71815 CDGC/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71815 CDGC/P4
Basic Information
System of measurement
Metric
Weight
0.14 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
95 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
33
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3218 lbf
Radial static load rating
3825 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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71815 CDGC/P4 Bearing Product Overview & Core Advantages
The 71815 CDGC/P4 is a single-row angular contact ball bearing engineered for high-precision applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this bearing is designed to accommodate combined loads, primarily handling thrust loads in one direction while supporting significant radial loads. Its universal matchable (SU) design allows for flexible mounting in pairs to achieve preload and handle bidirectional axial loads. The phenolic cage and optimized internal geometry contribute to its suitability for high-speed operation up to 22,000 rpm, making it an ideal component for spindles and other precision machinery.
71815 CDGC/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71815 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 75 mm bore, 95 mm OD, and 10 mm width. |
| CD | Specifies a 15° contact angle, optimized for high-speed performance and moderate thrust capacity. |
| GC | Indicates a Moderate / Class C preload. This internal preload enhances bearing rigidity and minimizes axial play, ensuring precise shaft positioning. |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances for superior performance. |
71815 CDGC/P4 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and Class C preload work in tandem to deliver exceptional system stiffness and minimal runout, which is critical for maintaining accuracy under load.
- Optimized Load Capacity: With a 15° contact angle and robust construction, this bearing efficiently handles combined radial and substantial one-direction axial loads. Its dynamic load rating of 3218 lbf ensures reliable performance in demanding conditions.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry allows for a limiting speed of 22,000 rpm, making it suitable for high-speed spindles.
- Universal Matching Capability (SU): This feature allows two identical bearings to be mounted in various arrangements (back-to-back, face-to-face, or tandem) to adjust preload and handle complex loading scenarios, offering great design flexibility.
71815 CDGC/P4 Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for applications requiring high speed, rigidity, and accuracy, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Robotics and Automation Equipment
- Medical and Dental Equipment Spindles
- High-Speed Pumps and Compressors
