71817 CD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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71817 CD/P4DGB Bearing Product Overview & Core Advantages
The 71817 CD/P4DGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a Universal Matchable (SU) bearing supplied in a pre-loaded duplex set, it delivers superior performance in handling combined radial and axial loads. Manufactured to P4 tolerance class, this bearing ensures high running accuracy and is optimized for high-speed operation, making it an ideal solution for high-precision machinery and spindles.
71817 CD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71817 | Basic bearing designation indicating size series and bore diameter (85mm). |
| CD | Indicates a duplex arrangement with a 15° contact angle in a universal matchable configuration. |
| P4 | Specifies the tolerance class P4, denoting very high precision. |
| DGB | Indicates a Light preload (Class B) applied to the matched set. |
71817 CD/P4DGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex (double row) design and 15° contact angle provide excellent rigidity and enable the bearing to sustain significant combined loads.
Precision & High-Speed Performance: The P4 tolerance class ensures minimal runout and vibration. Combined with the lightweight phenolic cage, it allows for a high limiting speed of 28,000 rpm.
Optimized Material & Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high durability and fatigue resistance. The Universal Matchable (SU) feature allows for flexible mounting arrangements without the need for selective pairing.
71817 CD/P4DGB Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Applications
- Industrial Pumps and Compressors
- Robotic and Automation Systems
