S71909 CDGA/P4AGWP
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
S71909 CDGA/P4AGWP Bearing Product Overview & Core Advantages
The S71909 CDGA/P4A GWP is a super-precision angular contact ball bearing designed for applications demanding the highest levels of accuracy, rigidity, and speed. As a single-row bearing with a 15° contact angle, it is optimized to handle combined loads, primarily thrust loads with significant radial load capacity. Its P4A tolerance class and extra light preload (Class A) ensure exceptional running accuracy and minimal heat generation, making it ideal for high-speed spindles and other precision machinery where stability is critical.
S71909 CDGA/P4AGWP Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71909 | Basic bearing designation. S-series denotes a super-precision bearing. |
| C | 15° nominal contact angle. |
| DG | Universal Matchable (SU). The bearing is manufactured to be universally matchable with other bearings of the same type in any combination. |
| A | Extra light preload (Class A). |
| P4A | High-precision tolerance class, superior to ABEC 7/ISO P4. |
| GWP | Grease lubrication. The bearing is factory pre-lubricated with grease. |
S71909 CDGA/P4AGWP Bearing Structural Features & Performance Benefits
High Precision and Rigidity: Manufactured to a P4A tolerance class with extremely tight dimensional tolerances on the bore diameter (45 mm), outside diameter (68 mm), and width (12 mm), this bearing provides exceptional rotational accuracy and system stiffness. The extra light preload eliminates internal clearance, enhancing rigidity while minimizing friction and heat build-up at high speeds.
Superior High-Speed Performance: The combination of the phenolic resin cage, which is lightweight and possesses excellent sliding properties, and the optimized internal geometry allows for a high limiting speed of 46,000 rpm. This makes it a top choice for high-speed applications.
Optimized Load Capacity: With a 15° contact angle, the bearing is engineered to support significant combined loads. It offers a dynamic load rating of 2925 lbf and a static load rating of 2138 lbf, providing reliable performance under demanding conditions.
Universal Matching Capability: The Universal Matchable (SU) designation means these bearings can be mounted in any combination (back-to-back, face-to-face, or tandem) without pre-selection, simplifying installation and inventory management for matched bearing sets.
S71909 CDGA/P4AGWP Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and high-accuracy rotary tables.
- High-Frequency Motors and Spindles: Where minimal runout and thermal stability are paramount.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace & Defense Systems: Gyroscopes and navigation systems.
