Transmission Bearings

FLT transmission bearings are involved in multiple application fields such as manual transmission, automatic transmission, hybrid vehicle transmission and pure electric reducer. The internal optimized structure of this type of bearing meets different application conditions, including the selection of high-quality materials, special heat treatment processes for the inner and outer rings of the bearing, and low friction torque structural sealing rings for deep groove ball bearings, etc. At the same time, by applying the manufacturing technology of transmission bearings, high precision, low noise and high cleanliness of the bearings are achieved, meeting the performance requirements of high temperature, high speed, rapid speed change and low torque of the bearings.

Optimal design: Taking the installation position, load spectrum, operating speed, lubricating oil, and contaminated environment of the transmission bearing as the input, the ROMAX software is used to conduct dynamic verification of the bearing life and stress calculation analysis. Based on the analysis results, the internal structure of the bearing is optimized to achieve synchronous forward design and development with the transmission mainframe customer.

High-quality materials: The main material of the transmission bearings is high-quality high-carbon chromium bearing steel, which features high hardness, high wear resistance, fatigue resistance and corrosion resistance.

Special heat treatment for long life: In the high speed operation of the bearing, gear meshing may produce foreign substances, which enter between the rolling elements of the bearing and the raceways of the inner ring, thereby easily causing damage to the working surface of the bearing. Through surface strengthening heat treatment of bearing components, not only is a certain depth of carburized layer, a specific amount of residual austenite content, and compressive stress achieved on the surface, but it also improves the size and distribution of carbide particles in domestic bearing steel to some extent. This effectively enhances the wear resistance and rolling contact fatigue life of bearings in contaminated environments.

Manufacturing technology: Advanced forging, heat treatment, grinding and assembly processes are adopted, automated and intelligent processing equipment are applied, supplemented by workshop production management systems such as MES and SPC, to ensure dimensional accuracy and rotational accuracy of bearings while achieving traceability of product batches and quality.