71917 CEGA/P4A
71900 Series 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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71917 CEGA/P4A Bearing Product Overview & Core Advantages
The 71917 CEGA/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and rotational precision. Its 15° contact angle and phenolic cage construction make it ideally suited for handling combined loads—simultaneously supporting significant radial loads and axial loads in one direction. The bearing comes pre-lubricated and is universally matchable (SU), allowing for precise axial preload adjustment when mounted in pairs, making it an excellent choice for high-rigidity, high-speed spindle applications.
71917 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71917 | Basic bearing designation (85mm bore, 120mm OD, 18mm width) |
| CE | Enhanced internal design for improved performance |
| GA | Light preload (Class A) |
| P4A | High precision tolerance class (superior to ABEC 7) |
71917 CEGA/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The P4A tolerance class ensures minimal runout and vibration, while the optimized internal geometry provides exceptional stiffness for demanding applications.
Superior Load Capacity: With a 15° contact angle and robust construction featuring 23 precision balls, this bearing effectively handles combined radial and axial loads, offering a dynamic load rating of 6660 lbf and static load rating of 5130 lbf.
High-Speed Performance: The phenolic cage provides excellent strength-to-weight ratio and smooth operation at high speeds, supporting limiting speeds up to 17,000 rpm.
Thermal Stability: The phenolic cage material maintains dimensional stability across the operating temperature range of -30°C to 110°C, ensuring consistent performance.
Universal Matching Capability: As a universally matchable (SU) bearing, it can be paired with another identical bearing to create precisely preloaded sets for optimal stiffness and accuracy.
71917 CEGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers
- Precision Instrumentation: Measuring equipment and laboratory instruments
- High-Speed Motors: Spindle motors and high-frequency applications
- Robotics: Precision joints and rotary actuators
- Aerospace Components: Guidance systems and precision mechanisms
- Medical Equipment: Dental handpieces and surgical tools
