S71907 CB/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71907 CB/P4ADGA Bearing Product Overview & Core Advantages
The S71907 CB/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a universal matchable (SU) bearing, it can be mounted in pairs to handle combined loads—significant radial loads and bidirectional axial loads—simultaneously. Manufactured to the exacting P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed and high-rigidity applications. Its compact design, sealed construction, and pre-lubrication ensure long service life with minimal maintenance.
S71907 CB/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a bearing with a 15° contact angle. |
| 7 | Indicates a high-precision angular contact bearing series. |
| 1907 | Specifies the dimensional series: 35 mm bore, 55 mm OD, 20 mm width. |
| CB | Denotes a universal matchable (SU) design. Two bearings can be mounted in any combination (face-to-face, back-to-back) to optimize preload and rigidity. |
| P4A | Specifies the tolerance class, corresponding to ISO P4A/ABEC 7 Precision, with enhanced dimensional and running accuracy. |
| DGA | Indicates the bearing is sealed and pre-lubricated with grease. |
S71907 CB/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The double-row angular contact design provides superior high rigidity, enabling stable operation under heavy combined loads. The 15° contact angle is optimized to efficiently support both radial and bidirectional axial loads.
Precision and High-Speed Performance: Manufactured to P4A precision class standards, this bearing ensures minimal runout and vibration. The lightweight phenolic cage contributes to lower centrifugal forces, supporting a high limiting speed of 56,000 rpm.
Maintenance-Free Operation: The integral seals effectively protect against contamination, while the factory-applied grease lubrication provides long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
Universal Matching Capability: The CB (SU) designation allows for flexible mounting arrangements. When used in pairs, they can be configured to achieve the precise preload and stiffness required for the application.
S71907 CB/P4ADGA Bearing Typical Application Areas
The S71907 CB/P4ADGA is engineered for high-performance applications where precision, speed, and reliability are critical. Typical uses include:
- Machine Tool Spindles
- High-Speed Grinding and Milling Heads
- Precision Instrumentation and Measuring Equipment
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
