71816 CD/P4TGA
71800 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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71816 CD/P4TGA Bearing Product Overview & Core Advantages
The 71816 CD/P4TGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4 tolerance class, it guarantees minimal runout and consistent operation. Its extra light preload (Class A) minimizes friction and heat generation, making it ideal for high-speed spindles. The bearing is universally matchable (SU), allowing for flexible mounting arrangements in duplex sets to handle combined loads effectively. Its compact design, with optimized internal geometry, provides superior rigidity and operational reliability in the most demanding precision environments.
71816 CD/P4TGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71816 | Basic bearing designation, indicating a super-precision angular contact bearing with an 80mm bore, 100mm OD, and 30mm width. |
| CD | Indicates a 15° contact angle and that the bearing is universally matchable (SU). This allows two bearings to be mounted in either a back-to-back (DB) or face-to-face (DF) arrangement to support combined radial and axial loads. |
| P4 | Denotes the tolerance class, signifying extremely tight dimensional and running accuracy standards superior to ABEC-7. |
| TGA | Specifies the cage material: a phenolic resin cage. This lightweight cage contributes to lower centrifugal forces, reduced friction, and higher limiting speeds, especially in oil-mist lubrication systems. |
71816 CD/P4TGA Bearing Structural Features & Performance Benefits
Optimized Internal Geometry for High Rigidity: The 15° contact angle and precision-ground raceways are engineered to provide high rigidity, essential for minimizing deflection under heavy cutting loads in machine tools.
Superior Load Capacity: With a dynamic load rating of 7020 lbf and a static load rating of 12150 lbf, this bearing is capable of handling significant combined radial and axial loads simultaneously.
Exceptional High-Speed Performance: The combination of the lightweight phenolic cage (TGA), extra light preload, and P4-grade precision enables a very high limiting speed of 28,000 rpm. This makes it a top choice for high-frequency spindles.
Precision Materials: Manufactured from high-purity chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance over a wide temperature range (-30°C to 110°C).
71816 CD/P4TGA Bearing Typical Application Areas
The 71816 CD/P4TGA is engineered for high-performance applications where speed, precision, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Robotics: High-accuracy joints and arm assemblies requiring minimal backlash.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical navigation and control systems.
- High-Frequency Motors: Spindles for PCB drilling and other micro-machining applications.
