S71902 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71902 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.016 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
28 mm
Outside diameter tolerance
-0.005mm to 0
Width
7 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
13
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
893 lbf
Radial static load rating
428 lbf
Limiting speed
60 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:
$ 159.49
/ each
In Stock
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S71902 CD/P4A Bearing Product Overview & Core Advantages
The S71902 CD/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Characterized by its 15° contact angle and P4 (ABEC-7) tolerance class, this bearing is designed to accommodate high axial loads in one direction while simultaneously handling significant radial loads. Its compact design, featuring a 15 mm bore and 7 mm width, makes it an ideal solution for space-constrained, high-speed applications such as precision spindles. The bearing is pre-lubricated and sealed, ensuring long-term, maintenance-free operation.
S71902 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a series of high-precision angular contact ball bearings. |
| 1902 | Denotes the size series: 19 (light series) with a 15 mm bore diameter. |
| CD | Specifies a 15° contact angle and a matched preload for high rigidity and precise running. |
| P4A | Signifies a P4 (ABEC-7) tolerance class, denoting extremely tight dimensional and running accuracy for superior performance. |
S71902 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and CD preload provides exceptional system rigidity and minimizes axial and radial runout, which is critical for high-precision equipment.
- Optimized Load Capacity: Engineered to support high axial loads in one direction combined with radial loads, making it suitable for complex combined loading scenarios.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 60,000 rpm. This is essential for high-speed spindles and motors.
- Sealed and Lubricated for Life: As a sealed bearing that is pre-lubricated, it is protected from contamination and is designed for maintenance-free operation within its specified temperature range.
S71902 CD/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Rotary Systems (Encoders, measuring instruments)
- High-Speed Motors and Robotic Drives
- Medical Equipment (Dental handpieces, small centrifuges)
- Aerospace Actuation Systems
