7011 CD/PA9ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 7011 CD/PA9ADGA is a precision angular contact ball bearing designed for applications requiring exceptional accuracy and reliability. As a universal matchable (SU) bearing with extra light preload (Class A), it delivers optimal performance in high-speed operations while maintaining precise rotational characteristics. Its 15° contact angle enables efficient handling of combined radial and axial loads, making it ideal for demanding applications where space constraints and high rigidity are critical factors.
7011 CD/PA9ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CD | 15° contact angle, universal matchable design | Enables optimal combined load capacity and flexible mounting arrangements |
| PA9A | Extra light preload (Class A), high precision tolerance | Provides minimal friction, excellent running accuracy, and superior high-speed performance |
| DGA | Pre-lubricated with specific grease | Ensures immediate operation readiness and extended service life |
Structural Features and Performance Benefits
High Precision Construction: Manufactured to PA9A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
Optimized Load Distribution: Features 18 precision chrome steel balls with 11.112mm diameter, arranged to efficiently handle radial dynamic load rating of 14,332 lbf and radial static load rating of 14,738 lbf.
High-Speed Capability: The phenolic cage and optimized internal geometry enable limiting speeds up to 34,000 rpm, making it suitable for high-rotation applications.
Thermal Stability: Operating temperature range from -30°C to 110°C ensures reliable performance across various environmental conditions.
Universal Matching Design: As part of a matched set of 2 bearings, provides flexibility in mounting configurations while maintaining precise preload characteristics.
7011 CD/PA9ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional running accuracy
- High-Speed Motors: Electric motors and spindle drives operating at elevated speeds
- Precision Instrumentation: Medical equipment, measuring devices, and laboratory instruments
- Robotics and Automation: Robot arm joints and precision positioning systems
- Aerospace Components: Guidance systems and auxiliary power units requiring reliable high-speed operation
