Product Catalog

Rail transit bearings are key basic components in the rail transit system, supporting and guiding the wheels to roll on the track while reducing friction and wear, bearing the weight, traction, braking force, and various complex dynamic loads of the train, ensuring safe, smooth, and efficient operation of the train.

Classification

According to the type of rolling element, it can be divided into rolling bearings and sliding bearings. Rolling bearings use rolling elements (such as steel balls or rollers) to reduce friction between the inner and outer rings, and have the advantages of low noise, high load-bearing capacity, and long service life. However, they require lubricating oil to maintain lubrication and have high maintenance costs; Sliding bearings reduce friction through sliding contact, typically consisting of sliding surfaces made of metal or plastic and rollers or balls fixed to the shaft. They are easy to maintain and suitable for high-speed and heavy-duty conditions, but have wear issues that may cause noise and vibration.

According to the application location, it can be divided into axle box bearings, traction motor bearings, gearbox bearings, etc. Axle box bearings are the core components of the subway vehicle running system, with high technical content, difficult manufacturing, and extremely high requirements for safety and reliability; The traction motor bearings are used to support the shaft of the traction motor, ensuring the normal operation of the motor; The gearbox bearings bear the load during the gear transmission process and have a significant impact on transmission efficiency and stability.

Characteristic

High reliability: able to maintain stable performance under long-term, high-intensity operating conditions, ensuring the safety and punctuality of train operation.

High load-bearing capacity: It needs to withstand the huge weight of the train and various dynamic loads during operation, such as impact loads, vibration loads, etc.

High precision: Ensure the precision of the fit between the wheels and the track to reduce vibration and noise during operation, and improve the smoothness of train operation.

Good wear resistance and corrosion resistance: In harsh operating environments such as humidity, dust, oil stains, etc., it can maintain good wear resistance and corrosion resistance, extending the service life of bearings.