71909 CDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71909 CDGC/P4A Bearing Product Overview & Core Advantages
The 71909 CDGC/P4A is a precision angular contact ball bearing designed for high-performance applications requiring exceptional accuracy and rigidity. As a single bearing from a universally matchable (SU) set of three, it offers outstanding versatility for preloaded arrangements. Its key characteristics include a 15° contact angle and moderate preload (Class C), enabling it to handle combined radial and axial loads simultaneously. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy, making it ideal for high-speed, high-precision machinery where reliability is critical.
71909 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71909 | Basic bearing series and size designation |
| CD | Contact angle of 15° |
| GC | Moderate preload (Class C) |
| P4A | High precision tolerance class |
71909 CDGC/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with tight dimensional control (bore diameter tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 15° contact angle and moderate preload configuration provide excellent performance under combined radial and axial loads, with a dynamic load rating of 2925 lbf and static load rating of 2138 lbf.
High-Speed Capability: Featuring a phenolic cage and optimized internal design, this bearing achieves a limiting speed of 41,000 rpm, making it suitable for high-speed applications.
Premium Material Selection: Constructed from chrome steel for both rings and balls, ensuring high durability and wear resistance. The phenolic cage offers excellent dimensional stability and reduced friction.
Universal Matching Design: As part of a universally matchable set of three bearings, it enables flexible mounting arrangements and simplified preload control in complex bearing systems.
71909 CDGC/P4A Bearing Typical Application Areas
- Machine tool spindles and high-precision machining centers
- High-speed motors and precision gearboxes
- Medical equipment and laboratory instruments
- Aerospace components and navigation systems
- Robotic joints and automation equipment
- Precision measuring instruments and optical devices
