71926 ACD/PA9ATBTG400
71900 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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71926 ACD/PA9ATBTG400 Bearing Product Overview & Core Advantages
The 71926 ACD/PA9ATBTG400 is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and load capacity. This matched arrangement bearing set consists of three bearings configured in a Triplex Back-to-Back (TBT) arrangement, providing superior stability and moment load resistance. Engineered with a PA9A tolerance class and preload, it delivers high running accuracy and is optimized for high-speed operation up to 7,500 rpm. Its robust construction ensures reliable performance under significant combined radial and axial loads, making it ideal for high-precision, high-reliability machinery.
71926 ACD/PA9ATBTG400 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71926 | Basic bearing series and size designation |
| ACD | Angular Contact design with a 25° contact angle |
| PA9A | High precision tolerance class for minimal runout and vibration |
| TBT | Triplex Back-to-Back matched set arrangement |
| G400 | Specific preload level for optimal rigidity and performance |
71926 ACD/PA9ATBTG400 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The Triplex Back-to-Back (TBT) configuration of three bearings creates an extremely rigid system capable of withstanding heavy combined loads and significant moment loads. With a radial dynamic load rating of 41,850 lbf and static load rating of 68,625 lbf, this bearing set offers exceptional load-bearing performance.
Precision & High-Speed Performance: Manufactured to PA9A tolerance class standards, this bearing ensures minimal runout and high rotational accuracy. The phenolic cage and optimized internal geometry contribute to stable operation at limiting speeds of 7,500 rpm, making it suitable for high-speed applications.
Optimized Material Selection: Constructed from chrome steel for both rings and balls, the bearing provides excellent wear resistance and durability. The phenolic cage offers good dimensional stability and operates effectively within the specified temperature range of -30°C to 110°C.
71926 ACD/PA9ATBTG400 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme rigidity and accuracy
- High-Speed Machining Centers: Applications demanding superior rotational precision and stability
- Precision Gearboxes: Industrial transmission systems requiring high load capacity and minimal deflection
- Robotic Arm Joints: Automation equipment needing precise motion control and moment load resistance
- Aerospace Positioning Systems: Critical applications where reliability and precision are paramount
