71916 ACE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71916 ACE/HCP4ADT
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/HCP4ADT Bearing Product Overview & Core Advantages
The 71916 ACE/HCP4ADT is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) arrangement bearing set is preloaded and manufactured to P4A tolerance class, ensuring ultra-high running accuracy and system rigidity. Its key advantage lies in its ability to handle high combined loads, particularly substantial axial loads in one direction, making it ideal for high-speed spindles and precision machinery where maximum stiffness and rotational precision are critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71916 | Bearing series and size designation (80mm bore, 110mm OD). |
| ACE | 25° contact angle, enhanced internal design for high stiffness and speed. |
| HC | Hybrid Ceramic: Features ceramic balls for reduced friction, higher speed capability, and longer service life. |
| P4A | Ultra-high precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DT | Duplex Tandem arrangement. Two bearings are matched and preloaded to share axial loads in the same direction, maximizing axial rigidity. |
71916 ACE/HCP4ADT Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds (17,000 rpm). This construction also offers superior resistance to wear and electrical arcing.
- Phenolic Resin Cage: The lightweight and robust phenolic cage provides excellent dimensional stability and low friction at high speeds, contributing to smooth operation and extended service life.
- Duplex Tandem Preload: The DT arrangement provides a high degree of system rigidity and precise rotational accuracy by eliminating axial play. This is essential for applications sensitive to deflection under load.
- High Load Capacity: With a 25° contact angle and tandem configuration, this bearing set is engineered to support high axial loads in one direction while also accommodating significant radial loads.
- Precision & Reliability: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for achieving high levels of machining quality and operational consistency.
71916 ACE/HCP4ADT Bearing Typical Application Areas
This high-performance bearing is specifically designed for the most demanding applications, including:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling spindles.
- Precision Rotary Systems: High-frequency spindles for PCB drilling and precision engraving.
- High-Speed Motors: Motors and spindles in aerospace and semiconductor manufacturing equipment.
- Turbochargers & Compressors: Applications requiring high-speed rotation and reliability.
