7038 ACD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7038 ACD/P4A
Basic Information
System of measurement
Metric
Weight
9.51 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
190 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
290 mm
Outside diameter tolerance
-0.013mm to 0
Width
46 mm
Width tolerance
-0.24mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
30.162 mm
Ball quantity
22
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
52650 lbf
Radial static load rating
65250 lbf
Limiting speed
6.3 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 3807.47
/ each
In Stock
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7038 ACD/P4A Bearing Product Overview & Core Advantages
The 7038 ACD/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to simultaneously handle combined radial and axial loads in one direction, this bearing features a 25° contact angle and is supplied with a preload for enhanced system stiffness and precise shaft positioning. Manufactured to P4 (ABEC-7) tolerance class, it is an ideal solution for high-speed, high-rigidity machinery requiring superior performance and reliability.
7038 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific running accuracy requirements. |
7038 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design with an applied preload minimizes axial and radial play, providing superior system stiffness and precise rotational accuracy for demanding applications.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently support significant combined loads, making it suitable for applications with high axial forces in one direction.
- High-Speed Capability: The lightweight and durable phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 6,300 rpm.
- Premium Material Construction: Manufactured from chrome steel for both rings and balls, this bearing offers high fatigue life and durability under heavy loads.
7038 ACD/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
