7214 ACDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7214 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7214 ACDGB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and exceptional rotational accuracy. Operating under P4A tolerance class, this bearing is designed to handle primarily axial loads in one direction while accommodating combined radial and axial loads. Its universal matching (SU) capability allows for flexible mounting configurations in preloaded sets, making it ideal for high-rigidity applications. The phenolic cage and optimized 25° contact angle contribute to superior high-speed performance and smooth operation.
7214 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7214 | Basic bearing series with 70mm bore, 125mm OD, 24mm width |
| AC | Angular Contact design with 25° contact angle |
| DGB | Universal Matchable (SU) bearing for paired mounting |
| P4A | High Precision Tolerance Class for superior running accuracy |
7214 ACDGB/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The phenolic cage provides excellent strength-to-weight ratio, enabling stable operation at limiting speeds up to 28,000 rpm while reducing centrifugal forces.
Load Capacity Optimization: With a 25° contact angle and 16 precision balls (15.875mm diameter), the bearing delivers superior axial load capacity while maintaining excellent radial load performance (dynamic: 14,918 lbf, static: 12,375 lbf).
Universal Matching Design: The SU universal matching feature allows for flexible arrangement in preloaded sets (up to 4 bearings), providing customized stiffness and load distribution for specific application requirements.
Material Excellence: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance across the operating temperature range (-30°C to 110°C).
7214 ACDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional running accuracy
- High-Speed Machining Centers: Applications demanding both high rotational speeds and precise positioning
- Precision Instrumentation: Measuring equipment and laboratory instruments where minimal runout is critical
- Robotic Systems: Robot arm joints and precision positioning mechanisms
- Aerospace Components: Guidance systems and aircraft instrumentation requiring reliable high-speed operation
