S7020 CEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7020 CEGA/P4A
Basic Information
System of measurement
Metric
Weight
1.32 kg
Tolerance class
P4A
Seal type
Sealed
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
10 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
4
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
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In Stock
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S7020 CEGA/P4A Bearing Product Overview & Core Advantages
The S7020 CEGA/P4A is a super-precision angular contact ball bearing engineered for the most demanding high-speed and high-rigidity applications. As a single bearing with a 15° contact angle and Extra Light (Class A) preload, it is designed to support combined loads, accommodating significant radial loads and axial loads in one direction. Its defining characteristics include exceptional running accuracy, guaranteed by the P4A tolerance class, and superior high-speed performance enabled by its phenolic cage and optimized internal geometry. This bearing is a fundamental component for systems requiring uncompromising precision, rigidity, and rotational stability.
S7020 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Suffix | Technical Meaning | Advantage |
|---|---|---|
| CEGA | This suffix combination indicates specific internal design features, including the phenolic cage and enhanced internal geometry optimized for high-speed operation and universal matching. | Delivers superior high-speed performance, reduced friction, and the ability to be universally matched with other bearings of the same code for precise preload configurations. |
| P4A | Denotes the tolerance class, which is a super-precision grade stricter than ABEC 7 (P4). The 'A' suffix often relates to specific runout tolerances. | Ensures extremely tight dimensional and running accuracy, leading to minimal vibration, enhanced positional stability, and extended service life in precision machinery. |
S7020 CEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A super-precision standards with exceptionally tight bore, outside diameter, and width tolerances. This, combined with the Extra Light preload, provides maximum shaft support rigidity and minimizes deflection under load, which is critical for maintaining accuracy.
- Superior High-Speed Capability: The lightweight, high-strength phenolic cage is instrumental in achieving the high limiting speed. It offers excellent dimensional stability and low friction at high rotational velocities.
- Optimized Load Capacity: The 15° contact angle is ideal for applications where high radial loads are predominant but significant axial loads in one direction are also present. The bearing's dynamic and static load ratings are engineered for long-term reliability under demanding conditions.
- Universal Matchable Design (SU): As a Universal Matchable bearing, the S7020 CEGA/P4A can be universally paired with other bearings of the same designation in various arrangements (back-to-back, face-to-face, tandem) to create a matched set that meets specific application requirements for preload and stiffness.
S7020 CEGA/P4A Bearing Typical Application Areas
This super-precision angular contact ball bearing is indispensable in high-performance machinery where speed, accuracy, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Robotic Drives: In robot arm joints and high-accuracy rotary actuators.
- High-Speed Compressors & Pumps: Where reliable operation at high rotational speeds is required.
- Medical Equipment: In high-speed dental handpieces and imaging device rotors.
- Aerospace & Defense Systems: For gyroscopes, radar systems, and other critical rotating assemblies.
