Needle roller bearings can be used in automotive engines for piston pins, balance shafts, and other parts. With their small size and large load-bearing capacity, they adapt to compact engine spaces, withstand high loads, and operate at high speeds. In the transmission, needle roller bearings can support the gear shaft, ensuring precise meshing between gears, reducing friction, improving transmission efficiency, and reducing energy loss. In the steering system of automobiles, needle roller bearings can assist in the flexible rotation of components such as steering knuckles, enhancing the precision and handling of steering. In the suspension system, it is used to connect components, buffer vibrations, improve ride comfort and vehicle stability, and ensure reliable operation of the car.