S71915 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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S71915 CD/P4A Bearing Product Overview & Core Advantages
The S71915 CD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Its primary advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. Manufactured to a P4 (ABEC-7) tolerance class and featuring a phenolic cage, this bearing is optimized for high-speed operation and stable performance in demanding environments. Its compact cross-section and sealed design make it an ideal, reliable component for precision spindles and machinery.
S71915 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 | Denotes the bearing series and size (75mm bore, 105mm OD, 16mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed performance and moderate axial load capacity. |
| D | Indicates that the bearing is manufactured with a high-precision P4 (ABEC-7) tolerance class. |
| P4A | Further defines the precision grade and specific fitting tolerances per ISO standards. |
S71915 CD/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The single-row design with a 15° contact angle and P4 tolerance provides excellent running accuracy and system rigidity, crucial for minimizing deflection in precision spindles.
Superior Load Capacity: Engineered to support combined radial and axial loads efficiently. With a dynamic load rating of 8055 lbf and a static load rating of 8438 lbf, it offers reliable performance under significant stress.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 12,000 rpm. The 15° contact angle further contributes to lower heat generation at high rotational speeds.
Sealed & Lubricated for Longevity: The sealed design with factory-applied lubrication effectively excludes contaminants and retains grease, ensuring consistent performance and an extended service life without the need for re-lubrication.
S71915 CD/P4A Bearing Typical Application Areas
The S71915 CD/P4A is ideally suited for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles (e.g., CNC milling, grinding, and high-speed machining centers)
- Precision Rotary Systems
- High-Frequency Motors
- Medical and Laboratory Equipment
- Aerospace Instrumentation
