7048 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7048 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
17.1 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
240 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
360 mm
Outside diameter tolerance
-0.004mm to 0
Width
56 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
38.1 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
73125 lbf
Radial static load rating
104625 lbf
Limiting speed
7.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7048 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7048 ACDGA/P4A is a single row angular contact ball bearing engineered for applications demanding exceptional precision and performance. Operating under the stringent P4A tolerance class, this bearing is designed to handle high-speed operations while supporting significant combined loads (radial and axial). Its extra light preload (Class A) minimizes deflection and ensures smooth, precise rotation, making it ideal for high-rigidity, high-reliability systems. The bearing is Universal Matchable (SU), allowing for precise preload configuration when mounted with other bearings from the same manufacturing lot.
7048 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7048 | Basic bearing series and size designation. |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Designates a specific internal geometry and extra light preload (Class A). |
| P4A | Indicates a high-precision tolerance class superior to ABEC 7, ensuring minimal runout and vibration. |
7048 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: Manufactured to P4A tolerance with an extra light preload, this bearing provides exceptional rotational accuracy and stiffness, critical for minimizing system deflection under load.
- Superior Load Capacity: The 25° contact angle and robust construction enable it to handle high combined radial and axial loads efficiently.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 7,500 rpm. The open design facilitates efficient lubrication management for thermal stability at high speeds.
- Premium Materials: Components made from chrome steel for rings and balls ensure high durability and fatigue resistance, suitable for a wide operating temperature range from -30°C to 110°C.
7048 ACDGA/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for demanding applications in:
- Machine Tool Spindles: Provides the necessary rigidity, speed, and accuracy for high-performance milling, grinding, and turning centers.
- High-Frequency Motors and Spindles: Its high-speed capability and precision make it a preferred choice for electric motors and spindles in advanced manufacturing.
- Precision Robotic Systems: Used in robotic arms and joints where high positional accuracy and repeatability are paramount.
- Aerospace and Defense Systems: Employed in gyroscopes, radar equipment, and other critical systems requiring reliable performance under extreme conditions.
