7052 CD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7052 CD/P4A
Basic Information
System of measurement
Metric
Weight
25.6 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
260 mm
Bore diameter tolerance
-0.013mm to 0
Outside diameter
400 mm
Outside diameter tolerance
-0.015mm to 0
Width
65 mm
Width tolerance
-0.3mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
44.45 mm
Ball quantity
21
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
93600 lbf
Radial static load rating
141750 lbf
Limiting speed
5.3 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:
$ 6660.65
/ each
In Stock
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7052 CD/P4A Bearing Product Overview & Core Advantages
The 7052 CD/P4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing, it is optimized to support high combined loads, accommodating significant radial loads alongside thrust loads in one direction. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and other precision machinery. The bearing comes pre-lubricated and is designed with a 15° contact angle, providing an excellent balance between high-speed capability and axial load capacity.
7052 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7052 | Basic Bearing Series & Size Designation | Defines the core dimensions: 260mm bore, 400mm OD, 65mm width. |
| CD | Contact Angle & Internal Design | Indicates a 15° contact angle and optimized internal geometry for high rigidity and speed. |
| P4A | Tolerance Class | Specifies a P4 (ABEC-7) precision grade, ensuring extremely tight dimensional and running accuracy. |
7052 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class with a phenolic resin cage, this bearing provides exceptional dimensional stability and minimizes vibration, which is critical for high-precision applications.
- Superior Load Capacity: The 15° contact angle and robust construction, featuring chrome steel rings and balls, enable it to handle high radial dynamic load ratings of 93,600 lbf and static load ratings of 141,750 lbf.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 5,300 rpm. The open design facilitates efficient lubrication management for cooler operation.
- Preload & Matched Set Capability: The design allows for the application of preload, which increases system stiffness and further enhances rotational accuracy. While supplied as a single bearing, it can be mounted in specific arrangements (O, X) to achieve desired performance characteristics.
7052 CD/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for demanding applications where high speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Industrial and robotics transmissions.
- High-Frequency Motors and Spindles: Applications requiring minimal runout and high rotational stability.
- Medical and Laboratory Equipment: Centrifuges and high-speed scanners.
- Aerospace and Defense Systems: Gyroscopes, radar platforms, and other precision mechanisms.
