23238 Spherical Roller Bearing , Double Row Spherical Bearing Self Aligning

Structural Design and Core Advantages

Accurate Dimensional Parameters

• Inner diameter: 190mm, which is compatible with the main shaft diameter of large equipment, ensuring a tight fit with the shaft diameter to avoid slipping or eccentricity during operation.
• Outer diameter: 340mm, the large outer diameter provides sufficient structural strength for the bearing, matching the bearing housing specifications of heavy-duty equipment.
• Width: 120mm, the widened design further enhances the axial stability of the bearing, enabling it to better withstand bidirectional axial loads.
• Chamfer size: Generally 3mm, facilitating guidance during installation and reducing collision damage with equipment components.

Key Performance Indicators

• Rated dynamic load: There are slight differences among products of different brands. The rated dynamic load of mainstream brands is generally between 1400kN and 1600kN (for example, a well-known brand can reach 1,580,000N), which can meet the dynamic load requirements of equipment during long-term high-speed operation.
• Rated static load: Usually in the range of 2300kN to 2500kN (approximately 2,400,000N), it can stably support static loads when the equipment is shut down or started at low speed, preventing permanent deformation of the bearing.
• Limiting speed: About 900rpm when lubricated with grease, and can be increased to 1200rpm when lubricated with oil. The specific value is affected by the lubrication method, working temperature, and installation accuracy, making it suitable for medium and low-speed heavy-duty working conditions.

Materials and Processes

• Bearing rings and rollers: High-purity 52100 chromium bearing steel is used. After quenching and tempering, the hardness can reach HRC60~65, which has extremely high wear resistance and contact fatigue strength, ensuring a long service life under heavy loads.
• Cage: Common materials are brass or stamped steel. Brass cages are suitable for higher speeds and corrosive environments, while steel cages perform more stably under impact loads, and can be flexibly selected according to working conditions.
• Surface treatment: Some high-end products undergo super-finishing and phosphating treatment on the raceway to reduce the friction coefficient, improve rust resistance, and adapt to humid or dusty industrial environments.

Application Fields

• Metallurgical equipment: In equipment such as work rolls of rolling mills and mold oscillators of continuous casters, it can withstand alternating loads in high-temperature environments, ensuring the continuity of steel rolling.
• Mining machinery: In the main shaft systems of crushers and ball mills, it can cope with severe impacts and dust pollution during ore crushing, reducing the number of equipment shutdowns for maintenance.
• Heavy machine tools: Used for spindle support of large vertical lathes and boring machines, providing stable rotation accuracy when processing heavy workpieces to ensure processing quality.
• Wind power generation: Adapted to the yaw and pitch systems of megawatt-level wind turbines, it compensates for tower deformation through self-aligning function under strong wind loads, ensuring efficient operation of wind turbines.