S71911 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71911 CEGA/HCP4A Bearing Product Overview & Core Advantages
The S71911 CEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This sealed bearing features a single, universal matchable design with an extra light preload (Class A), making it ideal for high-speed spindles and precision machinery. Its key advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high running accuracy, thanks to its P4A tolerance class and ceramic ball construction. The compact design, with a 55 mm bore and 13 mm width, offers a space-saving solution without compromising performance.
S71911 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: Denotes a high-precision bearing series.
- 1911: Standard designation for a bearing with a 55 mm bore and 80 mm outside diameter.
- CE: Signifies a 15° contact angle and specific internal design.
- GA: Indicates Universal Matchable (SU) pairing. Two bearings are supplied as a matched set for optimal performance.
- HC: Represents the cage material, Phenolic, which contributes to low weight and high-speed capability.
- P4A: Specifies the tolerance class, indicating very high dimensional and running accuracy.
S71911 CEGA/HCP4A Bearing Structural Features & Performance Benefits
High-Speed Performance & Rigidity: The combination of ceramic balls and a lightweight phenolic cage (HC) significantly reduces centrifugal forces, enabling a high limiting speed of 34,000 rpm. The 15° contact angle and optimized internal geometry provide high rigidity for precise shaft positioning.
Superior Load Capacity: Engineered to support combined radial and axial loads effectively. The radial dynamic load rating of 3510 lbf and static load rating of 2385 lbf ensure reliable operation under demanding conditions.
Precision & Longevity: Manufactured to P4A tolerance class for exceptional running accuracy and low noise/vibration. The sealed design with pre-applied grease lubrication protects against contamination and provides maintenance-free operation within a temperature range of -30°C to 110°C.
S71911 CEGA/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision, high speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Advanced Robotics and Automation Systems
