71940 CDGC/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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71940 CDGC/P4A Bearing Product Overview & Core Advantages
The 71940 CDGC/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior running accuracy. Manufactured to P4A tolerance class, this bearing delivers exceptional dimensional stability and rotational precision. Its 15° contact angle is optimized to support significant combined loads (radial and axial) simultaneously. The phenolic cage and universal matching (SU) capability make it ideal for preloaded arrangements in high-speed spindle applications, providing high rigidity and thermal stability.
71940 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71940 | Basic bearing designation with 200mm bore diameter |
| C | 15° contact angle design |
| DG | Universal matchable bearing (can be paired in any combination) |
| C | Moderate preload (Class C) |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
71940 CDGC/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: The P4A tolerance class ensures minimal runout and vibration, critical for high-speed applications up to 6,300 rpm. The phenolic cage provides excellent strength-to-weight ratio and operates effectively at high temperatures.
Load Capacity: With a dynamic load rating of 46,800 lbf and static load rating of 59,625 lbf, this bearing handles substantial combined loads efficiently. The 15° contact angle provides optimal balance between radial and axial load capacity.
Universal Matching Capability: As an SU universal matchable bearing, it can be paired in sets of three without selective assembly, simplifying installation and ensuring consistent preload in back-to-back or face-to-face arrangements.
Material Excellence: Manufactured from chrome steel for both rings and balls, providing superior hardness, wear resistance, and fatigue life. The open design allows for custom lubrication schemes tailored to specific application requirements.
71940 CDGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-precision milling, grinding, and turning centers
- High-Speed Machining Centers - Requiring P4A precision and thermal stability
- Precision Gearboxes - Industrial transmission systems
- Robotic Systems - High-accuracy rotary joints and manipulators
- Aerospace Components - Flight control systems and auxiliary power units
- Medical Equipment - CT scanners and high-speed dental handpieces
