- English
- Chinese
- French
- German
- Portuguese
- Spanish
- Russian
- Japanese
- Korean
- Arabic
- Irish
- Greek
- Turkish
- Italian
- Danish
- Romanian
- Indonesian
- Czech
- Afrikaans
- Swedish
- Polish
- Basque
- Catalan
- Esperanto
- Hindi
- Lao
- Albanian
- Amharic
- Armenian
- Azerbaijani
- Belarusian
- Bengali
- Bosnian
- Bulgarian
- Cebuano
- Chichewa
- Corsican
- Croatian
- Dutch
- Estonian
- Filipino
- Finnish
- Frisian
- Galician
- Georgian
- Gujarati
- Haitian
- Hausa
- Hawaiian
- Hebrew
- Hmong
- Hungarian
- Icelandic
- Igbo
- Javanese
- Kannada
- Kazakh
- Khmer
- Kurdish
- Kyrgyz
- Latin
- Latvian
- Lithuanian
- Luxembou..
- Macedonian
- Malagasy
- Malay
- Malayalam
- Maltese
- Maori
- Marathi
- Mongolian
- Burmese
- Nepali
- Norwegian
- Pashto
- Persian
- Punjabi
- Serbian
- Sesotho
- Sinhala
- Slovak
- Slovenian
- Somali
- Samoan
- Scots Gaelic
- Shona
- Sundanese
- Swahili
- Tajik
- Tamil
- Telugu
- Thai
- Ukrainian
- Urdu
- Uzbek
- Vietnamese
- Welsh
- Xhosa
- Yiddish
- Yoruba
- Zulu
- Kinyarwanda
- Tatar
- Oriya
- Turkmen
- Uyghur
Category
7221 AC
Angular Contact Ball Bearings (ACBBs) are precision-engineered bearing units uniquely designed to handle combined radial and axial loads, simultaneously. Unlike standard deep groove ball bearings, they incorporate contact angles (typically between 15° to 40°), enabling them to support substantial axial forces in one direction, often alongside moderate radial forces. This specific design makes them indispensable for applications demanding high rotational accuracy and stiffness under complex loading conditions.
Angular Contact Ball Bearings
| ISO | 7221 AC | |
| GOST | 46221 | |
| Bore diameter | d | 105 mm |
| Outside diameter | D | 190 mm |
| Width | B | 36 mm |
| Basic dynamic load rating | C | 89.4 kN |
| Basic static load rating | C0 | 79.2 kN |
| Reference speed | 2900 r/min | |
| Limiting speed | 2300 r/min | |
| Mass bearing | 4.29 kg | |
Structure and Design
- The core components of an Angular Contact Ball Bearing include:
- Inner and Outer Rings:Feature distinct raceways with specifically inclined shoulders. The contact angle is formed between the line connecting the points of contact between the ball and the raceways and a plane perpendicular to the bearing axis.
- Precision Balls:High-grade steel balls transmit the load between the rings.
- Cage:Securely spaces the balls to prevent contact and friction, maintain optimal grease distribution, and guide the balls during operation. Cages can be made of pressed steel, machined brass, or robust polymers (like PEEK).
- Seals/Shields (Optional):Protect against contamination and retain lubrication. Sealed variants are common in demanding environments.
Single-row ACBBs handle axial loads primarily in one direction. Duplex sets (DB: back-to-back, DF: face-to-face, DT: tandem) are created by mounting two or more single bearings together to handle higher loads and moments or bidirectional axial forces.
Key Characteristics & Performance Advantages
- High Axial Load Capacity:Excels in applications dominated by thrust loads.
- High Speed Capability:Optimized internal geometry and cage designs allow for significantly higher rotational speeds compared to tapered roller bearings under similar axial loads.
- High Stiffness & Rigidity:Provides excellent resistance to deflection and deformation, especially under preload, ensuring precise component positioning.
- Low Friction & Running Accuracy:High-precision grades offer smooth operation with minimal torque and vibration.
- Long Service Life:Achieved through high-grade materials (e.g., vacuum-degassed steel), advanced heat treatment, and precise manufacturing control.
- Mounting Flexibility:Duplexing options enable tailored solutions for specific load, moment, and rigidity requirements.
Primary Applications & Industries
Angular Contact Ball Bearings are fundamental components across diverse sectors demanding speed, precision, and combined load support:
- Machine Tool Industry:Spindles of CNC machining centers, grinders, lathes (high-speed, precision).
- Automotive:Wheel hubs (especially in duplex sets), transmissions, turbochargers, electric motors, steering systems.
- Aerospace:Jet engine accessories, helicopter transmissions, control systems.
- Power Transmission:Gearboxes, electric motors, generators, pumps, compressors.
- Industrial Automation & Robotics:High-precision robotic joints, rotary tables, linear motion systems.
- Pumps & Compressors:Impeller shafts, high-speed compressor spindles.
- Material Handling:Conveyor systems requiring precision and speed.
- Agricultural & Construction Machinery:Gearboxes, final drives where speed and axial loads coexist.
Application Environment
ACBBs perform exceptionally well in various demanding environments, including:
- High-Speed Machinery:Engineered for stability and low heat generation at elevated RPMs.
- Precision Positioning Systems:Providing rigidity and accuracy in machine tools and automation.
- Applications with Significant Axial Thrust:Handling dominant unidirectional thrust forces efficiently.
- Moderate to High Operating Temperatures:With appropriate grease or lubrication systems. Specialized variants exist for extreme environments.
- Clean-to-Moderately Contaminated Environments:Utilizing effective sealing solutions (contact seals, non-contact labyrinth seals).
Conclusion
Our Angular Contact Ball Bearings represent the pinnacle of performance for demanding applications requiring simultaneous management of high speeds, significant axial thrust, and radial loads. Engineered with precision materials, advanced designs, and rigorous quality control, they deliver unmatched rigidity, rotational accuracy, and extended service life. Trust our ACBBs to enhance the productivity, efficiency, and reliability of your critical machinery across countless industries.
Contact Us
Related Products
NF322
Cylindrical roller bearings are rolling bearings specifically engineered to accommodate high radial loads. Their key rolling elements are cylindrical rollers that make linear contact with the raceways. This design makes them exceptionally effective at handling pure radial forces, serving as critical components in a vast array of industrial applications. Compared…
2205
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…
6036 ZZ
A Deep Groove Ball Bearing is one of the most widely used types of rolling bearings. It consists of an inner ring, outer ring, steel balls, and a cage (or sealing components). The deep groove raceways on the inner and outer rings allow it to withstand radial loads and limited…
K50X58X25
Needle roller bearings utilize cylindrical rollers with a length-to-diameter ratio exceeding 4:1. This “needle-like” geometry enables exceptional radial load capacity within extremely compact cross-sections, providing superior space efficiency compared to ball bearings of equivalent dimensions.
51252
Thrust ball bearings are rolling bearings engineered to handle axial loads exclusively. Their design features a shaft washer (tight ring), housing washer (loose ring), and a ball-cage assembly with grooved raceways, enabling efficient axial force transmission with minimal friction. Not suitable for radial loads.
K22X28X17
Needle roller bearings utilize cylindrical rollers with a length-to-diameter ratio exceeding 4:1. This “needle-like” geometry enables exceptional radial load capacity within extremely compact cross-sections, providing superior space efficiency compared to ball bearings of equivalent dimensions.
-
-
-
grashbearings@outlook.com
-
+86-13863568175