71912 ACE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71912 ACE/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.32 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
26 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5648 lbf
Radial static load rating
4950 lbf
Limiting speed
33 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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.
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71912 ACE/HCP4ADT Bearing Product Overview & Core Advantages
The 71912 ACE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional speed and rigidity. Operating as a matched duplex tandem (DT) pair, this bearing is preloaded and ready for installation, delivering superior performance in handling combined radial and axial loads. Its construction with a ceramic ball and phenolic cage enables outstanding high-speed capabilities and thermal stability, making it an ideal choice for high-precision, high-reliability machinery.
71912 ACE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | 25° contact angle, optimized for high axial load capacity. |
| HC | Hybrid Ceramic: Features ceramic balls for reduced friction and higher speed. |
| P4A | High precision tolerance class, ensuring minimal runout and superior rotational accuracy. |
| DT | Duplex Tandem arrangement. Two bearings are matched and preloaded to share loads axially in the same direction. |
71912 ACE/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem configuration and 25° contact angle provide exceptional stiffness, enabling the bearing to withstand significant combined loads and high axial loads in one direction.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a very high limiting speed of 33,000 rpm, minimizing heat generation and power loss.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, ensuring precise fit and smooth operation in critical applications.
- Pre-Lubricated & Ready-to-Use: Comes lubricated from the factory, simplifying installation and providing immediate operational readiness within its specified temperature range.
71912 ACE/HCP4ADT Bearing Typical Application Areas
This bearing is specifically engineered for high-performance systems, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring utmost precision and rigidity.
- High-Frequency Spindles: In PCB drilling and precision engraving machines.
- Precision Instrumentation: Used in advanced medical devices and optical positioning systems.
- Axial Compressors & Pumps: Where reliable handling of high axial thrust loads is critical.
