S71910 CD/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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Ball & Washer Dimensions
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S71910 CD/P4ADGB Bearing Product Overview & Core Advantages
The S71910 CD/P4ADGB is a super-precision angular contact ball bearing engineered for the most demanding applications. Operating under the stringent P4A tolerance class, it delivers exceptional running accuracy and dimensional stability. Its universal matchable (SU) design allows for flexible mounting in pairs to support combined loads (radial and axial) from both directions. With a light preload (Class B) and a 15° contact angle, this bearing is optimized for high-speed operation up to 34,000 rpm while maintaining high system rigidity, making it an ideal choice for high-precision spindles and machinery.
S71910 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71910 | Series designation for a super-precision, 50mm bore angular contact ball bearing. |
| C | Specifies a 15° contact angle. |
| D | Indicates the bearing is a universal matchable (SU) design. |
| P4A | Denotes an ultra-high tolerance class superior to ABEC 7, ensuring extreme precision in dimensions and running accuracy. |
| DGB | A sealed bearing, pre-lubricated with grease. |
S71910 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and universal matching capability enable the bearing to be mounted in pairs (back-to-back or face-to-face) to create a highly rigid system that efficiently supports significant combined radial and axial loads in both directions.
- Super-Precision Performance: Manufactured to P4A tolerance standards, this bearing guarantees minimal runout and vibration, which is critical for achieving superior surface finishes and positional accuracy in precision equipment.
- Optimized High-Speed Operation: The phenolic cage is lightweight and robust, contributing to lower centrifugal forces and stable performance at the high limiting speed of 34,000 rpm. The 15° contact angle provides an excellent balance between axial load capacity and speed capability.
- Sealed and Lubricated for Life: The integrated seals (DGB) effectively protect against contamination and retain the factory-applied grease, making the bearing maintenance-free and suitable for applications where re-lubrication is difficult.
S71910 CD/P4ADGB Bearing Typical Application Areas
The S71910 CD/P4ADGB is designed for high-performance machinery requiring exceptional precision and speed. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Medical and Dental Equipment (e.g., high-speed handpieces)
- Aerospace Instrumentation and other critical rotary systems.
