S71922 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71922 CD/P4A Bearing Product Overview & Core Advantages
The S71922 CD/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing with a 15° contact angle, it is optimized to support high combined loads, accommodating significant radial loads and axial loads in one direction. Manufactured to the exacting P4 (ABEC-7) tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and other precision machinery. Its preloaded configuration and phenolic cage contribute to its outstanding performance in demanding operational environments.
S71922 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a series of high-precision angular contact ball bearings. |
| 1922 | Specifies the bore diameter (110 mm) and outside diameter (150 mm) according to standard dimension series. |
| C | Denotes a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Signifies that the bearing is supplied with a preload, enhancing rigidity and rotational accuracy. |
| P4A | Specifies the tolerance class P4 (ABEC-7), indicating very high precision levels for dimensional and running accuracy. |
S71922 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and applied preload provides high system rigidity, minimizing deflection under load and ensuring precise shaft positioning, which is critical for machine tool spindles.
- Superior Load Capacity: Engineered to handle combined loads effectively, this bearing offers a high dynamic load rating of 14040 lbf, making it robust for demanding applications.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel components and optimized internal geometry contribute to a high limiting speed of 8,000 rpm.
- Sealed and Lubricated for Longevity: As a sealed bearing that is pre-lubricated, it is protected from contamination and is ready for immediate use, offering a long service life with minimal maintenance in appropriate operating conditions.
S71922 CD/P4A Bearing Typical Application Areas
The S71922 CD/P4A is ideally suited for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles (e.g., milling, grinding, and machining centers)
- High-Speed Motors and Drives
- Precision Instrumentation and measuring equipment
- Robotics and automation arms requiring high positional accuracy
- Medical Equipment such as dental handpieces and small centrifuges
