71818 CDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71818 CDGB/P4 Bearing Product Overview & Core Advantages
The 71818 CDGB/P4 is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 tolerance class, this single bearing is part of a universally matchable (SU) set, allowing for precise preload control when paired with an identical bearing. Its key advantages include the ability to accommodate combined loads (radial and axial), a light preload (Class B) for reduced friction and heat generation, and optimized performance in high-speed operations up to 15,000 rpm. The phenolic resin cage ensures smooth operation at high velocities, making it an ideal choice for high-reliability, precision machinery.
71818 CDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71818 | Basic bearing designation indicating a metric, angular contact ball bearing with a 90mm bore, 115mm OD, and 13mm width. |
| C | Specifies a 15° contact angle, optimized for high axial load capacity and high-speed performance. |
| D | Indicates a light preload (Class B), which minimizes deflection and ensures high running accuracy. |
| GB | Signifies that the bearing is universally matchable (SU). Two identical bearings can be paired in a back-to-back (DB) or face-to-face (DF) arrangement. |
| /P4 | Denotes a very high tolerance class, signifying extremely tight dimensional and running accuracy for precision applications. |
71818 CDGB/P4 Bearing Structural Features & Performance Benefits
- High Precision and Rigidity: Manufactured to P4 tolerance standards with a light preload, this bearing provides exceptional running accuracy and system stiffness, critical for minimizing deflection under load.
- Superior Load Capacity: The 15° contact angle design enables the bearing to efficiently handle significant combined radial and axial loads simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the open design facilitates efficient lubrication, allowing for a high limiting speed of 15,000 rpm.
- Universal Matching Capability: The Universal Matchable (SU) feature allows for simplified mounting and precise preload adjustment when used in pairs, enhancing system performance and simplifying inventory.
- Durable Construction: Made from chrome steel for both rings and balls, the bearing offers high wear resistance and long service life under demanding conditions.
71818 CDGB/P4 Bearing Typical Application Areas
The 71818 CDGB/P4 is engineered for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in high-ratio, high-speed transmission systems.
- Industrial Pumps and Compressors: For handling axial and radial loads in rotating assemblies.
- Robotics and Automation: High-accuracy joints and rotary axes.
- Medical and Laboratory Equipment: Centrifuges and other high-speed precision instruments.
