Shanghai Tongzai Bearing Co., Ltd

Address: No. 3329, Jinqian Highway, Fengxian District, Shanghai

Tel: ＋86 21-31261582 ＋86 15000029966

Email: 171087307@qq.com

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Introduction to high-temperature short cylindrical roller bearings:

High-temperature short cylindrical roller bearings are bearings that can operate in high-temperature environments and are mainly used to withstand radial loads and some axial loads. These bearings are usually made of high-temperature resistant materials and can operate stably at high temperatures of 500-800°C. They have characteristics such as oxidation resistance, corrosion resistance, high hardness, wear resistance, strong impact resistance, and excellent anti-seizure ability.

The main characteristics of high-temperature short cylindrical roller bearings include:

Excellent High-temperature Resistance: High-temperature short-cylindrical roller bearings can maintain good lubrication performance and load-bearing capacity in high-temperature environments. Some specially designed high-temperature bearings can withstand high temperatures of thousands of degrees Celsius. This is mainly due to the use of heat-resistant alloys such as tungsten and rhenium to manufacture rolling elements and cages. These alloys can still maintain good mechanical properties at high temperatures.

Low Friction Coefficient: Under high-temperature working conditions, the viscosity of the lubricating oil will decrease due to the increase in temperature, and its fluidity will increase, making it easy to slide off high-speed rotating components, resulting in lubrication failure. Therefore, high-temperature bearings need to have a low friction coefficient to ensure good lubrication during high-speed operation. By optimizing the material structure and adopting advanced surface treatment technologies, the friction coefficient can be further reduced, reducing energy losses and heat generated by friction.

High Precision and High Rigidity: High - temperature environments can cause thermal expansion of materials and a decrease in mechanical properties. Therefore, high-temperature bearings need to have high precision and rigidity. During the design stage, through strict mechanical calculations and simulation analysis, the dimensions and shapes of each component of the bearing are accurately determined, and parameters such as the elastic modulus of the material are reasonably selected to improve the overall rigidity of the bearing. During the manufacturing process, advanced processing techniques and precision processing equipment are used to ensure the machining accuracy of bearing parts.

High Strength and High Stiffness: In high-temperature environments, bearings need to withstand various complex loads and stresses, so they need to have high strength and stiffness. By selecting high-strength and high-hardness steel as the basic material for the bearing, such as special chromium-molybdenum alloy steel, which can maintain a high yield strength and tensile strength at high temperatures, effectively resisting deformation and fracture caused by external loads.

Structural Features: High-temperature short-cylindrical roller bearings usually adopt an integral cage, which has high reliability. The design of the rollers and raceways is in line contact or approximate line contact, which gives it excellent radial load - bearing capacity and is very suitable for applications that bear heavy loads and impact loads. In addition, the friction coefficient of this type of bearing is low, making it suitable for high-speed rotation.

The main application scenarios of high-temperature short-cylindrical roller bearings include the following:

Metallurgical Industry: In the process of steel production and non-ferrous metal smelting, high-temperature short-cylindrical roller bearings are widely used in equipment such as high-temperature furnace charge conveyors, high - temperature steam turbines, high-temperature furnaces, high-temperature heat-treatment equipment, and high-temperature conveyors to ensure stable operation in high-temperature environments.

Petrochemical Industry: In petrochemical production, high-temperature short-cylindrical roller bearings are used in equipment such as steam turbines, high-temperature pumps, and high-temperature compressors. These equipment need to operate in high-temperature, high-pressure, and corrosive environments.

Aerospace Field: High-temperature short-cylindrical roller bearings are widely used in key equipment such as high-temperature turbines and high-temperature aero-engines, withstanding high-temperature and high-speed operating environments.

Power Industry: In power equipment, such as generators and gas turbines, high-temperature short-cylindrical roller bearings can ensure the stable operation of the equipment in high-temperature environments.

Industrial Manufacturing: In the industrial manufacturing field, in equipment such as rolling mills and vibrating screens, high-temperature short-cylindrical roller bearings can withstand high - temperature and heavy-load working conditions.

Rail Transit: In transportation vehicles such as locomotives, vehicles, and internal combustion engines, high - temperature short-cylindrical roller bearings can provide stable support and durability.

Shipbuilding: In the mechanical equipment of ships, such as reduction gearboxes and lifting and transportation machinery, high-temperature short-cylindrical roller bearings can ensure reliable operation in complex marine environments.

Wind Power Industry: In the transmission system of wind power equipment, high-temperature short-cylindrical roller bearings can adapt to high-temperature and variable-load working environments, ensuring the stable operation of the equipment.