71917 CDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71917 CDGC/P4A Bearing Product Overview & Core Advantages
The 71917 CDGC/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and moderate preload. Engineered to a P4A tolerance class, this bearing delivers exceptional rotational accuracy and dimensional stability. Its 15° contact angle is optimized to handle significant combined loads (radial and axial), making it ideal for high-speed spindles and precision machinery. The phenolic cage and universal matching capability (Universal Matchable (SU)) further enhance its performance in demanding applications.
71917 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71917 | Basic bearing designation indicating size series and bore diameter (85mm) |
| CD | Contact angle designation (15°) |
| GC | Preload classification (Moderate / Class C) |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
71917 CDGC/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for superior positioning accuracy.
Optimized Load Capacity: The 15° contact angle enables efficient handling of combined radial and axial loads, with dynamic load rating of 10,395 lbf and static load rating of 10,800 lbf.
High-Speed Performance: The phenolic cage provides excellent dimensional stability at high speeds, supporting a limiting speed of 17,000 rpm while reducing friction and heat generation.
Universal Matching Capability: Designed as Universal Matchable (SU), these bearings can be mounted in sets of three to achieve optimal preload and stiffness without selective matching.
Premium Material Selection: Chrome steel rings and balls combined with phenolic cage material ensure durability, corrosion resistance, and stable operation across the temperature range of -30°C to 110°C.
71917 CDGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding machines
- Precision Instrumentation - Measuring equipment and optical systems requiring minimal runout
- High-Speed Motors - Servo motors and spindle drives demanding accurate rotation
- Aerospace Components - Guidance systems and aircraft instrumentation
- Medical Equipment - Dental handpieces and laboratory automation systems
