7038 CD/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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7038 CD/P4ADGA Bearing Product Overview & Core Advantages
The 7038 CD/P4ADGA is a **precision angular contact ball bearing** designed for applications requiring exceptional rotational accuracy and rigidity. Manufactured to **P4A tolerance class**, this bearing delivers superior dimensional stability and running precision. Its **universal matchable (SU)** design allows for flexible mounting configurations while maintaining optimal performance. With a **15° contact angle**, it efficiently handles combined radial and axial loads, making it ideal for high-speed, high-precision machinery where **rigidity** and **load capacity** are critical.
7038 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | **15° contact angle** and universal matchable design for optimized load distribution |
| P4A | **High-precision tolerance class** with enhanced dimensional and running accuracy |
| DGA | **Extra light preload (Class A)** for minimal friction and optimal high-speed performance |
7038 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The **double-row angular contact design** provides superior radial and axial stiffness, capable of handling **combined loads** with a dynamic load rating of 90,675 lbf and static load rating of 137,250 lbf.
Precision Performance: Manufactured to **P4A tolerance standards** with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The **phenolic cage** and optimized **15° contact angle** enable stable operation at limiting speeds up to 11,000 rpm, making it suitable for **high-speed applications**.
Universal Matching: The **SU (Universal Matchable)** design allows bearings to be mounted in various configurations (back-to-back, face-to-face, or tandem) without performance degradation.
7038 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional rigidity and accuracy
- Precision Gearboxes: Industrial transmission systems demanding high-speed capability and load capacity
- High-Speed Motors: Electric motors and generators operating at elevated speeds
- Aerospace Components: Critical rotating assemblies in aircraft systems
- Medical Equipment: High-precision medical imaging and diagnostic machinery
