• Shandong JNLL Bearing Co., Ltd.
• 2023-11-09

Product Introduction

Needle roller bearings are roller bearings with cylindrical rollers. Compared to their diameter, the rollers are both thin and long. This type of roller is called a needle roller, and although it has a small cross-section, the bearing still has a high load bearing capacity. Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact. Its inner diameter size and load capacity are the same as other types of bearings, and its outer diameter is small, making it particularly suitable for support structures with limited radial installation dimensions.
According to different usage scenarios, bearings or needle and cage components without inner rings can be selected. At this time, the journal surface and shell hole surface that match the bearing directly serve as the inner and outer rolling surfaces of the bearing. To ensure the same load capacity and operating performance as bearings with rings, the hardness, machining accuracy, and surface quality of the shaft or shell hole raceway surface should be similar to the raceway of the bearing ring. This type of bearing can only withstand radial loads.
Needle roller bearings have a large load-bearing capacity and are suitable for supporting structures with limited installation dimensions. The surface of the journal is hardened as the rolling surface, and the bearing is pressed into the seat hole without the need for axial positioning.