71914 CD/P4ADBG19
71900 Series Super Precision Angular Contact Ball Bearings
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71914 CD/P4ADBG19 Bearing Product Overview & Core Advantages
The 71914 CD/P4ADBG19 is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set delivers superior performance in handling combined loads, including significant radial and axial loads in both directions. Manufactured to the stringent P4A tolerance class, it offers extremely tight dimensional control for high-precision spindle applications. Its preloaded configuration ensures minimal axial and radial play, providing outstanding high rigidity and stable rotational characteristics essential for machine tool spindles and other precision equipment.
71914 CD/P4ADBG19 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing designation indicating size series 19 and 70mm bore diameter |
| C | 15° contact angle design |
| D | Duplex back-to-back (DB) arrangement |
| P4A | High precision tolerance class with enhanced running accuracy |
| DB | Duplex back-to-back mounting |
| G19 | Specific preload level for optimal rigidity |
71914 CD/P4ADBG19 Bearing Structural Features & Performance Benefits
High Rigidity Design: The duplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and maintains precise shaft positioning under heavy cutting forces.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads simultaneously, making it ideal for applications with complex loading conditions.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at high speeds, supporting the impressive limiting speed of 24,000 rpm.
Precision Performance: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and minimal vibration for superior surface finish in machining operations.
Enhanced Durability: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and long service life in demanding industrial environments.
71914 CD/P4ADBG19 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring precision and rigidity
- Precision Spindles: PCB drilling machines, high-frequency motor spindles
- Industrial Machinery: High-speed pumps, compressors, and specialized gearboxes
- Robotics: Precision robot joints and articulated arms requiring high positional accuracy
- Aerospace Equipment: Guidance systems and precision instrumentation requiring reliable performance
