7020 CEGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7020 CEGB/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
12.7 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
10102 lbf
Radial static load rating
9000 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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 CEGB/P4A Bearing Product Overview & Core Advantages
The 7020 CEGB/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional rotational accuracy. Positioned in the P4A tolerance class, it guarantees minimal dimensional and running deviations. Its primary advantage lies in its ability to support combined loads—handling significant radial loads alongside thrust loads in one direction—making it ideal for high-speed, high-rigidity applications. The bearing features a light preload (Class B) for reduced noise and vibration, contributing to superior operational smoothness.
7020 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7020 CEGB/P4A provides detailed technical specifications:
- 7020: Basic bearing series, indicating a 100 mm bore and 150 mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed performance and thrust load capacity.
- E: Indicates an optimized internal design, typically featuring a larger ball complement and reinforced raceways for increased load rating.
- GB: Specifies a Light Preload (Class B), which minimizes axial play and enhances system rigidity.
- P4A: Identifies the tolerance class, signifying precision levels superior to ABEC 7, with tight controls on bore, OD, width, and runout tolerances.
7020 CEGB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A standards, this bearing ensures minimal runout and high positional accuracy. The light preload eliminates internal clearance, providing immediate system stiffness and reducing deflection under load.
- Superior Load Capacity: The optimized internal geometry (E-design) with a 15° contact angle and 27 high-grade chrome steel balls enables a high dynamic load rating of 10,102 lbf, suitable for demanding combined load conditions.
- High-Speed Capability: The lightweight phenolic resin cage ensures stability and low friction at high rotational speeds, supporting a limiting speed of 20,000 rpm. This makes it an excellent high-speed bearing.
- Universal Matching: Designated as Universal Matchable (SU), these bearings can be universally paired in any combination to form matched sets (typically sets of 4) for preloaded duplex arrangements, simplifying inventory and assembly.
7020 CEGB/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Gearboxes and High-Frequency Motors.
- Medical Equipment such as dental handpieces and imaging scanner rotors.
- Aerospace & Defense Systems including gyroscopes and navigation instruments.
