S71911 CDTP/P4B
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71911 CDTP/P4B
Basic Information
System of measurement
Metric
Weight
0.18 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
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4388 lbf
Radial static load rating
3285 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
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 CDTP/P4B Bearing Product Overview & Core Advantages
The S71911 CDTP/P4B is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, this bearing is preloaded and sealed, making it ideal for high-speed spindles and other precision machinery. Its key advantage lies in its ability to handle combined loads—simultaneously supporting significant radial and axial forces. The phenolic cage and factory-applied lubrication contribute to its high-speed capabilities and reliable, long-term performance.
S71911 CDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 71911 | Basic Bearing Series | High-precision angular contact bearing with a 55mm bore, 80mm OD, and 13mm width. |
| C | 15° Contact Angle | Optimized for high-speed operation and moderate axial load capacity. |
| D | Preload | Bearings are supplied with a preload to increase system rigidity and minimize axial/radial runout. |
| T | Phenolic (Textile) Cage | Lightweight cage material ideal for high-speed applications, offering good strength and guidance. |
| P | Enhanced Dimensional Stability | Indicates special treatment for dimensional stability under varying temperature conditions. |
| P4B | Tolerance Class | Corresponds to ABEC-7, a high-precision grade with extremely tight dimensional and running accuracy tolerances. |
S71911 CDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The combination of a 15° contact angle and factory-applied preload (D) ensures high system stiffness, critical for minimizing deflection under load in precision applications. The P4B tolerance class guarantees exceptional running accuracy.
- Superior Load Capacity: Designed to accommodate combined radial and axial loads simultaneously. With a dynamic load rating of 4388 lbf and a static load rating of 3285 lbf, it offers robust performance in demanding conditions.
- Optimized High-Speed Performance: The lightweight phenolic cage (T) reduces centrifugal forces, while the 15° contact angle and effective internal geometry contribute to a high limiting speed of 16,000 rpm.
- Sealed & Lubricated for Life: As a sealed bearing, it is protected from contamination. It comes pre-lubricated, making it a maintenance-free solution suitable for its entire operational temperature range (-30°C to 110°C).
S71911 CDTP/P4B Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Systems: Encoders, high-speed motors, and robotics.
- Medical & Dental Equipment: High-speed handpieces and scanners.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and instrumentation.
