7020 CD/P4ATGA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 CD/P4ATGA
Basic Information
System of measurement
Metric
Weight
3.79 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
72 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
40050 lbf
Radial static load rating
57375 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
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
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7020 CD/P4ATGA Bearing Product Overview & Core Advantages
The 7020 CD/P4ATGA is a precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed capability. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, simplifying installation and optimizing performance. The bearing is pre-lubricated and features an open design, making it ideal for high-speed spindles and other precision machinery where high rigidity and reliability are paramount.
7020 CD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| CD | Indicates a 15° contact angle and is designed for universal matching (SU). This allows two bearings to be mounted in either a back-to-back (DB) or face-to-face (DF) arrangement to support combined loads. |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy specifications, suitable for the most demanding applications. |
| TGA | Specifies the phenolic (Textolite) cage material, which contributes to lower friction and higher limiting speeds, especially under oil lubrication. |
7020 CD/P4ATGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and universal matchable feature enable the bearing to support significant combined radial and axial loads. When mounted in pairs, the arrangement provides high system rigidity.
- Superior High-Speed Performance: The lightweight phenolic cage (TGA) reduces centrifugal forces, while the optimized internal geometry and 15° contact angle allow for a high limiting speed of 20,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter, outside diameter, and width, ensuring consistent, high-accuracy performance.
- Durable Construction: Components made from chrome steel for both rings and balls provide high fatigue life and durability under demanding operating conditions.
7020 CD/P4ATGA Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Aerospace Control Systems
- Medical and Laboratory Instrumentation
