Needle roller bearings are bearings with cylindrical needle rollers whose diameter is smaller than the length. They are heavy for applications with limited load space. Needle roller bearings are a compact solution for high load carrying performance. Through the needle roller and raceway shape of the well, stress peaks can be prevented and the service life of the bearing can be effectively extended. Provide needle roller bearings of different designs, different series and multiple sizes to meet various working conditions and applications.