71912 CEGA/HCPA9A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71912 CEGA/HCPA9A
Basic Information
System of measurement
Metric
Weight
0.16 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.004mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3668 lbf
Radial static load rating
2655 lbf
Limiting speed
31 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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71912 CEGA/HCPA9A Bearing Product Overview & Core Advantages
The 71912 CEGA/HCPA9A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. Designed as a single bearing with a Universal Matchable (SU) designation, it enables precise axial preload control when mounted in pairs. Its core advantages include superior high-speed capability with a limiting speed of 31,000 rpm, enabled by a lightweight phenolic cage and ceramic balls. The bearing is pre-lubricated and features an open design for application-specific lubrication management, making it ideal for high-rigidity and high-reliability systems.
71912 CEGA/HCPA9A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Enhanced internal design with a 15° contact angle and optimized internal geometry. |
| GA | Indicates a specific cage design and guidance system. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls for reduced weight, lower friction, and higher speed capability. |
| PA9A | Denotes an extra light preload (Class A) and a high-precision tolerance class (P9A), ensuring minimal runout and exceptional rotational accuracy. |
71912 CEGA/HCPA9A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially in high-speed applications.
- Precision & Rigidity: Manufactured to PA9A tolerance class with an extra light preload, this bearing provides high system rigidity, precise shaft positioning, and minimal deflection under load.
- Optimized Cage Design: The lightweight phenolic cage offers excellent strength and guidance at high rotational speeds, contributing to the bearing's impressive 31,000 rpm limiting speed.
- Superior Load Capacity: With a dynamic load rating of 3668 lbf and a static load rating of 2655 lbf, it is capable of handling significant combined loads (radial and axial).
- Universal Matching: The Universal Matchable (SU) feature allows any two bearings to be mounted together as a pre-loaded set without selective matching, simplifying installation and inventory.
71912 CEGA/HCPA9A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace Actuators and Control Systems
- Medical and Dental Handpiece Drives
- Semiconductor Manufacturing Equipment
