S71911 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71911 CE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.15 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
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
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
21
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3510 lbf
Radial static load rating
2385 lbf
Limiting speed
28 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:
$ 575.01
/ each
In Stock
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S71911 CE/HCP4A Bearing Product Overview & Core Advantages
The S71911 CE/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to a P4 (ABEC-7) tolerance class, it offers superior running accuracy. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling radial and axial forces—making it an ideal, compact solution for high-speed spindles and precision machinery where high rigidity and reliability are paramount. The combination of a ceramic ball material and a phenolic cage contributes to its outstanding high-speed capabilities.
S71911 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S71911 | Denotes the bearing series and basic dimensions (55mm bore, 80mm OD, 13mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed operation. |
| E | Indicates an optimized internal design for enhanced performance. |
| HC | Signifies the use of hybrid ceramic balls (Silicon Nitride), which reduce friction and heat generation. |
| P4A | Confirms the P4 (ABEC-7) tolerance class, ensuring ultra-precise dimensions and runout. |
S71911 CE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and 15° contact angle provide excellent resistance to combined radial and axial loads, ensuring stable operation under demanding conditions.
- Superior High-Speed Performance: The combination of ceramic balls and a lightweight phenolic resin cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 28,000 rpm. This design minimizes heat buildup and energy loss.
- Precision and Longevity: Manufactured to P4 tolerance with a sealed design, this bearing guarantees smooth, quiet, and vibration-free operation, extending service life in precision applications.
- Pre-Lubricated and Sealed: The bearing comes lubricated and sealed, protecting against contamination and providing reliable performance within its specified temperature range of -30°C to 110°C.
S71911 CE/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Robotics and Automation Equipment
- High-Frequency Motors and Spindle Drives
- Medical and Dental Equipment
- Aerospace Instrumentation and Guidance Systems
