needle roller bearings are used in metallurgical equipment such as rolling mills to support rolling mills. With their small cross-sectional size and high load-bearing capacity, they can withstand enormous rolling forces in limited spaces, ensuring stable operation of rolling mills and improving rolling accuracy. On metallurgical cranes, needle roller bearings can be installed on wheel sets and other parts to adapt to heavy loads and frequent starting and braking conditions, ensuring reliable operation of the crane. In some metallurgical auxiliary equipment such as conveying devices, needle roller bearings can assist in the smooth transmission of components such as chains and belts, reduce friction and wear, and improve the overall work efficiency and service life of the equipment.