SKL has been providing products and services to the world's leading rail vehicle manufacturers, rail vehicle operators, gear box and parts manufacturers. SKL has many years of experience and extensive expertise in bearing products and system solutions for train traction motors, gear boxes and other aspects, and is a reliable partner for railway transport enterprises,
SKL can provide not only standard parts such as rolling bearings, but also integrated and cost optimized component optimization solutions. From the initial sketch to the testing stage, to the mass production, and finally to the scrap management, SKL will accompany customers throughout the process.
Railway train bearing
Train traction motor bearing
The configuration of traction motor bearings consists of locating and non-positioning bearings, mainly using deep groove ball bearings or cylindrical roller bearings. SKL provides insulated bearings and hybrid ceramic bearings with up to 3000V DC voltage. Prevent the rolling bearing from causing potential equalization, and ensure that there is potential difference inside the motor and between the rotor and the stator;
SKL insulated bearings do not need additional insulation treatment on the bearing position. The main dimensions and tolerances are consistent with the standard bearings, which can effectively prevent current damage to the bearings and provide reliable and durable operating conditions;
SKL hybrid ceramic bearing is suitable for extremely high speed. The bearing material itself has high resistance and is not easy to conduct electricity. Compared with the standard bearing, it has better emergency motion characteristics and longer service life.
Train gearbox bearing
The railway industry has continuously improved its requirements for durability, lightweight design and energy-saving mobility of gear boxes. SKL tapered roller bearings, four-point contact ball bearings and cylindrical roller bearings are commonly used in railway vehicle gear boxes; Adopt narrow adjacent dimension tolerance, enhanced internal structure and outer ring positioning groove design to provide customers with reliable gearbox bearing products;
SKL designs different ways to support the gear shaft according to the type and function of the gear shaft, and configures positioning or non-positioning bearings for the drive or input shaft; The locating bearing consists of a four-point contact ball bearing and a cylindrical roller bearing. Non-positioning bearings are mainly cylindrical roller bearings, and the commonly used series are 2, 22 and 23.
If the intermediate shaft of the multi-stage gearbox is supported by two NJ cylindrical roller bearings as non-positioning bearings, series 2, 3 and very few series 4 are selected. The adjustable bearing with tapered roller bearing will also be used in special space;
The positioning bearing of output shaft adopts deep groove ball bearing or NUP cylindrical roller bearing; Non-positioning bearings are NU cylindrical roller bearings of series 18, 19, 28 and 29.
SKL bearings meet the highest quality requirements of customers. In addition to professional NDT for all parts, SKL also needs to carry out ultrasonic and magnetic particle testing for bearing rings, eddy current testing for rolling bodies, and several high-precision dimensional, functional and material testing for brass or polyamide rolling bearing cages. Provide partners with high standard bearing products and professional technical solutions.