7038 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7038 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7038 ACDGA/P4A is a single-row angular contact ball bearing engineered for applications demanding extremely high precision and superior running accuracy. Manufactured to P4A tolerance class, this bearing is designed to accommodate high axial loads in one direction while simultaneously handling significant radial loads, thanks to its 25° contact angle. Its phenolic cage and universal matching (SU) capability enable optimal performance in high-speed spindle arrangements. The bearing comes prelubricated and is characterized by its extra light preload (Class A), making it ideal for machine tool spindles and other precision rotary systems requiring minimal deflection and maximum rigidity.
7038 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| 7038 | Basic bearing series designation |
| AC | Angular Contact design |
| DGA | Universal Matchable bearing (can be mounted in any combination) |
| P4A | Super precision tolerance class (exceeds ABEC 7/ISO P4) |
7038 ACDGA/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with extremely tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and dimensional stability at high speeds, contributing to the bearing's limiting speed of 11,000 rpm.
Optimized Load Capacity: With a 25° contact angle and 22 high-precision chrome steel balls of 30.162mm diameter, the bearing delivers superior axial load capacity while maintaining excellent radial load performance (dynamic: 52,650 lbf, static: 65,250 lbf).
Universal Matching Design: The SU universal matching feature allows bearings to be mounted in any combination without requiring specific mounting positions, simplifying installation in back-to-back (DB) or face-to-face (DF) arrangements.
Thermal Stability: The phenolic cage and prelubrication ensure consistent performance across the operating temperature range of -30°C to 110°C.
7038 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme accuracy and rigidity
- Precision Rotary Systems: High-speed machining centers and CNC equipment
- Industrial Pumps & Compressors: Applications demanding high-speed operation and axial load capacity
- Aerospace Components: Guidance systems and precision instrumentation requiring P4A tolerance levels
- Medical Equipment: High-speed dental handpieces and surgical tools
