71907 CD/P4ADGC
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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71907 CD/P4ADGC Bearing Product Overview & Core Advantages
The 71907 CD/P4ADGC is a precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. As a universally matchable (SU) bearing supplied in a pre-set pair, it excels at handling combined loads (radial and axial) simultaneously. Its P4A tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other demanding precision machinery. The phenolic cage and optimized 15° contact angle contribute to stable performance at high rotational speeds.
71907 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing series and size designation (35mm bore, 55mm OD, 20mm width) |
| CD | Specifies a universal matchable (SU) bearing pair with a specific preload and contact angle arrangement |
| P4A | Indicates a high-precision tolerance class with enhanced running accuracy and dimensional stability |
| DGC | Denotes the use of a phenolic resin cage, suitable for high-speed operation and offering good strength-to-weight ratio |
71907 CD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and universal matching (SU) enable the bearing pair to support significant combined radial and axial loads from both directions, providing high system rigidity.
- Superior High-Speed Performance: The lightweight phenolic cage (DGC) reduces centrifugal forces, while the 15° contact angle and precision grinding (P4A class) contribute to a high limiting speed of 56,000 rpm, making it an excellent high-speed bearing.
- Precision Engineering: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring extreme positional accuracy and smooth operation.
- Optimized Material Selection: Components made from chrome steel provide high hardness and durability, ensuring long service life under demanding conditions.
71907 CD/P4ADGC Bearing Typical Application Areas
The 71907 CD/P4ADGC is ideally suited for high-precision, high-speed rotational systems, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Aerospace Control Systems
