71912 CEGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71912 CEGA/HCP4AL
Basic Information
System of measurement
Metric
Weight
0.16 kg
Tolerance class
P4A
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/HCP4AL Bearing Product Overview & Core Advantages
The 71912 CEGA/HCP4AL is a single row angular contact ball bearing engineered for ultra-high precision applications. Positioned in the P4A super-precision tolerance class, it delivers exceptional running accuracy and rotational stability. A key advantage is its universal matchable (SU) design, allowing two bearings to be mounted in a tandem, back-to-back, or face-to-face arrangement to achieve the required rigidity and load capacity. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and reduced rotational mass.
71912 CEGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CEGA | Indicates enhanced internal design and specific contact angle optimization for high-speed operation. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), which reduce friction, heat generation, and wear. |
| P4A | Denotes a super-precision tolerance class with very tight dimensional and running accuracy limits. |
| Open | The bearing is supplied without seals or shields, optimized for high-speed applications where minimal friction is critical. |
71912 CEGA/HCP4AL Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of ceramic balls and a lightweight phenolic cage significantly lowers centrifugal forces and operating temperatures, enabling a high limiting speed of 31,000 rpm.
- Rigidity & Precision: The 15° contact angle and P4A tolerance class provide high axial rigidity and exceptional running accuracy, essential for precise spindle positioning.
- Universal Matching (SU): This feature allows for precise preloading when two bearings are paired, enabling engineers to tailor the assembly's stiffness and load-carrying capacity for specific application needs.
- Extra Light Preload (Class A): The bearing is supplied with a minimal preload, minimizing starting and running torque while ensuring smooth operation at ultra-high speeds.
71912 CEGA/HCP4AL Bearing Typical Application Areas
This bearing is ideally suited for demanding, high-speed precision equipment, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Aerospace & Defense Systems (Gyroscopes, navigation systems)
- Semiconductor Manufacturing Equipment
