71948 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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71948 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71948 CD/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This back-to-back (DB) matched set features a P4A tolerance class and moderate preload (Class C), enabling it to handle combined radial and axial loads simultaneously with high stability. Its optimized design is ideal for high-speed operations and applications where high rigidity and precise rotational accuracy are critical.
71948 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71948 | Basic bearing designation |
| C | 15° contact angle design |
| D | Duplex arrangement |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DB | Back-to-back mounting configuration |
| C | Moderate preload (Class C) |
71948 CD/P4ADBC Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Stability: The back-to-back duplex arrangement creates a wide effective spread between load centers, significantly increasing system rigidity and moment load capacity. This configuration provides excellent operational stability under combined loads.
Precision Performance: Manufactured to P4A tolerance class standards, this bearing ensures minimal runout and vibration, making it suitable for high-precision applications. The moderate preload (Class C) eliminates internal clearance, enhancing positional accuracy and rotational precision.
High-Speed Capability: The phenolic cage material offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the bearing's limiting speed of 7,500 rpm. The optimized 15° contact angle provides balanced performance for both radial and axial loading conditions.
Superior Load Capacity: With a dynamic load rating of 83,475 lbf and static load rating of 144,000 lbf, this bearing set delivers exceptional durability and long service life under demanding operating conditions.
71948 CD/P4ADBC 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
- High-Speed Compressors: Rotary screw and centrifugal compressor systems
- Industrial Pumps: High-performance centrifugal and multistage pumps
- Robotics & Automation: Precision robotic joints and positioning systems
- Aerospace Components: Aircraft auxiliary systems and precision mechanisms
