71914 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71914 ACDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.28 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 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
7312 lbf
Radial static load rating
7312 lbf
Limiting speed
29 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
Price:
$ 234.03
/ each
In Stock
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Product Overview and Core Advantages
The 71914 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This single bearing features an extra light preload (Class A) and is manufactured to P4A tolerance class, ensuring superior running accuracy and minimal vibration. Its 25° contact angle and ceramic ball construction enable it to handle high combined loads and achieve outstanding high-speed performance, making it ideal for ultra-precise, high-reliability machinery.
71914 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | High precision bearing design. |
| GA | Universal Matchable bearing, supplied in a matched set of 2 (SU designation). |
| HC | Hybrid Ceramic construction, featuring ceramic balls and a steel ring. |
| P4A | Super Precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
Structural Features and Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction, heat generation, and wear. This construction provides electrical insulation, lower centrifugal forces, and enables higher limiting speeds compared to all-steel bearings.
- High Rigidity and Load Capacity: The 25° contact angle is optimized to support significant combined radial and axial loads simultaneously. The extra light preload (Class A) ensures precise shaft positioning and enhanced system stiffness without excessive torque or heat build-up.
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic balls work in tandem to minimize centrifugal forces, allowing the bearing to operate reliably at its high limiting speed of 29,000 rpm.
- Precision and Longevity: Manufactured to a P4A tolerance class with tight dimensional control on the 70 mm bore and 100 mm outside diameter, this bearing guarantees smooth, quiet operation and extended service life in precision applications.
71914 ACDGA/HCP4A Bearing Typical Application Areas
The 71914 ACDGA/HCP4A is engineered for the most demanding high-speed and high-precision applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotics and Automation Arms
- High-Frequency Spindles for PCB drilling and routing
- Medical Equipment (Dental handpieces, surgical tools)
- Aerospace Instrumentation and Guidance Systems
- Turbocharger Shafts and other high-performance automotive systems
