7020 CDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 CDGA/P4A
Basic Information
System of measurement
Metric
Weight
1.26 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
18720 lbf
Radial static load rating
19125 lbf
Limiting speed
20 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
Price:
$ 242.71
/ each
In Stock
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7020 CDGA/P4A Bearing Product Overview & Core Advantages
The 7020 CDGA/P4A is a single row angular contact ball bearing engineered for applications demanding ultra-high precision and superior running accuracy. Operating under the stringent P4A tolerance class, this bearing is designed to handle combined loads, offering exceptional performance in high-speed and high-rigidity scenarios. Its extra light preload (Class A) minimizes deflection and ensures smooth, quiet operation, making it an ideal choice for precision spindles and other critical machinery components.
7020 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial loads. |
| DGA | Indicates the bearing is part of a Universal Matchable (SU) set. Two bearings with this suffix can be mounted in a face-to-face (DF), back-to-back (DB), or tandem (DT) arrangement to achieve the required rigidity and load capacity. |
| P4A | Denotes an ultra-precision tolerance class with even tighter controls on runout and dimensional accuracy than standard P4, ensuring superior rotational performance. |
7020 CDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with an extra light preload, this bearing provides maximum shaft positioning accuracy and minimizes system deflection under load.
- Superior High-Speed Capability: The 15° contact angle and phenolic resin cage work in tandem to reduce friction and centrifugal forces, enabling a high limiting speed of 20,000 rpm.
- Optimized Load Capacity: The robust chrome steel construction and precision-ground ball diameter of 15.875 mm enable it to sustain significant combined radial and axial loads.
- Universal Matching Design: The DGA suffix allows for flexible mounting in matched sets, providing engineers with the versatility to configure bearing arrangements for optimal system stiffness and load distribution.
7020 CDGA/P4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles for CNC milling and grinding machines
- High-Frequency Motors and Precision Gearboxes
- Aerospace Positioning Systems and Robotic Arms
- Medical Imaging Equipment and Laboratory Instruments
