S71915 CE/P4AQBCB
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71915 CE/P4AQBCB Bearing Product Overview & Core Advantages
The S71915 CE/P4AQBCB is a super-precision angular contact ball bearing designed for the most demanding industrial applications. This matched quadruplex back-to-back (QBC) arrangement delivers exceptional system rigidity and stability, capable of supporting complex combined loads including radial and bidirectional axial forces. Manufactured to P4A tolerance class and featuring a phenolic cage with grease lubrication, this bearing is engineered for high-speed operation and long-term reliability in precision machinery.
S71915 CE/P4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 CE | Super-precision angular contact bearing series with 75mm bore diameter |
| P4A | High-precision tolerance class with restricted runout tolerances |
| QBC | Quadruplex Back-to-Back matched arrangement of 4 bearings |
S71915 CE/P4AQBCB Bearing Structural Features & Performance Benefits
Enhanced System Rigidity: The quadruplex back-to-back configuration creates an extremely stiff bearing system that minimizes deflection under heavy loads, making it ideal for applications requiring maximum positional accuracy.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads in both directions. The dynamic load rating of 13,320 lbf and static load rating of 15,300 lbf ensure reliable performance under demanding conditions.
High-Speed Capability: The phenolic cage material and precision manufacturing enable operation at limiting speeds up to 28,000 rpm, while the grease lubrication provides consistent performance across the entire temperature range of -30°C to 110°C.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
S71915 CE/P4AQBCB Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling applications
- Precision Gearboxes: Industrial transmission systems requiring high rigidity and accuracy
- Robotic Systems: High-precision robotic arms and automation equipment
- Aerospace Components: Flight control systems and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical tools
- Test & Measurement: Precision rotary tables and metrology equipment
