71926 ACD/P4ATBTA
71900 Series Super Precision Angular Contact Ball Bearings
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71926 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 71926 ACD/P4ATBTA is a precision angular contact ball bearing designed for the most demanding applications. Operating as part of a Triplex Back-to-Back (TBT) matched set, this bearing delivers exceptional system rigidity and stability. Its primary advantage lies in its ability to handle combined loads—significant radial and thrust loads simultaneously—making it ideal for high-precision, high-speed machinery. Manufactured to P4A tolerance class and featuring an Extra Light preload (Class A), it ensures smooth operation, minimal runout, and superior positional accuracy.
71926 ACD/P4ATBTA 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 for optimal thrust capacity. |
| P4A | Indicates high precision tolerance class (superior to ABEC 7), ensuring minimal dimensional variation. |
| TBT | Specifies the bearing is one of three in a Triplex Back-to-Back matched arrangement for maximum moment stiffness. |
| A | Denotes Extra Light preload (Class A), reducing vibration and heat generation at high speeds. |
71926 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The Triplex Back-to-Back (TBT) configuration creates an extremely rigid bearing system capable of withstanding heavy combined loads and tilting moments. This is critical for applications requiring high positional accuracy.
Optimized High-Speed Performance: The phenolic cage is lightweight and robust, contributing to lower centrifugal forces and stable operation at the limiting speed of 7,500 rpm. The 25° contact angle is engineered for an excellent balance between radial and axial load capacity at high rotational speeds.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore, outside diameter, and width, this bearing guarantees consistent performance and ease of installation in precision assemblies.
Superior Material Construction: Components made from chrome steel for both rings and balls provide high fatigue life and durability under demanding operating conditions.
71926 ACD/P4ATBTA Bearing Typical Application Areas
The 71926 ACD/P4ATBTA is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in robotics and aerospace actuation systems.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical Equipment: Such as high-speed dental handpieces and imaging device rotors.
