71900 CE/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71900 CE/P4ADBC Bearing Product Overview & Core Advantages
The 71900 CE/P4ADBC is a precision angular contact ball bearing designed for demanding applications requiring high rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement bearing set is preloaded to provide moderate preload (Class C), ensuring exceptional system stiffness and minimal axial/radial runout. Its compact design, with a 10 mm bore and 22 mm outside diameter, makes it ideal for high-speed spindles and precision mechanisms where space is limited and performance is critical.
71900 CE/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| 71900 | Ultra-light series, 10 mm bore diameter |
| CE | 15° contact angle, optimized for high-speed operation |
| P4A | High precision tolerance class (exceeds ABEC 7) |
| DB | Duplex Back-to-Back mounting arrangement |
| C | Moderate preload classification |
71900 CE/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and maintains precise shaft positioning. Combined with P4A tolerance class, this ensures exceptional running accuracy.
Optimized High-Speed Performance: Featuring a phenolic resin cage and 15° contact angle, this bearing achieves superior high-speed capability with a limiting speed of 185,000 rpm. The lightweight cage reduces centrifugal forces, while the moderate preload minimizes heat generation.
Superior Load Capacity: Despite its compact bearing dimensions (10×22×12 mm), it delivers substantial load carrying capacity with a dynamic load rating of 731 lbf and static load rating of 351 lbf, suitable for combined radial and axial loads.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, this bearing provides excellent wear resistance and long service life in precision applications.
71900 CE/P4ADBC Bearing Typical Application Areas
The 71900 CE/P4ADBC is specifically engineered for high-precision, high-speed applications including:
- Machine tool spindles and high-speed machining centers
- Precision grinding spindles and dental handpieces
- High-frequency motor spindles and servo motors
- Instrumentation bearings for measuring equipment
- Robotic joints and automation systems requiring precise motion control
