S71906 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71906 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.049 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 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
20
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1609 lbf
Radial static load rating
1024 lbf
Limiting speed
32 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:
$ 283.97
/ each
In Stock
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S71906 CD/P4A Bearing Product Overview & Core Advantages
The S71906 CD/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a single-row bearing manufactured to P4 (ABEC-7) tolerance class, it offers superior running precision. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. The bearing comes preloaded and pre-lubricated, ensuring high rigidity and immediate operational readiness, making it ideal for high-reliability, high-precision spindles and machinery.
S71906 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a series of high-precision angular contact ball bearings. |
| 1906 | Specifies the bearing size: 30mm bore, 47mm OD, 9mm width. |
| CD | Signifies a 15° contact angle and a specific internal design optimized for high rigidity and high-speed operation. |
| P4A | Denotes the tolerance class P4 (ABEC-7), ensuring extremely tight dimensional and running accuracy. |
S71906 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and preload provides high system rigidity and minimizes axial and radial runout, which is critical for precision machining and high-speed spindles.
- Superior Load Capacity: Engineered to handle combined loads effectively, with a high dynamic load rating of 1609 lbf, making it robust for demanding applications.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 32,000 rpm. The standard lubrication further supports stable operation at these high rotational speeds.
- Durability and Reliability: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and long service life under typical operating conditions.
S71906 CD/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: High-accuracy measuring devices and optical scanners.
- High-Frequency Motors and Spindles: Where minimal vibration and high rotational accuracy are paramount.
- Medical Equipment: Dental handpieces and small, high-speed surgical tools.
