Three row cylindrical roller main bearing

The three row cylindrical roller main bearing achieves relative motion by rolling the rollers between the raceway of the inner and outer rings. When the shaft is subjected to radial load, the radial rollers bear the radial force and transmit the force to the inner and outer rings; When the shaft is subjected to axial load or overturning moment, the axial rollers bear the corresponding force, enabling the bearing to stably support the operation of the shaft. Under the action of the cage, the rollers can be evenly distributed on the raceway, ensuring the uniform transmission of load and reducing local stress concentration.

• Inner ring: usually made of high-strength alloy steel, it is a component that fits with the shaft. The inner hole of the inner ring is interference fit with the shaft neck to ensure synchronous rotation with the shaft during operation.
  Outer ring: Generally made of materials similar to the inner ring, it is the external support structure of the bearing. The outer ring matches with the body hole where the bearing is installed, providing external support for the entire bearing.
  Roller: Composed of three rows of cylindrical rollers, it is a key component that bears loads. The cylindrical rollers come into contact with the raceway of the inner and outer rings, transmitting loads and reducing friction through rolling.
  Retainer: Used to isolate and guide rollers, keeping them in the correct position and spacing during operation, preventing collisions and friction between rollers, and also helping to evenly distribute the load.
  Sealing device: generally installed between the inner and outer rings to prevent lubricating oil leakage, as well as to prevent external dust, moisture, and impurities from entering the interior of the bearing, which can affect the performance and service life of the bearing.

• Construction machinery: such as large cranes, excavators, loaders, etc., used to support the rotation and load-bearing of components such as lifting arms and turntables.
  Mining machinery: As a key supporting component in equipment such as mining mills, crushers, and hoists, it bears enormous loads and torques.
  Metallurgical equipment: such as blast furnaces, steelmaking converters, continuous casting machines, etc., used to support rotating components and ensure stable operation of equipment.
  Marine equipment: As an important component of slewing bearings in marine floating cranes, drilling platforms, and other equipment, it can withstand complex loads in marine environments.
  Wind power generation: used for the main shaft, yaw and pitch system of wind turbines, to withstand the gravity, axial force and torque of the wind turbine.

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