S71909 CDGC/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71909 CDGC/P4A Bearing Product Overview & Core Advantages
The S71909 CDGC/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a single bearing from a Universal Matchable (SU) set, it offers outstanding dimensional stability and running accuracy. Its key advantages include the ability to handle combined loads (radial and axial), high rigidity due to its design, and superior performance enabled by its P4A tolerance class and phenolic cage. This makes it ideal for high-precision, high-reliability spindles and machinery.
S71909 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a super-precision bearing |
| 7 | Indicates an angular contact ball bearing |
| 1909 | Specifies the bearing size (45mm bore, 68mm OD, 12mm width) |
| CD | Signifies a 15° contact angle and specific internal design for high-speed operation |
| GC | Denotes a Moderate preload (Class C) for optimal stiffness |
| P4A | Indicates an ABEC 7 / ISO P4A tolerance class for extreme precision |
S71909 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with a 15° contact angle and Moderate preload (C), this bearing provides exceptional rotational accuracy and stiffness, minimizing deflection under load.
- Superior High-Speed Capability: The lightweight phenolic resin cage ensures stable operation and low centrifugal forces, contributing to a high limiting speed of 46,000 rpm. The optimized internal geometry further enhances its high-speed performance.
- Excellent Load Capacity: With a dynamic load rating of 2925 lbf and a static load rating of 2138 lbf, it reliably handles significant combined radial and axial loads.
- Sealed and Pre-Lubricated: The sealed design with grease lubrication protects against contamination and provides long-term, maintenance-free operation within a wide temperature range of -30°C to 110°C.
S71909 CDGC/P4A Bearing Typical Application Areas
The S71909 CDGC/P4A is engineered for the most demanding precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Spindles: PCB drilling and routing machines.
- Other High-Performance Machinery: Where uncompromising accuracy, speed, and rigidity are required.
