S71908 CE/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71908 CE/P4A Bearing Product Overview & Core Advantages
The S71908 CE/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single-row bearing, it is engineered to accommodate combined loads, primarily handling high axial loads in one direction while also supporting significant radial loads. Its key advantages stem from its P4 (ABEC-7) tolerance class, ensuring ultra-precise running accuracy, and the availability of preload options for enhanced system stiffness and rotational precision. This makes it an ideal choice for high-speed spindles and other high-reliability applications where performance is critical.
S71908 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S71908 CE/P4A provides specific technical information:
- S: Denotes a bearing from a specific high-precision series.
- 7: Indicates an angular contact ball bearing design.
- 1908: Specifies the size series; 19 for the medium series and 08 for a 40 mm bore diameter.
- CE: Signifies a contact angle of 15°, optimized for high-speed performance and axial load capacity.
- P4A: Defines the tolerance class P4 (ABEC-7) with specific internal design and accuracy requirements for precision applications.
S71908 CE/P4A Bearing Structural Features & Performance Benefits
The S71908 CE/P4A's construction delivers distinct performance benefits:
- High-Speed Capability: The phenolic resin cage is lightweight and robust, contributing to lower inertia and higher limiting speeds (32,000 rpm). The optimized 15° contact angle further enhances high-speed stability.
- Superior Rigidity and Precision: Manufactured to P4 precision class with available preload, this bearing provides high running accuracy and system stiffness, minimizing deflection under load.
- High Load Capacity: The design efficiently handles combined loads, with a dynamic load rating of 2194 lbf and a static load rating of 1350 lbf, making it suitable for demanding operational conditions.
- Ready-to-Install and Sealed: The bearing comes pre-lubricated and sealed, protecting against contamination and simplifying installation for immediate use within its specified temperature range.
S71908 CE/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery, including:
- Machine Tool Spindles
- High-Speed Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- High-Frequency Spindles
