71824 CD/P4DGC
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71824 CD/P4DGC
Basic Information
System of measurement
Metric
Weight
1.1 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
8.731 mm
Ball quantity
35
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12150 lbf
Radial static load rating
20250 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
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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71824 CD/P4DGC Bearing Product Overview & Core Advantages
The 71824 CD/P4DGC is a precision angular contact ball bearing designed for demanding applications requiring high rotational accuracy and rigidity. Engineered to a P4 tolerance class, this bearing excels in scenarios where superior running accuracy is non-negotiable. Its universal matchable (SU) design allows two bearings to be paired in a back-to-back or face-to-face arrangement to optimize performance for combined loads. The phenolic cage and moderate preload (Class C) contribute to its high-speed capability and smooth operation, making it an ideal solution for high-precision spindles and other critical machinery.
71824 CD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71824 | Basic bearing designation, indicating a metric series angular contact ball bearing with a 120 mm bore, 150 mm OD, and 32 mm width. |
| CD | Specifies a 15° contact angle and indicates the bearing is designed for universal matching (SU). |
| P4 | Denotes a high-precision tolerance class, superior to standard ABEC-7, ensuring minimal runout and vibration. |
| DGC | Indicates the bearing is lubricated and comes with a moderate preload (Class C) applied, ready for installation. |
71824 CD/P4DGC Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance standards with a 15° contact angle, this bearing provides exceptional dimensional stability and running accuracy, which is critical for minimizing deflection in high-speed spindles.
- Optimized for Combined Loads: The angular contact design is inherently capable of supporting combined radial and axial loads simultaneously. The universal matchable (SU) feature allows for precise arrangement in pairs to handle complex load conditions and moments.
- Superior High-Speed Performance: The lightweight phenolic cage ensures low inertia and excellent performance at the limiting speed of 16,250 rpm. The cage's design reduces friction and heat generation.
- Ready-to-Install Convenience: The bearing is supplied with factory-applied lubrication and a moderate preload (Class C), simplifying the installation process and ensuring immediate, optimal performance.
71824 CD/P4DGC Bearing Typical Application Areas
This bearing is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles: For CNC milling centers, grinding spindles, and lathes requiring high rigidity and running accuracy.
- Precision Rotary Systems: In applications such as industrial robots, indexing tables, and measuring instruments.
- High-Frequency Motors and Spindles: Where a combination of speed, precision, and load capacity is essential.
