71916 ACE/HCP4ALDT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71916 ACE/HCP4ALDT
Basic Information
System of measurement
Metric
Weight
0.62 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7898 lbf
Radial static load rating
7538 lbf
Limiting speed
17 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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71916 ACE/HCP4ALDT Bearing Product Overview & Core Advantages
The 71916 ACE/HCP4ALDT is a metric system, precision angular contact ball bearing designed for demanding applications requiring exceptional performance. Its defining feature is its Duplex Tandem (DT) arrangement, where two preloaded bearings are factory-matched to handle high axial loads in one direction with maximum rigidity. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy. The combination of a phenolic cage and ceramic balls enables outstanding high-speed capabilities, making it an ideal solution for high-precision, high-reliability spindles and machinery.
71916 ACE/HCP4ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACE | 25° Contact Angle, High Precision | Optimized for high axial load capacity and rigidity. |
| HC | Hybrid Ceramic (Ceramic Balls) | Reduced friction, higher speed, and longer service life. |
| P4A | Tolerance Class (Super Precision) | Guarantees extreme running accuracy and minimal vibration. |
| L | Light Preload | Eliminates internal clearance for maximum system stiffness. |
| DT | Duplex Tandem Arrangement | Two bearings matched to act as a single unit for very high unidirectional axial load capacity. |
71916 ACE/HCP4ALDT Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The Duplex Tandem (DT) arrangement and applied preload create an extremely rigid bearing system capable of withstanding very high unidirectional axial loads and moment loads, ensuring precise shaft positioning under demanding conditions.
- Superior High-Speed Performance: The lightweight phenolic cage and low-density, hard ceramic (Si3N4) balls significantly reduce centrifugal forces, enabling the bearing to achieve a high limiting speed of 17,000 rpm. This hybrid ceramic design also minimizes heat generation.
- High Precision and Long Life: Manufactured to P4A tolerance class with a 25° contact angle, this bearing ensures ultra-smooth operation with minimal runout. The chrome steel rings and ceramic balls offer excellent wear resistance and durability, extending service intervals.
- Optimized for Precision Lubrication: The open seal design allows for customized lubrication schemes to match specific application needs, maximizing performance and efficiency in controlled environments.
71916 ACE/HCP4ALDT Bearing Typical Application Areas
This high-precision, high-speed bearing is engineered for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
