7020 ACB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7020 ACB/P4A
Basic Information
System of measurement
Metric
Weight
1.36 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
10.319 mm
Ball quantity
27
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6322 lbf
Radial static load rating
5738 lbf
Limiting speed
15 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:
$ 1158.98
/ each
In Stock
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7020 ACB/P4A Bearing Product Overview & Core Advantages
The 7020 ACB/P4A is a single-row angular contact ball bearing engineered for applications demanding exceptional precision and high-speed performance. Designed to accommodate combined loads—simultaneously handling significant radial loads and unidirectional axial loads—this bearing features a 25° contact angle for optimal thrust capacity. Manufactured to P4 (ABEC-7) tolerance class, it ensures superior running accuracy, making it ideal for high-precision spindles and machinery requiring minimal runout and vibration. Its phenolic resin cage contributes to smooth operation at high rotational speeds.
7020 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| ACB | Angular Contact Bearing, specific internal design and contact angle | Indicates a 25° contact angle, optimized for high axial load capacity and rigidity. |
| P4A | P4 (ABEC-7) Tolerance Class, High Precision | Denotes extremely tight dimensional and running accuracy tolerances for applications requiring high precision and smooth operation. |
7020 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single-row design with a 25° contact angle provides excellent rigidity and can support substantial combined (radial and axial) loads in one direction. The high dynamic and static load ratings (6322 lbf / 5738 lbf) ensure reliable performance under demanding conditions.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures lower centrifugal forces and reduced friction, enabling a high limiting speed of 15,000 rpm. This makes the bearing suitable for high-speed spindles and other rapid-rotation applications.
- Precision Engineering: Manufactured to P4 tolerance class with precise bore, outside diameter, and width tolerances, this bearing guarantees exceptional running accuracy, low noise, and minimal vibration, which is critical for precision machinery.
- Optimized Material Selection: The use of chrome steel for both rings and balls ensures high durability, wear resistance, and a long operational life. The open design allows for customized lubrication schemes to suit specific application needs.
7020 ACB/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-precision milling, grinding, and turning centers.
- High-Speed Motors and Spindles: Applications requiring rapid acceleration and deceleration.
- Precision Gearboxes and Robotic Drives.
- Medical Equipment and Dental Handpieces.
- Aerospace Actuation Systems and other high-performance industrial machinery.
