S7211 CDGB/P4A
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
S7211 CDGB/P4A Bearing Product Overview & Core Advantages
The S7211 CDGB/P4A is a 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 simultaneously handle combined radial and axial loads. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, making it an ideal, compact solution for high-speed spindles and other high-reliability machinery where precision is paramount.
S7211 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7211 | Series & Size Designation | Denotes a specific series with a 55mm bore and 100mm OD. |
| CD | Contact Angle & High Rigidity | Specifies a 15° contact angle and optimized internal design for high rigidity. |
| GB | Light Preload (Class B) | Indicates the bearing is supplied with a light preload to minimize deflection and ensure stable operation under high speeds. |
| P4A | Tolerance Class | Signifies super-precision dimensional and running accuracy, superior to ABEC 7. |
S7211 CDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The optimized internal geometry, including a 15° contact angle and high-grade chrome steel components, provides superior stiffness. This enables the bearing to effectively support combined loads, making it exceptionally stable in demanding applications.
High-Speed Performance: The lightweight, durable phenolic cage is instrumental in achieving a high limiting speed of 39,000 rpm. This cage material reduces centrifugal forces and friction, which is critical for high-speed bearing operation.
Pre-optimized for Precision: The universal matchable (SU) designation means these bearings are manufactured to be interchangeable within a set, allowing for simplified assembly and consistent performance in multi-bearing arrangements.
Sealed and Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate installation, offering long-term, maintenance-free operation within its specified temperature range.
S7211 CDGB/P4A Bearing Typical Application Areas
The S7211 CDGB/P4A is ideally suited for high-performance machinery where precision, speed, and rigidity are non-negotiable. Key application areas include:
- Machine Tool Spindles (e.g., CNC milling and grinding machines)
- High-Frequency Motors and Spindles
- Precision Instrumentation and Measuring Equipment
- Robotic Drives and Automation Systems
