S71908 ACB/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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S71908 ACB/P4ADGB Bearing Product Overview & Core Advantages
The S71908 ACB/P4ADGB is a precision double-row angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to the exacting P4A tolerance class, this bearing excels at simultaneously handling combined radial and axial loads from both directions. Its compact design, featuring a light preload (Class B), ensures high system rigidity and rotational accuracy, making it an ideal solution for high-speed spindles and other precision machinery where minimal deflection is critical.
S71908 ACB/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71908 | Precision double-row angular contact ball bearing series with 40mm bore. |
| ACB | 25° contact angle and Light preload (Class B). |
| P4A | High precision tolerance class exceeding ABEC 7/ISO P4, with enhanced running accuracy specifications. |
| DGB | Universal Matchable (SU) arrangement. Two bearings are selectively matched to form a pre-loaded set for optimal performance. |
S71908 ACB/P4ADGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double-row design and 25° contact angle provide superior rigidity, enabling the bearing to effectively support combined loads and significant bidirectional axial loads, with a dynamic load rating of 1843 lbf.
High-Speed Performance: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 41,000 rpm, making it a true high-speed bearing.
Precision & Longevity: Manufactured to P4A tolerances with a sealed construction and pre-lubricated with grease, this bearing offers consistent, low-noise operation and extended service life in demanding environments, operating within a temperature range of -30°C to 110°C.
Matched Set Advantage: As a Universal Matchable (SU) bearing, it is designed to be paired with another identical bearing to create a precisely pre-loaded set, simplifying installation and ensuring optimal system performance.
S71908 ACB/P4ADGB Bearing Typical Application Areas
The S71908 ACB/P4ADGB is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Drives and Rotary Tables
