S71911 ACDTP/P4B
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71911 ACDTP/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
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4095 lbf
Radial static load rating
3082 lbf
Limiting speed
15 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:
$ 574.56
/ each
In Stock
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S71911 ACDTP/P4B Bearing Product Overview & Core Advantages
The S71911 ACDTP/P4B is a precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle and available preload, it is optimized to handle combined loads—simultaneously supporting significant radial and axial forces. Manufactured to a P4 (ABEC-7) tolerance class, it guarantees ultra-precise running accuracy, making it an ideal choice for high-speed spindles and other high-performance machinery where reliability and minimal runout are critical.
S71911 ACDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S | Designates an angular contact ball bearing. |
| 7 | Indicates a contact angle of 25°. |
| 1911 | Specifies the bearing dimensions: 55mm bore, 80mm outside diameter, 13mm width. |
| ACD | Refers to a specific internal design and optimized geometry for high performance. |
| TP | Denotes a Phenolic (synthetic resin) cage, which is lightweight and ideal for high-speed operation. |
| P4B | Specifies the tolerance class P4 (ABEC-7) and likely includes specific running accuracy requirements. |
S71911 ACDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 25° contact angle and the availability of preload provide superior axial and radial stiffness, ensuring precise shaft positioning and minimal deflection under load.
- Superior Load Capacity: Engineered to handle combined radial and axial loads efficiently. With a dynamic load rating of 4095 lbf and a static load rating of 3082 lbf, it offers reliable performance in demanding conditions.
- Optimized High-Speed Performance: The lightweight Phenolic cage (TP) reduces centrifugal forces, while the precision-ground chrome steel components and high-grade lubrication contribute to a high limiting speed of 15,000 rpm.
- Sealed & Lubricated for Longevity: As a sealed and pre-lubricated bearing, it is protected from contamination and is ready for immediate use, offering a long service life within its specified temperature range of -30°C to 110°C.
S71911 ACDTP/P4B Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Motors and Precision Gearboxes
- Medical Equipment and Dental Handpieces
- Aerospace Actuators and Robotic Drives
