S71910 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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S71910 CD/P4ADGA Bearing Product Overview & Core Advantages
The S71910 CD/P4ADGA is a super-precision angular contact ball bearing designed for the most demanding applications. Engineered to a P4A tolerance class, it delivers exceptional running accuracy and rotational stability. Its core strength lies in its ability to handle combined loads (radial and axial) simultaneously, making it an ideal choice for high-speed spindles and precision machinery. The universal matchable (SU) design allows for flexible mounting arrangements in pairs to support bidirectional axial loads. With its extra light preload and optimized internal geometry, this bearing achieves superior high-speed performance and high rigidity in a compact design.
S71910 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71910 | Super-precision angular contact ball bearing series with 50mm bore. |
| CD | Contact angle of 15° and specific internal design for high-speed operation. |
| P4A | High precision tolerance class exceeding ABEC 7, with enhanced running accuracy requirements. |
| DGA | Indicates the bearing is universal matchable (SU) and comes with a phenolic (Phenolic) cage and grease lubrication. |
S71910 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides superior high rigidity and stability, enabling it to support significant combined loads from multiple directions. The 15° contact angle is optimized for high-speed applications requiring high axial load capacity.
Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 34,000 rpm. The optimized internal geometry and extra light preload further enhance high-speed capability and minimize heat generation.
Precision & Longevity: Manufactured to a P4A tolerance class with tight dimensional tolerances on the bore diameter, outside diameter, and width, this bearing ensures exceptional running accuracy. The sealed construction retains the factory-applied grease lubrication, protecting against contamination and providing long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S71910 CD/P4ADGA Bearing Typical Application Areas
This super-precision bearing is ideally suited for high-performance machinery requiring extreme accuracy and speed, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring machines and optical scanners.
- High-Frequency Motors & Spindles: Where low vibration and high rotational accuracy are critical.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
