71812 CD/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71812 CD/P4
Basic Information
System of measurement
Metric
Weight
0.1 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
78 mm
Outside diameter tolerance
-0.007mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3038 lbf
Radial static load rating
3218 lbf
Limiting speed
24 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:
$ 576.68
/ each
In Stock
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71812 CD/P4 Bearing Product Overview & Core Advantages
The 71812 CD/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to accommodate combined loads (radial and axial loads in one direction), this bearing features a P4 (ABEC-7) tolerance class for superior running accuracy. Its compact design, with a 10 mm width, makes it ideal for space-constrained, high-speed arrangements. The phenolic cage and optimized 15° contact angle contribute to its high-speed capabilities and smooth operation, making it a reliable choice for demanding precision machinery.
71812 CD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71812 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 60 mm bore. |
| CD | Indicates a specific contact angle (15°) and internal design optimized for high rigidity and precise operation. |
| P4 | Specifies the tolerance class, equivalent to ABEC-7, denoting very high precision for running accuracy and low vibration. |
71812 CD/P4 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle provides high rigidity and accurate shaft positioning, essential for precision applications. The P4 tolerance class ensures minimal runout and vibration.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling stable operation at the high limiting speed of 24,000 rpm. The open design facilitates efficient lubrication management.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads simultaneously, with a dynamic load rating of 3038 lbf and a static load rating of 3218 lbf.
- Pre-Lubricated for Immediate Use: The bearing comes lubricated and is suitable for a wide operating temperature range of -30°C to 110°C, ensuring immediate installation and reliable initial operation.
71812 CD/P4 Bearing Typical Application Areas
This bearing is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles
- High-Frequency Electric Spindles
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Aerospace Instrumentation
