S71926 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71926 CDGA/P4A Bearing Product Overview & Core Advantages
The S71926 CDGA/P4A is a super-precision angular contact ball bearing designed for applications demanding the highest levels of accuracy, rigidity, and speed. As a single bearing with a 15° contact angle and P4A tolerance class, it is optimized to handle combined loads (radial and axial) simultaneously. Its extra light preload (Class A) ensures minimal runout and smooth operation, making it ideal for high-precision spindles and other critical machinery where exceptional rotational accuracy is non-negotiable.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S | Super-precision bearing |
| 7 | Angular contact ball bearing |
| 1926 | Bore Diameter: 130 mm, Outside Diameter: 180 mm, Width: 24 mm |
| CD | Contact angle of 15° |
| GA | Universal Matchable (SU) bearing in a set of 2, preloaded to Class A (Extra Light) |
| P4A | Tolerance class superior to ABEC 7, with running accuracy requirements |
S71926 CDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The optimized 15° contact angle and high-quality chrome steel construction provide excellent resistance to deformation under combined loads. With a dynamic load rating of 20,768 lbf and a static load rating of 24,300 lbf, it offers reliable performance in demanding conditions.
High-Speed Performance: The lightweight phenolic resin cage (TN9 style) reduces centrifugal forces, while the precision P4A grading and optimized internal geometry contribute to a high limiting speed of 11,000 rpm.
Pre-lubricated and Sealed: The bearing is factory-filled with grease and features seals, protecting against contamination and providing long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
Universal Matching: Designated as Universal Matchable (SU), these bearings can be universally paired in any combination without a performance penalty, simplifying inventory and assembly for back-to-back (DB) or face-to-face (DF) arrangements.
S71926 CDGA/P4A Bearing Typical Application Areas
The S71926 CDGA/P4A is engineered for the most demanding high-precision and high-speed applications, including:
- Machine Tool Spindles: CNC milling centers, grinding spindles, and lathes.
- Precision Instrumentation: High-speed measuring and testing equipment.
- High-Frequency Motors and Spindles: Where minimal runout and high rigidity are critical.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other precision mechanisms.
