Single row four point angular contact ball bearing is a specially designed rolling bearing, whose core function is to simultaneously withstand radial load and bidirectional axial load through a unique structure, and has high stiffness, high precision, and self-aligning ability. The following is a detailed explanation of its specific functions and characteristics:
1. Bearing composite loads
Radial loads: Similar to ordinary ball bearings, it can withstand forces perpendicular to the axis (such as equipment weight and external pressure).
Bi directional axial load: Through a four point contact design (with inner and outer raceway intersecting in a "V" shape), it can simultaneously withstand forces in both axial directions (such as forward and reverse rotation, thrust during reciprocating motion). Typical application scenarios: Machine tool spindles, gearboxes, pumps, compressors, and other rotating equipment that require simultaneous radial and axial forces.
2. High stiffness and high precision
Structural optimization: The four point contact design increases the contact area between the roller and the raceway, makes the load distribution more uniform, reduces elastic deformation, and thus improves the stiffness of the bearing.
.Accuracy guarantee: Suitable for high-precision rotating systems (such as CNC machine tools, precision instruments), ensuring smooth motion and accurate positioning.
.3. Self centering ability (some models)
Self centering design: The inner or outer rings of some single row four point angular contact ball bearings adopt spherical design, allowing for a certain degree of angular deviation (usually ≤ 2 °) between the shaft and the bearing seat, compensating for installation errors or shaft deformation induced tilting.
.Application advantages: In situations where the accuracy of shaft alignment is not high or is easily affected by thermal expansion (such as large motors and fans), vibration and noise can be reduced, and the service life can be extended.
.4. High speed operation capability
Low friction design: The contact angle between the roller and the raceway is optimized, reducing rolling friction and suitable for high-speed rotation (such as machine tool spindle speed reaching tens of thousands of revolutions per minute).
.Heat dissipation performance: Compact structure, low heat generation, and can further dissipate heat through lubrication, suitable for continuous high-speed operation scenarios.
.5. Space saving and simplified design
Single row structure: Compared to double row or thrust bearing combinations, single row four point angular contact ball bearings have a smaller volume and can save axial installation space.
.Multi functional integration: One bearing can replace the combination of radial bearings and thrust bearings, simplifying mechanical design and reducing manufacturing costs.
.6. Impact resistance and vibration resistance
More rollers: more contact points, dispersed impact loads, and improved vibration resistance.
.Application scenario: Suitable for equipment with frequent vibrations (such as vibrating screens, crushers), reducing the risk of bearing damage.
.Typical application fields
Machine tool spindle: bears cutting force (radial) and axial feed force, and needs high-precision rotation. Gearbox: supports the gear shaft and bears the radial and axial forces generated by gear meshing.
Pumps and compressors: transmit rotational power and withstand composite loads generated by liquid or gas pressure.
. Wind turbine: supports the main shaft and adapts to axial force fluctuations caused by changes in wind direction.Robot joints: achieve high-precision and high stiffness rotational motion while bearing the force generated by the load.
.