71914 CEGA/HCPA9A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71914 CEGA/HCPA9A
Basic Information
System of measurement
Metric
Weight
0.27 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4972 lbf
Radial static load rating
3600 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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71914 CEGA/HCPA9A Bearing Product Overview & Core Advantages
The 71914 CEGA/HCPA9A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and speed. As a single bearing with Extra light preload (Class A), it delivers minimal friction and optimal running accuracy. Its defining capability lies in handling combined loads—simultaneously supporting significant radial loads and thrust loads in one direction. The combination of a phenolic cage and ceramic balls enables superior high-speed performance up to 28,000 rpm, while its universal matchable (SU) design allows for flexible arrangement in sets of three to achieve higher rigidity and load distribution.
71914 CEGA/HCPA9A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| CE | Enhanced internal design with a 15° contact angle and optimized internal geometry. |
| GA | Indicates the bearing is supplied lubricated with a specific grease. |
| H | Signifies the bearing is one of a matched set. |
| C | Denotes the specific internal clearance or preload group. |
| PA9A | Specifies the tolerance class, indicating very high precision with tight dimensional and running accuracy tolerances. |
71914 CEGA/HCPA9A Bearing Structural Features & Performance Benefits
- High-Speed & Low Friction: The lightweight phenolic resin cage and low-density ceramic (Si3N4) balls significantly reduce centrifugal forces and friction, enabling stable operation at the limiting speed of 28,000 rpm.
- Precision & Rigidity: Manufactured to PA9A tolerance class with an Extra light preload, this bearing provides high running accuracy, minimal deflection, and improved system rigidity.
- Superior Load Capacity: The 15° contact angle and robust construction provide a dynamic load rating of 4972 lbf and a static load rating of 3600 lbf, making it suitable for demanding combined load conditions.
- Thermal Stability & Longevity: Ceramic balls exhibit lower thermal expansion than steel and are electrically insulating, contributing to consistent performance across the temperature range of -30°C to 110°C.
- Matched Set Flexibility: The Universal Matchable (SU) designation allows three identical bearings to be mounted together in various configurations (e.g., back-to-back, face-to-face) to share loads and enhance system stability.
71914 CEGA/HCPA9A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery requiring high rotational accuracy and speed. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
