S71912 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71912 CB/P4A Bearing Product Overview & Core Advantages
The S71912 CB/P4A is a precision single-row angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, it excels in handling combined radial and axial loads simultaneously. Its compact design, featuring a 13 mm width, makes it ideal for space-constrained, high-precision machinery. The bearing comes preloaded and pre-lubricated, ensuring immediate high performance, superior running accuracy, and reliable operation in high-speed scenarios up to 22,000 rpm.
S71912 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7 | Bearing Series | Indicates a high-precision angular contact bearing series. |
| 1912 | Size Designation | Specifies the bore diameter (60 mm), outside diameter (85 mm), and width (13 mm). |
| CB | Contact Angle & Clearance | Denotes a 15° contact angle and specific internal clearance, optimized for high rigidity and moderate axial load capacity. |
| P4A | Tolerance Class | Signifies a P4 precision grade (equivalent to ABEC-7), ensuring extremely tight dimensional and running accuracy tolerances. |
S71912 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and preload provides exceptional stiffness, minimizing deflection under load for superior positional accuracy.
- Superior Load Capacity: Engineered to support significant combined loads (radial and one-direction axial), with a dynamic load rating of 2340 lbf and a static load rating of 1980 lbf.
- Optimized High-Speed Performance: The lightweight phenolic resin cage and precision-ground chrome steel components enable smooth operation at limiting speeds of 22,000 rpm, reducing friction and heat generation.
- Sealed and Lubricated for Life: As a sealed and pre-lubricated unit, it is protected from contamination and is ready for immediate use, offering long-term, maintenance-free operation within its specified temperature range.
S71912 CB/P4A Bearing Typical Application Areas
The S71912 CB/P4A is ideally suited for high-performance applications requiring precision and speed, such as:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Robotic Drives and Actuators
- Medical and Dental Equipment
- Aerospace Instrumentation
