71920 CEGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71920 CEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.77 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
140 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8775 lbf
Radial static load rating
7088 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
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:
$ 363.43
/ each
In Stock
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71920 CEGA/P4A Bearing Product Overview & Core Advantages
The 71920 CEGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this single bearing is part of a universally matchable (SU) set, allowing for precise preload control when paired. Its key advantages include superior running accuracy, the ability to handle combined radial and axial loads efficiently, and optimized performance for high-speed operation. The phenolic resin cage and chrome steel construction contribute to its durability and reliability in demanding industrial environments.
71920 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71920 | Basic bearing designation, indicating a metric angular contact ball bearing with a 100 mm bore, 140 mm OD, and 20 mm width. |
| C | Specifies a 15° contact angle, optimized for handling axial loads. |
| E | Indicates an optimized internal design for enhanced load capacity and performance. |
| GA | Denotes an Extra light preload (Class A). |
| P4A | Specifies the tolerance class, representing very high precision for bore diameter, outside diameter, and width. |
71920 CEGA/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with tight dimensional control, ensuring minimal runout and vibration for superior positional accuracy and system stiffness.
- Optimized Load Capacity: The 15° contact angle and robust internal geometry enable the bearing to effectively support combined loads (radial and axial).
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and contributes to a high limiting speed of 16,000 rpm.
- Universal Matching: As a Universal Matchable (SU) bearing, it can be paired with another identical bearing in various arrangements (back-to-back, face-to-face, or tandem) to achieve specific preload and rigidity requirements.
- Durable Construction: Made from high-grade chrome steel for rings and balls, providing excellent wear resistance and long service life.
71920 CEGA/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Robotic Arms and Automation Systems
