71917 CD/P4ATGA
71900 Series Super Precision Angular Contact Ball Bearings
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71917 CD/P4ATGA Bearing Product Overview & Core Advantages
The 71917 CD/P4ATGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing features a universal matchable (SU) design, allowing bearings to be mounted in any combination (face-to-face, back-to-back, or tandem) to achieve the required stiffness and preload. Its 15° contact angle and extra light preload (Class A) make it ideally suited for high-speed spindle applications where minimal heat generation and superior running accuracy are critical.
71917 CD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Optimized internal geometry for high-speed performance and controlled internal clearance |
| P4A | Super precision tolerance class with enhanced running accuracy requirements |
| T | Phenolic (textile laminate) cage |
| G | Preloaded bearing set |
| A | Extra light preload classification |
71917 CD/P4ATGA Bearing Structural Features & Performance Benefits
High-Speed Capability: The combination of a phenolic cage and optimized internal geometry (CD design) enables stable operation at limiting speeds up to 17,000 rpm, making it ideal for high-speed machining centers.
Exceptional Rigidity: The angular contact design with 25 precision balls provides superior resistance to combined loads, ensuring minimal deflection under operational stresses.
Precision Performance: Manufactured to P4A tolerance standards with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and positioning precision.
Universal Matching Capability: The SU designation allows flexible arrangement of multiple bearings (sets of 3) to optimize system stiffness and load distribution without special selection.
71917 CD/P4ATGA Bearing Typical Application Areas
- Machine Tool Spindles - High-speed milling, grinding, and turning centers
- Precision Rotary Tables - Indexing and positioning systems
- High-Frequency Motor Spindles - PCB drilling and precision machining
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Gyroscopes and navigation systems
