71911 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71911 CE/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.29 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
80 mm
Outside diameter tolerance
-0.004mm to 0
Width
26 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5648 lbf
Radial static load rating
4770 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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:
$ 397.54
/ each
In Stock
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71911 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 71911 CE/HCP4ADBA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. This duplex back-to-back (DB) matched set features an extra light preload (Class A), ensuring minimal friction and optimal running accuracy. Its construction with ceramic balls and a phenolic cage enables superior performance under high-speed conditions while managing combined loads effectively. This bearing is pre-lubricated and operates within a wide temperature range, making it ideal for high-reliability, precision machinery.
71911 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Contact angle of 15° |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 |
| DB | Duplex Back-to-Back mounting arrangement |
| A | Extra light preload |
71911 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage significantly increases the limiting speed to 34,000 rpm, reducing friction and heat generation.
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement provides high moment rigidity and can support combined radial and axial loads from both directions, ensuring stable shaft positioning.
- Precision Performance: Manufactured to a P4A tolerance class with an extra light preload, this bearing delivers exceptional running accuracy and low noise levels, which is critical for precision applications.
- Optimized for Demanding Conditions: The hybrid ceramic design offers improved durability and can perform reliably within a temperature range of -30°C to 110°C.
71911 CE/HCP4ADBA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- Aerospace Control Systems
- Advanced Robotics and Automation
