S71926 CD/HCP4ATBTC
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71926 CD/HCP4ATBTC Bearing Product Overview & Core Advantages
The S71926 CD/HCP4ATBTC is a metric system, P4A super-precision triple set of 15° contact angle angular contact ball bearings arranged in a Back-to-Back (TBT) configuration. This premium bearing solution is engineered for applications demanding exceptional rotational accuracy, high system rigidity, and reliable performance under combined radial and axial loads. Its ceramic balls and phenolic cage contribute to superior high-speed capability and reduced operational friction, making it ideal for the most demanding high-precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a high-precision bearing series. |
| 1926 | Specifies the size: 130 mm bore, 180 mm OD, 72 mm width. |
| CD | Signifies a Moderate (Class C) preload applied to the bearing set. |
| HC | Denotes a Hybrid Ceramic construction (steel rings with ceramic balls). |
| P4A | Identifies the tolerance class, representing very high running accuracy. |
| TBT | Specifies the matched arrangement as a Triplex Back-to-Back set of three bearings. |
| C | Indicates the contact angle is 15°. |
S71926 CD/HCP4ATBTC Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Moment Load Capacity: The Triplex Back-to-Back (TBT) arrangement of three bearings creates an extremely rigid bearing system, capable of withstanding high moment loads and providing exceptional shaft support. This configuration significantly enhances the stability of the entire spindle or shaft assembly.
Superior High-Speed Performance: The use of ceramic (silicon nitride) balls reduces centrifugal forces, lowers friction, and minimizes heat generation. Combined with the lightweight, self-lubricating phenolic resin cage, this allows the bearing to achieve a high limiting speed of 11,000 rpm with smooth operation.
High Precision and Long Service Life: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration for superior machining quality. The pre-applied grease lubrication and sealed design protect against contamination, ensuring long-term reliability and consistent performance.
Optimized Load Ratings: With a dynamic load rating of 44,775 lbf and a static load rating of 73,125 lbf, this bearing set is built to handle significant combined loads throughout its operational life.
S71926 CD/HCP4ATBTC Bearing Typical Application Areas
The S71926 CD/HCP4ATBTC is specifically designed for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- High-Speed CNC Machining Centers and Grinding Spindles
- Precision Machine Tool Spindles
- High-frequency Motor Spindles
- Advanced Aerospace and Defense instrumentation
- Other high-accuracy rotary systems requiring super-precision bearings.
