7011 CD/P4AQBCB
7000 Series 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
7011 CD/P4AQBCB Bearing Product Overview & Core Advantages
The 7011 CD/P4AQBCB is a precision quadruplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched set configuration features a Back-to-Back (QBC) arrangement, providing superior stability and the ability to handle significant combined loads (radial and axial) from multiple directions. Manufactured to P4A tolerance class with a Light preload (Class B), it ensures smooth, high-precision operation, making it ideal for high-performance machinery where high rigidity and minimal runout are critical.
7011 CD/P4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7011 | Basic bearing designation (55mm bore, 90mm OD) | Defines the core bearing dimensions. |
| CD | 15° contact angle | Optimized for axial load capacity and high-speed performance. |
| P4A | High-precision tolerance class | Guarantees extremely tight dimensional and running accuracy for precision applications. |
| QBCB | Quadruplex Back-to-Back matched set | Four bearings supplied as a pre-matched set in a back-to-back configuration for maximum system rigidity and moment load resistance. |
7011 CD/P4AQBCB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The quadruplex back-to-back arrangement creates an extremely stiff bearing system capable of withstanding heavy combined loads and moment loads. This configuration significantly enhances the overall stability of the spindle or shaft.
Precision Performance: Built to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for achieving high surface finishes and machining accuracy. The light preload (Class B) eliminates internal clearance, further improving rotational accuracy and system stiffness.
High-Speed Capability: The phenolic cage is lightweight and robust, offering low friction and excellent performance at the high limiting speed of 34,000 rpm. The 15° contact angle provides a balanced design for both high-speed operation and axial load carrying capacity.
Material & Lubrication: Constructed from chrome steel for both rings and balls, ensuring high durability and fatigue life. The bearing is supplied lubricated, ready for installation and initial operation.
7011 CD/P4AQBCB Bearing Typical Application Areas
The 7011 CD/P4AQBCB is engineered for high-precision, high-rigidity applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring ultra-fine surface finishes.
- High-Frequency Motor Spindles: Where minimal runout and high rotational accuracy are paramount.
- Industrial Pumps & Compressors: For demanding rotary applications.
