71806 CD/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71806 CD/P4
Basic Information
System of measurement
Metric
Weight
0.026 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
42 mm
Outside diameter tolerance
-0.006mm to 0
Width
7 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
994 lbf
Radial static load rating
844 lbf
Limiting speed
50 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:
$ 296.36
/ each
In Stock
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71806 CD/P4 Bearing Product Overview & Core Advantages
The 71806 CD/P4 is a single-row angular contact ball bearing designed for applications demanding high precision and superior rotational accuracy. Manufactured to P4 (ABEC-7) tolerance class, it delivers exceptional dimensional stability and running accuracy. Its key advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, making it ideal for high-speed spindles and precision machinery where rigidity and minimal runout are critical.
71806 CD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71806 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 30mm bore, 42mm OD, and 7mm width. |
| CD | Indicates a specific contact angle of 15° and is designed for a matched arrangement (duplex mounting). This suffix signifies optimized internal geometry for high-precision applications. |
| P4 | Denotes the tolerance class, equivalent to ABEC-7. This ensures extremely tight dimensional and running accuracy tolerances for superior performance. |
71806 CD/P4 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 15° contact angle and P4 precision provide high axial rigidity and exceptional running accuracy, essential for applications like machine tool spindles.
- Optimized for High Speeds: The phenolic resin cage offers low mass and excellent sliding properties, contributing to stable operation at the high limiting speed of 50,000 rpm. The open design facilitates efficient lubrication management.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads (Dynamic: 994 lbf, Static: 844 lbf), ensuring reliable performance under demanding conditions.
- Pre-Lubricated for Immediate Use: The bearing is supplied lubricated, ready for installation and initial operation, reducing setup time.
71806 CD/P4 Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Equipment
- Optical and Measuring Instruments
