71817 CDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71817 CDGA/P4 Bearing Product Overview & Core Advantages
The 71817 CDGA/P4 is a single row angular contact ball bearing designed for applications demanding high precision and superior running accuracy. As a P4 tolerance class bearing, it offers extremely tight dimensional and running accuracy tolerances, making it ideal for high-speed spindles and precision machinery. Its 15° contact angle is optimized to support combined loads, effectively carrying significant axial loads in one direction alongside radial loads. The bearing is universally matchable (SU), allowing for flexible mounting in preloaded sets to achieve the required rigidity and performance.
71817 CDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71817 | Basic bearing designation, indicating the bore diameter (85 mm) and series. |
| C | Specifies a 15° contact angle. |
| DG | Indicates the bearing is universally matchable (SU) for mounting in any combination. |
| A | Denotes an extra light preload (Class A). |
| /P4 | Specifies the tolerance class, indicating very high precision levels. |
71817 CDGA/P4 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class standards, this bearing ensures minimal runout and vibration, contributing to exceptional system rigidity and positional accuracy. The extra light preload (A) eliminates internal clearance for precise shaft positioning.
- Optimized Load Capacity: The 15° contact angle is engineered to handle combined loads, providing excellent performance for applications with high axial loads in one direction.
- High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, enabling stable operation at the high limiting speed of 28,000 rpm. The open design facilitates efficient lubrication management.
- Universal Matching: The Universal Matchable (SU) feature allows these bearings to be mounted in sets of two, three, or four (as per specification) in any combination to achieve specific preload and stiffness requirements without selective assembly.
71817 CDGA/P4 Bearing Typical Application Areas
The 71817 CDGA/P4 is ideally suited for high-performance applications where precision and high speeds are critical. Key industries and equipment include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Aerospace Control Systems
- Medical and Dental Equipment
