71922 CD/P4AQBCB
71900 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
71922 CD/P4AQBCB Bearing Product Overview & Core Advantages
The 71922 CD/P4AQBCB is a precision quadruplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This metric system bearing features a light preload (Class B) and is supplied as a matched set of four bearings in a back-to-back (QBC) arrangement. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads from both directions—simultaneously, making it ideal for high-precision, high-stiffness machinery where rotational accuracy is paramount.
71922 CD/P4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| 71922 | Basic bearing series and size designation (Bore: 110mm, OD: 150mm, Width: 80mm) |
| CD | Indicates a duplex bearing with a specific internal design and contact angle (15°). In this context, it forms part of the quadruplex set's specification. |
| P4A | Denotes an ultra-high precision tolerance class, exceeding standard P4 levels, ensuring minimal runout and superior rotational accuracy. |
| QBC | Specifies the matched arrangement as Quadruplex Back-to-Back. This configuration provides maximum system rigidity and moment load capacity. |
| B | Indicates the light preload class, which minimizes deflection and optimizes bearing performance under operational conditions. |
71922 CD/P4AQBCB Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system capable of withstanding heavy combined radial and axial loads as well as significant moment loads. This configuration is essential for applications requiring extreme shaft positioning accuracy.
High-Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees exceptional dimensional stability and running accuracy. The 15° contact angle provides an optimal balance between axial and radial load capacity.
Optimized High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio, reducing centrifugal forces and enabling stable operation at the limiting speed of 16,250 rpm. The open design allows for efficient lubrication management in high-speed applications.
Superior Material Construction: Manufactured from chrome steel for both rings and balls, the bearing delivers high fatigue life and durability under demanding operating conditions.
71922 CD/P4AQBCB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Gearboxes: Industrial gearboxes and transmission systems where high load capacity and minimal deflection are critical.
- High-Frequency Spindles: PCB drilling, precision engraving, and other high-RPM machining applications.
- Robotic Arm Joints: Precision robotics requiring high moment stiffness and positional accuracy.
- Medical Equipment: High-speed dental handpieces and medical imaging device rotors.
