71824 CD/P2DBA
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71824 CD/P2DBA
Basic Information
System of measurement
Metric
Weight
1.1 kg
Tolerance class
P2
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
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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71824 CD/P2DBA Bearing Product Overview & Core Advantages
The 71824 CD/P2DBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and can accommodate combined loads (radial and axial loads from both directions simultaneously). Manufactured to P2 tolerance class, it ensures minimal runout and vibration, making it ideal for high-precision, high-speed machinery. The pre-lubricated design and phenolic cage contribute to reliable, long-term performance.
71824 CD/P2DBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71824 | Basic bearing designation, indicating a metric series angular contact ball bearing. |
| C | 15° contact angle, optimized for high-speed applications and moderate axial loads. |
| D | Indicates a duplex pair of bearings. |
| P2 | High precision tolerance class, offering extremely tight dimensional and running accuracy. |
| DB | Back-to-Back arrangement. This configuration provides high moment rigidity and is excellent for withstanding overturning moments. |
| A | Extra light preload. This preload ensures shaft positioning accuracy and reduces vibration and noise during operation. |
71824 CD/P2DBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide, rigid support system that significantly increases resistance to moment loads and enhances overall system stability.
- Superior Precision: Manufactured to P2 tolerance class with a bore and outside diameter tolerance of -0.004mm to 0, this bearing guarantees exceptional running accuracy for demanding applications.
- Optimized for High Speeds: The lightweight phenolic cage and 15° contact angle are engineered to minimize centrifugal forces and friction, enabling a high limiting speed of 16,250 rpm.
- Robust Load Capacity: With a dynamic load rating of 12,150 lbf and a static load rating of 20,250 lbf, this bearing is capable of handling significant combined radial and axial loads.
- Reliable Operation: The standard lubrication and chrome steel construction ensure consistent performance within a temperature range of -30°C to 110°C.
71824 CD/P2DBA Bearing Typical Application Areas
The 71824 CD/P2DBA is engineered for high-performance machinery where precision and rigidity are paramount. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in robotics and high-accuracy transmission systems.
- High-Frequency Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical and Laboratory Equipment: Where minimal vibration and high rotational accuracy are critical.
- Aerospace Actuation Systems: For control surfaces and other precision mechanisms.
