The working principle of double row tapered roller bearings
Double row tapered roller bearings achieve force transmission and dispersion through the combination design of tapered raceways on the inner and outer rings and two rows of tapered rollers. When the bearing is subjected to radial load, the contact line between the roller and the raceway is distributed in a straight line, and the pressure is evenly dispersed. At the same time, axial force is generated due to the conical structure. Its double row roller layout can withstand axial loads in two directions simultaneously, and adjust the clearance or pre interference through a spacer ring to ensure that the bearing limits bidirectional axial displacement within the axial clearance range. In addition, the contact angle between the roller and the raceway (usually 10 ° -19 °, and large cone angle models can reach 25 ° -29 °) determines the axial load capacity. The larger the angle, the stronger the axial load capacity.
Advantages of double row tapered roller bearings
High load-bearing capacity
It can simultaneously withstand radial and bidirectional axial composite loads, and its load-bearing capacity is significantly better than that of single row bearings.
. Its design optimizes the contact line structure between the roller and the raceway, reduces stress concentration, and improves overall load-bearing performance.Suitable for heavy machinery scenarios such as rolling mills, mining equipment, etc., capable of withstanding complex force systems under high load conditions.
.High rigidity
The double row structure enhances the bearing's resistance to deformation, maintaining low elastic deformation under load, ensuring the accuracy of mechanical system operation.
. The rigidity advantage makes it an ideal choice for stability demanding scenarios such as gearboxes and lifting equipment.Bi directional axial fixation capability
Through a double row roller layout, bearings can limit the axial displacement of the shaft or housing in both directions, avoiding equipment displacement or vibration caused by axial forces.
. This feature simplifies mechanical design and reduces the need for additional axial positioning devices.Modularity and Interchangeability
Adopting a separate design, the inner and outer rings can be independently installed, meeting the ISO standard interchangeability requirements, and facilitating maintenance and replacement.
. Users can choose bearings with different contact angles or clearance levels according to their working conditions, and flexibly adapt to diverse application scenarios.Adapt to complex working conditions
The contact angle can be customized, and the small cone angle model (10 ° -19 °) is suitable for scenarios dominated by radial loads, while the large cone angle model (25 ° -29 °) can withstand higher axial loads.
. The modular structure supports independent installation of the inner and outer rings, making it easy to apply in devices with limited space or requiring quick disassembly and assembly.