71914 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71914 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.28 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.008mm 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° to 110 °C
Radial dynamic load rating
7312 lbf
Radial static load rating
7312 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 707.75
/ each
In Stock
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Product Overview and Core Advantages
The 71914 ACD/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. This single-row bearing features a 25° contact angle and is supplied with a preload, ensuring high system rigidity and minimal axial/radial runout. Its construction with a phenolic cage and ceramic balls significantly reduces centrifugal forces, enabling superior high-speed capabilities up to 22,000 rpm. This bearing is engineered to handle combined loads, with a pronounced capacity for thrust loads, making it ideal for high-precision, high-rigidity applications.
71914 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71914 | Standard bearing series designation, indicating the bearing dimensions (70mm bore, 100mm OD, 16mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a high-precision design with optimized internal geometry. |
| HC | Hybrid Ceramic: Denotes the use of ceramic balls (typically Silicon Nitride, Si3N4) with steel rings. |
| P4 | Tolerance class P4 (ABEC-7), signifying extremely tight dimensional and running accuracy tolerances for superior performance. |
| A | Indicates the bearing is supplied with a light preload for enhanced rigidity. |
Structural Features and Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls reduces weight, minimizes friction, and provides electrical insulation. This construction is key to achieving the high limiting speed and extended service life, especially in high-speed and electrically sensitive environments.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction at high rotational speeds, contributing significantly to the bearing's overall high-speed performance and smooth operation.
- Precision and Preload: Manufactured to P4 (ABEC-7) tolerance class and supplied with a preload, this bearing delivers exceptional running accuracy, high system stiffness, and precise shaft positioning, which is critical for minimizing vibration and chatter.
- Optimized Load Capacity: The 25° contact angle is optimized to handle significant combined loads, providing an excellent balance between radial and thrust load capacity.
- Lubrication and Temperature: The bearing is pre-lubricated with a high-performance grease suitable for a wide temperature range of -30°C to 110°C, ensuring immediate startup and reliable operation.
71914 ACD/HCP4A Bearing Typical Application Areas
The 71914 ACD/HCP4A is engineered for the most demanding high-speed and high-precision machinery. Its primary applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision, rigidity, and speed are paramount.
- High-Frequency Spindles: PCB drilling and routing spindles that require extreme rotational accuracy and minimal runout.
- Precision Robotics: Arm joints and rotary actuators in advanced automation systems.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring high reliability and speed.
- High-Speed Motors and Turbomachinery: Applications where reduced centrifugal forces and low heat generation are critical.
