S71905 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71905 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.043 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
42 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
18
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1521 lbf
Radial static load rating
900 lbf
Limiting speed
38 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:
$ 212.22
/ each
In Stock
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S71905 CD/P4A Bearing Product Overview & Core Advantages
The S71905 CD/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing features a 15° contact angle and is supplied with a preload, ensuring minimal axial and radial play for superior system stability. Manufactured to P4 (ABEC-7) tolerance, it guarantees tight dimensional control and smooth, quiet operation. Its compact design, with a 9 mm width, makes it ideal for space-constrained, high-performance assemblies requiring reliable handling of combined loads.
S71905 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7 | Indicates a bearing series with specific internal design and performance characteristics. |
| 1905 | Denotes the size series; 19 for the series and 05 for a 25 mm bore diameter. |
| CD | Specifies a 15° contact angle and a specific internal radial clearance/preload class. |
| P4A | Signifies the P4 (ABEC-7) tolerance class for exceptional dimensional precision and running accuracy. |
S71905 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and applied preload provides high system stiffness, minimizing deflection under load and ensuring precise shaft positioning.
- Superior Load Capacity: Engineered to efficiently handle combined radial and axial loads, making it suitable for applications with complex loading conditions.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures stability and reduces centrifugal forces, contributing to a high limiting speed of 38,000 rpm. The bearing is pre-lubricated for immediate operation.
- Durability and Reliability: Constructed from chrome steel for both rings and balls, offering high wear resistance and fatigue life. The sealed design protects against contamination.
S71905 CD/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-speed, high-precision machinery, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Handpieces
- Aerospace Instrumentation
