S71917 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71917 CB/P4A
Basic Information
System of measurement
Metric
Weight
0.59 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.008mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.747 mm
Ball quantity
37
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3668 lbf
Radial static load rating
3668 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:
$ 1190.54
/ each
In Stock
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S71917 CB/P4A Bearing Product Overview & Core Advantages
The S71917 CB/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior running accuracy. As a P4 (ABEC-7) tolerance class bearing, it delivers exceptional dimensional stability and rotational precision. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction—making it ideal for high-speed, high-rigidity applications. The bearing comes preloaded and lubricated from the factory, ensuring immediate performance and simplifying installation.
S71917 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S71917 | Basic bearing designation. "S" prefix often indicates a super-precision bearing series. |
| CB | Specifies a specific contact angle (15°) and a moderate preload. This combination optimizes the bearing for high rigidity and controlled axial play. |
| P4A | Denotes the tolerance class P4 (ABEC-7). The "A" suffix may indicate specific accuracy enhancements or special manufacturing standards. |
S71917 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to a P4 precision class with a 15° contact angle, this bearing provides excellent rotational accuracy and stiffness, minimizing deflection under load.
- Optimized Load Capacity: The angular contact design is engineered to support combined radial and axial loads efficiently. The preload ensures precise shaft positioning and enhances system rigidity.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 15,000 rpm. This makes it suitable for demanding high-speed applications.
- Ready-to-Install & Sealed: The bearing is delivered as sealed and pre-lubricated, protecting against contamination and providing long-term, maintenance-free operation within its specified temperature range.
S71917 CB/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Frequency Spindles
- Precision Gearboxes
- High-Speed Pumps and Compressors
- Medical and Dental Equipment
- Robotic Arms and Precision Positioning Systems
