Product introduction

The stamped outer ring needle roller bearing is a kind of bearing with unique structure and performance characteristics.

Structural features

Outer ring：The outer ring is made of thin steel plate by stamping, which has the advantages of light weight, low cost and high production efficiency. The shape of the outer ring is usually cylindrical, and its outer diameter surface has been precisely machined to ensure a good fit with the installation part.

Needle roller：The needle roller is the rolling body of the bearing, made of high-quality steel, with high hardness and wear resistance. The shape of the needle roller is a slender cylindrical shape, and the ratio of its length to diameter is relatively large, which allows the bearing to accommodate more needles in a limited space, thus improving the bearing's bearing capacity.

Cage：The function of the cage is to evenly separate the needle rollers to prevent collision and friction between the needles. Cages are usually made of plastic or metal materials and have good strength and wear resistance.

Working principle

Carrying capacity：The punching outer ring needle roller bearing mainly bears radial loads, and its bearing capacity depends on the number, size and arrangement of the needle rollers. Due to the linear contact between the needle roller and the raceway, the contact area is small, so under the same load, the contact stress is large. However, due to the large number of needle rollers, the load can be shared, so that the bearing as a whole can bear a large radial load.

Rotation accuracy：During the operation of the bearing, the needle roller rolls along the raceways of the outer and inner rings under the guidance of the cage. Due to the careful design of the shape and arrangement of the needle rollers, the bearing has a high rotation accuracy and a low friction coefficient. At the same time, the manufacturing accuracy of the stamping outer ring also has an important impact on the rotation accuracy of the bearing.

Installation method：The installation method of the stamped outer ring needle roller bearing is relatively simple, and the press-in installation is usually used. Due to the elasticity of the outer ring, slight deformation can occur during the installation process, thus ensuring a close fit with the installation part. In addition, the bearing can also be sealed in different forms as needed to prevent dust, moisture and other impurities from entering the bearing interior and affecting the service life of the bearing.

Application field

Automotive industry：It is widely used in the engine, transmission, steering system and other parts of the automobile. For example, in the crankshaft bearing of the automobile engine, the stamped outer ring needle roller bearing can withstand high-speed rotation and large radial load to ensure the normal operation of the engine. In the automobile transmission, the stamped outer ring needle roller bearing is used to support the gear shaft and synchronizer and other components to improve the shift performance and reliability of the transmission.

Industrial machinery：In various industrial machinery and equipment, such as machine tools, motors, fans, pumps, etc., stamped outer ring needle roller bearings are often used in parts that require high load-bearing capacity and compact space. For example, in the spindle system of machine tools, stamped outer ring needle roller bearings can replace traditional sliding bearings and improve the speed and accuracy of the spindle. In motors, stamped outer ring needle roller bearings are used to support the rotor shaft, reducing friction loss and noise of the motor.

Household appliances：In household appliances, such as washing machines, air conditioners, refrigerators, etc., stamping outer ring needle roller bearings also have certain applications. For example, in the roller bearings of washing machines, stamping outer ring needle roller bearings can withstand the radial load generated by the washing machine during high-speed rotation and frequent start-stop processes, ensuring the normal operation of the washing machine. In compressors of air conditioners and refrigerators, stamping outer ring needle roller bearings are used to support the crankshaft of the compressor, improving the efficiency and reliability of the compressor.