71902 CDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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71902 CDGC/P4A Bearing Product Overview & Core Advantages
The 71902 CDGC/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4A super-precision tolerance class, this bearing excels at accommodating combined radial and axial loads in one direction. Its compact design, featuring a 15 mm bore and 7 mm width, makes it ideal for space-constrained, high-speed spindles and precision instruments where minimal runout and high system rigidity are critical.
71902 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Optimized contact angle (15°) and internal geometry for high-speed operation and universal matching capability. |
| GC | Indicates a specific internal clearance and preload group (Moderate / Class C) for optimal preload in universal matched sets. |
| P4A | Denotes a super-precision tolerance class with enhanced dimensional and running accuracy for demanding applications. |
71902 CDGC/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A super-precision standards with tight bore, outer diameter, and width tolerances, ensuring minimal vibration and superior system stability. The 15° contact angle provides an optimal balance between radial and axial load capacity.
High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and enables a high limiting speed of 230,000 rpm. The open design facilitates efficient lubrication and cooling.
Universal Matching & Preload: Designated as Universal Matchable (SU), these bearings can be supplied in precisely matched pairs (set of 2) with a defined preload (Moderate / Class C). This eliminates internal clearance, increases stiffness, and simplifies installation in spindle arrangements.
Durable Material Construction: Manufactured from high-grade chrome steel for rings and balls, ensuring high fatigue life and wear resistance under demanding operating conditions.
71902 CDGC/P4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Handpiece Drives
- Aerospace Gyroscopes and Instrumentation
- High-Precision Robotic Drives
