S71908 CE/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71908 CE/P4ADBA Bearing Product Overview & Core Advantages
The S71908 CE/P4ADBA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under the stringent P4A tolerance class, this bearing is engineered to handle combined radial and axial loads simultaneously. Its duplex back-to-back (DB) arrangement provides high moment stiffness and excellent operational stability. Preloaded to Extra Light (Class A), it is ideal for high-speed spindles and other precision machinery where minimal runout and high reliability are critical.
S71908 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series.
- 1908: Standard size designation (40mm bore, 62mm OD, 24mm width).
- CE: Internal design featuring a 15° contact angle and optimized internal geometry.
- P4A: Tolerance class superior to ABEC 7, specifying extremely tight dimensional and running accuracy limits.
- DB: Duplex Back-to-Back preloaded pair arrangement, enhancing system rigidity.
- A: Specific preload level (Extra Light / Class A).
S71908 CE/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide, rigid support system that effectively resists moment loads, ensuring precise shaft positioning and minimal deflection under operational stresses.
Superior Load Capacity: With a 15° contact angle and robust construction, this bearing is adept at handling combined loads, making it suitable for applications with significant radial and bidirectional axial forces.
High-Speed Performance: The lightweight, durable phenolic resin cage minimizes centrifugal forces and friction, enabling a high limiting speed of 41,000 rpm. The optimized internal design further supports stable, high-velocity operation.
Precision & Accuracy: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on the bore, outside diameter, and width, this bearing guarantees exceptional running accuracy and consistent performance.
S71908 CE/P4ADBA Bearing Typical Application Areas
The S71908 CE/P4ADBA is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps & Compressors
- Aerospace & Defense Instrumentation
