S71913 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71913 CB/P4A Bearing Product Overview & Core Advantages
The S71913 CB/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. This metric series bearing features a P4 (ABEC-7) tolerance class, ensuring minimal runout and superior performance in demanding environments. Its key advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, making it an ideal choice for high-speed spindles and precision machinery where high rigidity and operational reliability are paramount. The preloaded design and phenolic cage contribute to its stable performance at high rotational speeds.
S71913 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Designates a series of high-precision angular contact ball bearings. |
| 1913 | Indicates the bearing size: 65mm bore, 90mm OD, 13mm width. |
| CB | Specifies a contact angle of 15° and a specific internal clearance for a universal matched arrangement (can be paired in various configurations). |
| P4A | Denotes a very high precision tolerance class (P4/ABEC-7) with specific accuracy requirements for the bore and outside diameter. |
S71913 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The optimized 15° contact angle and single-row design provide excellent resistance to combined loads, offering high axial and radial stiffness for stable operation.
- High-Speed Performance: The lightweight phenolic resin cage ensures low inertia and excellent guidance, enabling smooth operation at the high limiting speed of 20,000 rpm. The bearing is pre-lubricated for immediate use.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing guarantees minimal vibration and high running accuracy, which is critical for applications like machine tool spindles.
- Durability and Reliability: Constructed from chrome steel for both rings and balls, the bearing offers high fatigue resistance and long service life under demanding conditions.
S71913 CB/P4A Bearing Typical Application Areas
The S71913 CB/P4A is ideally suited for high-performance machinery and systems, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instruments and Measuring Equipment
- High-Frequency Motors and Spindle Drives
- Medical Equipment (e.g., Dental handpieces)
- Aerospace Actuation Systems
