Four-Point Contact Angular Contact Ball Bearings (General)
Four-point contact angular contact ball bearings are designed to handle both radial and axial loads in all directions. These bearings are commonly used in crane systems, wind turbines, and heavy machinery.
Handles Bi-Directional Axial & Radial Loads
The unique feature of Four-Point Contact Angular Contact Ball Bearings is their ability to accommodate significant axial loads in both directions, plus radial loads, using only a single row of balls. This is achieved through specially shaped raceways (Gothic arch).
If your application has complex, reversing axial loads combined with radial forces, this 4 point contact bearing offers a highly efficient solution within one component.
Significant Axial Space Saving
Compared to using two single row angular contact bearings arranged back-to-back or face-to-face, a Four-Point Contact Angular Contact Ball Bearing takes up considerably less axial space. This compactness is a major advantage in designs where length along the shaft is restricted, such as in gearboxes or slewing rings.
Choose this bearing type when minimizing axial footprint is critical for your product.
Simplified Application Design
By handling complex load combinations within one unit, the 4 point contact bearing can simplify the overall machine design. It potentially reduces the number of components needed, simplifies shaft and housing machining, and can streamline the assembly process.
This simplification can lead to cost savings in both manufacturing and assembly, making it an attractive option for efficient engineering solutions requiring robust load support.
FREQUENTLY ASKED QUESTIONS
What is the primary function of the Gothic arch raceway?
The Gothic arch shape creates two contact points on each ring under axial load, effectively allowing a single row of balls to handle thrust loads in either direction. This is the core mechanism behind the 4 point contact bearing's bidirectional capability.
Is the radial load capacity limited compared to axial in four-point contact angular contact ball bearings?
Yes, generally. While they handle radial loads, the design primarily optimizes for high axial load capacity. For applications with predominantly radial loads, other types of bearings like deep groove ball bearings might be more suitable.
What's crucial during installation if the bearing has a split ring?
The two halves of the split ring must be kept together, correctly oriented, and securely clamped axially on the shaft (usually by a locknut). Improper clamping can lead to incorrect clearance and premature failure. It doesn't typically allow for direct bearing installation onto shouldered shafts without accessing the ring halves.
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