71910 CE/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
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71910 CE/P4ADBA Bearing Product Overview & Core Advantages
The 71910 CE/P4ADBA is a metric precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This bearing is supplied as a duplex back-to-back (DB) matched set with an Extra Light (Class A) preload, making it ideal for machine tool spindles and other high-precision machinery. Its primary advantage lies in its ability to support combined loads (radial and axial) simultaneously while maintaining high running accuracy under high-speed operation. The P4A tolerance class ensures superior dimensional and running accuracy for critical applications.
71910 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71910 | Bearing series and size designation (10mm bore x 72mm OD x 24mm width) |
| CE | Contact angle of 15° |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DB | Duplex Back-to-Back arrangement for moment load capacity |
| A | Extra Light preload classification |
71910 CE/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Moment Load Capacity: The duplex back-to-back (DB) arrangement creates a rigid bearing system capable of withstanding moment loads, making it suitable for applications requiring high shaft stability and positioning accuracy.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads. The dynamic load rating of 4680 lbf and static load rating of 3825 lbf ensure reliable performance under demanding conditions.
High-Speed Performance: The phenolic resin cage provides excellent strength-to-weight ratio, contributing to lower centrifugal forces and enabling operation at limiting speeds up to 46,000 rpm. The precision-ground chrome steel balls and raceways minimize friction and heat generation.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
71910 CE/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers
- High-Speed Machining Centers: Where rotational accuracy and rigidity are critical
- Precision Instrumentation: Measuring devices and laboratory equipment
- Robotics: High-accuracy robot joints and positioning systems
- Medical Equipment: Dental handpieces and surgical tools requiring precision motion
- Aerospace Components: Guidance systems and auxiliary power units
