7038 CD/P4ADGB
7000 Series Super Precision Angular Contact Ball Bearings
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7038 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7038 CD/P4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with P4A tolerance class and light preload (Class B), this bearing delivers superior rotational precision and minimal runout. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs, enabling optimal performance under combined radial and axial loads. The phenolic cage and optimized 15° contact angle contribute to its high-speed capability and smooth operation.
7038 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Universal matchable bearing design with a 15° contact angle |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
| DGB | Duplex bearing set with light preload (Class B) |
7038 CD/P4ADGB Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0) ensures exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 15° contact angle and robust design provide excellent performance under combined loads, with dynamic load rating of 90,675 lbf and static load rating of 137,250 lbf.
High-Speed Performance: The phenolic cage and precision-ground chrome steel balls enable operation at limiting speeds up to 11,000 rpm while maintaining stability.
Thermal Stability: The phenolic cage material offers excellent dimensional stability across the operating temperature range of -30°C to 110°C.
Universal Matching Capability: The SU designation allows for flexible mounting in various configurations (DB, DF, DT) to suit specific application requirements.
7038 CD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding machines
- Precision Gearboxes - Industrial transmission systems requiring high accuracy
- Medical Equipment - CT scanners and high-speed medical imaging devices
- Aerospace Systems - Flight control mechanisms and auxiliary power units
- Robotics & Automation - High-accuracy robotic joints and positioning systems
- Test & Measurement Equipment - Coordinate measuring machines and optical instruments
