S71915 ACD/P4AQBCB
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
S71915 ACD/P4AQBCB Bearing Product Overview & Core Advantages
The S71915 ACD/P4AQBCB is a precision quadruplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched set of four bearings is arranged in a back-to-back (QBC) configuration, providing superior stability and moment load capacity. Engineered to a P4A tolerance class, it ensures minimal runout and high rotational accuracy. Its primary advantages include the ability to handle combined radial and axial loads simultaneously, high operational rigidity due to its quadruplex design, and reliable performance in high-speed scenarios up to 28,000 rpm, making it ideal for ultra-precise and high-reliability machinery.
S71915 ACD/P4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 | Denotes the bearing series and size. 'S' often indicates a high-precision series. |
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Specifies the tolerance class, indicating very high precision levels for both bore and outer diameter. |
| QBC | Signifies the bearing is part of a Quadruplex Back-to-Back matched set. |
| B | Indicates a Light preload (Class B) for reduced deflection and enhanced rigidity. |
S71915 ACD/P4AQBCB Bearing Structural Features & Performance Benefits
- High Rigidity and Stability: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise alignment and positioning.
- Superior Load Capacity: Engineered with a 25° contact angle and constructed from chrome steel, this bearing is optimized to handle significant combined radial and axial loads.
- Optimized High-Speed Performance: The phenolic cage is lightweight and robust, contributing to lower centrifugal forces and smooth operation at the limiting speed of 28,000 rpm.
- Precision and Longevity: Manufactured to P4A tolerance class with a sealed design and pre-lubricated with grease, it offers consistent high-precision performance and extended service life in demanding conditions.
S71915 ACD/P4AQBCB Bearing Typical Application Areas
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- Aerospace and Defense Positioning Systems
- High-Speed Robotic Arms and Actuators
- Advanced Medical and Laboratory Equipment
