71911 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71911 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.14 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
80 mm
Outside diameter tolerance
-0.007mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
21
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3330 lbf
Radial static load rating
2250 lbf
Limiting speed
39 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:
$ 479.01
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71911 ACE/HCP4A Bearing Product Overview & Core Advantages
The 71911 ACE/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered with a 25° contact angle and ceramic balls, this bearing excels at handling combined radial and axial loads simultaneously. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and precision machinery where minimal runout and vibration are critical. The combination of a phenolic cage and optimized internal geometry contributes to its outstanding high-speed performance and operational stability.
71911 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| 71911 | Basic designation indicating bore diameter (55mm), outside diameter (80mm), and width (13mm). |
| ACE | Signifies a 25° contact angle and enhanced internal design for optimal load distribution and high-speed capability. |
| HC | Denotes Hybrid Ceramic construction, featuring ceramic balls for reduced friction, lower operating temperatures, and extended service life. |
| P4A | Indicates P4 (ABEC-7) precision tolerance and specific internal clearance for high-accuracy applications. |
71911 ACE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and 25° contact angle provide excellent resistance to combined loads, ensuring stable operation under demanding conditions. With a dynamic load rating of 3330 lbf, it offers reliable performance in high-stress environments.
- Superior High-Speed Performance: The phenolic resin cage offers low weight and excellent slippage characteristics, enabling a limiting speed of 39,000 rpm. The use of ceramic balls further reduces centrifugal forces and friction, critical for ultra-high-speed applications.
- Enhanced Precision & Longevity: Manufactured to P4 tolerance standards, this bearing guarantees minimal dimensional variation and superior running accuracy. The hybrid ceramic construction provides inherent electrical insulation, corrosion resistance, and significantly longer service life compared to all-steel bearings.
- Optimized for Precision Applications: The open design is pre-lubricated and ready for integration into systems with controlled, clean lubrication environments, maximizing performance in precision spindles and instruments.
71911 ACE/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Instrumentation: Measuring equipment, optical scanners, and coordinate measuring machines (CMM).
- High-Speed Motors & Drives: Servo motors, spindle drives, and turbo-molecular pumps.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical rotational mechanisms.
