S71906 CD/P4ATBTB
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71906 CD/P4ATBTB Bearing Product Overview & Core Advantages
The S71906 CD/P4ATBTB is a super-precision angular contact ball bearing designed for the most demanding applications. Its triplex back-to-back (TBT) matched arrangement provides exceptional system rigidity and stability, enabling it to handle complex combined loads (radial and axial) simultaneously. Manufactured to an ultra-precise P4A tolerance class, this bearing is engineered for high-speed operation, accuracy, and long-term reliability in critical machinery.
S71906 CD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | High-Grade Stainless Steel (Ring Material) |
| 1906 | Standard dimension series (19) and bore diameter (06 = 30 mm) |
| CD | 15° contact angle, optimized for high-speed performance |
| P4A | Ultra-precision tolerance class, superior to ABEC 7 |
| TBT | Triplex Back-to-Back preloaded set |
S71906 CD/P4ATBTB Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Load Capacity: The triplex back-to-back arrangement of three bearings creates an extremely stiff bearing system, capable of withstanding heavy combined loads and moments. This configuration is essential for applications requiring minimal deflection under load.
High-Speed Capability: Featuring a lightweight phenolic resin cage and a 15° contact angle, this bearing is optimized for high-speed operation up to 100,500 rpm. The design minimizes centrifugal forces and friction, reducing heat generation.
Precision and Longevity: The P4A tolerance class ensures minimal runout and vibration, which is critical for precision machining and smooth operation. The bearings are pre-greased and sealed for protection against contamination, offering a long service life in their specified temperature range.
S71906 CD/P4ATBTB Bearing Typical Application Areas
The S71906 CD/P4ATBTB is ideally suited for high-precision, high-speed machinery where rigidity and accuracy are paramount. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotic Drives
- High-Frequency Motor Spindles
- Aerospace Gyroscopes and Instrumentation
- Medical and Dental Equipment Spindles
