S71919 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71919 CDGA/P4A Bearing Product Overview & Core Advantages
The S71919 CDGA/P4A is a metric precision angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. As a single bearing with an Extra Light (Class A) preload, it delivers high rotational precision and rigidity. Its design is optimized to handle combined loads—simultaneous radial and axial forces—making it an ideal solution for high-speed spindles and other precision machinery. The bearing features a sealed construction and universal matchability (SU), allowing for flexible mounting arrangements in sets of four to achieve optimal system performance.
S71919 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7 | Bearing Series | Indicates a high-precision, super-precision angular contact ball bearing series. |
| 1919 | Size Designation | Specifies the bore diameter (95 mm), outside diameter (130 mm), and width (18 mm). |
| CD | Contact Angle & Preload | Denotes a 15° contact angle and an Extra Light (Class A) preload for high-speed, low-heat operation. |
| G | Cage Type | Signifies a phenolic resin cage, contributing to low friction and high-speed capability. |
| A | Accuracy Class | Indicates the bearing meets the P4A tolerance class, ensuring ultra-precision dimensions and runout. |
| /P4A | Tolerance Class | Reinforces the ABEC 7 / P4 precision level for the tightest dimensional and running accuracy. |
S71919 CDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The double row angular contact design and Class A preload provide superior axial and radial stiffness, minimizing deflection under load for exceptional machining accuracy.
Optimized Load Capacity: With a 15° contact angle, this bearing efficiently handles combined radial and axial loads. Its dynamic load rating of 11,115 lbf and static rating of 12,375 lbf ensure reliable performance in demanding applications.
Superior High-Speed Performance: The lightweight phenolic cage (G) and optimized internal geometry enable a high limiting speed of 21,000 rpm, making it ideal for high-speed spindles.
Sealed and Pre-Lubricated: The sealed construction with grease lubrication protects against contamination and provides long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S71919 CDGA/P4A Bearing Typical Application Areas
The S71919 CDGA/P4A is specifically designed for high-precision, high-speed machinery, including:
- Machine Tool Spindles (CNC machining centers, grinding spindles)
- High-Frequency Motors and Spindles
- Precision Robotics and Automation Equipment
- Medical and Dental Equipment Spindles
- Aerospace Test and Measurement Apparatus
