71919 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71919 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.5 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.009mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
10395 lbf
Radial static load rating
11700 lbf
Limiting speed
16 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:
$ 1200.09
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71919 ACD/HCP4A Bearing Product Overview & Core Advantages
The 71919 ACD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is designed to handle significant axial loads in one direction while supporting combined radial and axial loads. Its construction, featuring a phenolic cage and ceramic balls, enables exceptional high-speed performance and operational stability. The bearing is pre-lubricated and available with a preload, ensuring immediate readiness for high-rigidity applications requiring minimal deflection.
71919 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| ACD | Optimized 25° contact angle design | Enhanced axial load capacity and high-speed capability. |
| HC | Hybrid Ceramic construction (Ceramic balls, Steel rings) | Reduced friction, lower operating temperature, and extended service life at high speeds. |
| P4A | P4 (ABEC-7) tolerance class with specific running accuracy | Guarantees ultra-precise running accuracy and minimal vibration for critical applications. |
71919 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed & High-Rigidity Performance: The combination of a lightweight phenolic resin cage and low-density ceramic (Si3N4) balls significantly reduces centrifugal forces, enabling a high limiting speed of 16,000 rpm. The 25° contact angle and availability of preload provide high system rigidity, minimizing axial and radial deflection under load.
- Superior Load Capacity: Engineered to carry substantial axial loads in one direction and combined (radial and axial) loads. The high-grade chrome steel rings and precision-ground raceways contribute to its dynamic load rating of 10,395 lbf and static load rating of 11,700 lbf.
- Precision & Longevity: Manufactured to P4 tolerance class, this bearing ensures exceptional dimensional stability and running accuracy. The hybrid ceramic design offers superior wear resistance, electrical insulation, and the ability to operate with minimal lubrication over a wide temperature range (-30°C to 110°C).
71919 ACD/HCP4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Medical Equipment: Dental handpieces, laboratory centrifuges.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, auxiliary power units (APUs).
- High-Frequency Motors and Spindles: Electric motors for robotics, PCB drilling spindles.
