71910 CD/P4ATBTC
71900 Series Super Precision Angular Contact Ball Bearings
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71910 CD/P4ATBTC Bearing Product Overview & Core Advantages
The 71910 CD/P4ATBTC is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rigidity and accuracy. This bearing is supplied as a matched triplex set in a back-to-back (TBT) arrangement, providing superior stability under combined loads. Manufactured to P4A tolerance class with a moderate preload (Class C), it delivers outstanding rotational precision and is optimized for high-speed operation up to 46,000 rpm. Its compact design and phenolic cage make it ideal for demanding machinery where space constraints and reliability are critical.
71910 CD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71910 | Basic bearing series and size designation (50mm bore, 72mm OD) |
| CD | Contact angle of 15° |
| P4A | High precision tolerance class (superior to ABEC 7) |
| TBT | Triplex Back-to-Back matched arrangement (set of 3 bearings) |
| C | Moderate preload classification |
71910 CD/P4ATBTC Bearing Structural Features & Performance Benefits
Matched Triplex Back-to-Back Configuration: Three bearings are precisely matched and arranged back-to-back, creating an extremely rigid bearing system that effectively resists moment loads and shaft deflection.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling stable operation at limiting speeds of 46,000 rpm.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for precision applications.
Optimized Load Capacity: The 15° contact angle and triplex arrangement provide superior combined load carrying capacity (dynamic: 6,548 lbf, static: 6,975 lbf) while maintaining high-speed performance.
Pre-lubricated Design: Factory lubricated for immediate operation across a wide temperature range (-30°C to 110°C), reducing maintenance requirements.
71910 CD/P4ATBTC Bearing Typical Application Areas
Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes requiring extreme rigidity and accuracy.
Precision Instrumentation: Measuring equipment, optical systems, and laboratory instruments where minimal vibration is critical.
High-Speed Motors: Spindle motors, servo motors, and other high-RPM electric motors demanding precise rotational characteristics.
Aerospace Components: Gyroscopes, navigation systems, and other aerospace applications requiring reliable performance under combined loads.
Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems where precision and reliability are paramount.
