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Category
1208
Self-aligning ball bearings stand out for their unique ability to automatically compensate for angular misalignment between the shaft and the housing. This misalignment can stem from shaft deflection, mounting errors, or foundation settlement. Unlike standard bearings, self-aligning types offer greater operational flexibility, reducing stress concentrations that lead to premature failure in demanding applications.
Self-Aligning Ball Bearing
| ISO | 1208 | |
| GOST | 1208 | |
| Bore diameter | d | 40 mm |
| Outside diameter | D | 80 mm |
| Width | B | 18 mm |
| Basic dynamic load rating | C | 11.52 kN |
| Basic static load rating | C0 | 3.8 kN |
| Mass bearing | 0.415 kg | |
Structure
- These bearings feature a distinctive dual-path design:
- Two Rows of Balls:Guided within a spherical raceway machined into the outer ring. This spherical surface is the key to the self-aligning capability.
- Inner Ring:Contains two deep-groove raceways to accommodate the balls.
- Cage:Typically made of pressed steel or reinforced polymer, it effectively separates and positions the balls for smooth rotation under varying alignment conditions. This construction enables the inner ring, balls, and cage to pivot relative to the spherical outer ring, enabling alignment correction.
Key Characteristics & Advantages
- Automatic Self-Alignment:Can tolerate angular misalignment typically up to 5 to 3 degrees (depending on size/design), significantly reducing stress on bearing components and adjacent structures.
- Reduced Friction & Wear:Compensating for misalignment lowers friction and uneven load distribution, leading to lower operating temperatures and longer service life.
- High-Speed Performance:Capable of handling high rotational speeds due to their ball bearing design and optimized internal geometry.
- Robustness:Engineered to withstand challenging conditions like moderate vibration and shock loads.
- Interchangeability:Often dimensionally interchangeable with standard deep groove ball bearings, simplifying upgrades where misalignment is an issue.
Typical Applications: Industries & Environments
Self-aligning ball bearings are vital wherever shaft deflection, mounting inaccuracies, or structural settling might occur:
- Material Handling:Conveyor systems, bucket elevators, screw conveyors (dealing with dust, debris, varying loads).
- Agriculture & Farming Machinery:Tractors, combines, harvesters (exposed to dirt, moisture, vibration, and shock).
- Ventilation & Air Handling:Fans, blowers, HVAC systems (operating at medium to high speeds).
- Industrial Driveshafts:Especially in setups with multiple bearing supports prone to misalignment.
- Off-Highway & Construction:Mobile equipment working on uneven terrain.
- Process Industries:Mixers, agitators.
- Textile Machinery:Sections requiring tolerance for shaft deflection.
They excel in environments that present moderate dust, moisture, vibration, and varying temperatures. Their ability to automatically adjust makes them indispensable when precise shaft alignment cannot be guaranteed or shifts during operation. Our [YUEHENG BEARING] self-aligning ball bearings are manufactured to exacting standards, ensuring superior performance, extended durability, and reduced maintenance downtime for your critical machinery.
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