71904 CD/P4ATBTC
71900 Series Super Precision Angular Contact Ball Bearings
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71904 CD/P4ATBTC Bearing Product Overview & Core Advantages
The 71904 CD/P4ATBTC is a metric precision angular contact ball bearing designed for high-performance applications requiring exceptional rigidity and accuracy. This bearing features a triplex back-to-back (TBT) matched arrangement with moderate preload (Class C), delivering superior stability under combined radial and axial loads. Manufactured to P4A tolerance class with a 15° contact angle, it ensures precise rotational accuracy and is ideal for high-speed machinery demanding maximum rigidity and minimal deflection.
71904 CD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71904 | Basic bearing designation with 20mm bore, 37mm OD |
| CD | Optimized internal design for high-precision applications |
| P4A | High precision tolerance class with enhanced running accuracy |
| TBT | Triplex Back-to-Back matched arrangement for maximum rigidity |
| C | Moderate preload classification for optimal performance balance |
71904 CD/P4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity Design: The triplex back-to-back arrangement creates an exceptionally rigid bearing system that minimizes shaft deflection under heavy combined loads, making it ideal for precision applications requiring stable rotational characteristics.
Enhanced Load Capacity: With a radial dynamic load rating of 2925 lbf and static load rating of 2171 lbf, this bearing configuration effectively handles significant radial and axial loads simultaneously while maintaining precision alignment.
High-Speed Performance: The phenolic cage material and optimized internal geometry enable reliable operation at limiting speeds up to 100,000 rpm, supporting demanding high-speed applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), ensuring consistent high-precision performance in critical applications.
71904 CD/P4ATBTC Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding spindles
- Precision Industrial Pumps - Chemical processing and high-pressure fluid handling systems
- High-Speed Compressors - Air and gas compression equipment requiring stable rotor support
- Robotic Systems - Precision joints and high-accuracy positioning mechanisms
- Medical Equipment - Dental handpieces and laboratory instrumentation
- Aerospace Components - Guidance systems and auxiliary power units
