71824 CD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71824 CD/P4DGB
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
Light / Class B
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
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71824 CD/P4DGB Bearing Product Overview & Core Advantages
The 71824 CD/P4DGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 tolerance class, it is optimized to handle combined loads—simultaneous radial and axial forces. Its universal matchable (SU) design allows for flexible mounting in preloaded pairs, delivering high system rigidity and operational stability. With a light preload (Class B) and a 15° contact angle, this bearing is ideally suited for high-speed spindles and other precision machinery where minimal deflection and superior running accuracy are critical.
71824 CD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
The model number 71824 CD/P4DGB provides detailed technical specifications:
- 71824: Basic bearing designation indicating a metric, angular contact type with a 120mm bore, 150mm OD, and 32mm width.
- C: Denotes a 15° contact angle.
- D: Indicates the bearing is supplied as a universal matchable (SU) pair.
- P4: Specifies the tolerance class, corresponding to high precision with tight dimensional and running accuracy tolerances.
- DGB: Indicates a light preload (Class B) applied to the universal matched pair.
71824 CD/P4DGB Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The angular contact design and universal matching (SU) enable the bearing to be mounted in pairs (back-to-back, face-to-face, or tandem) to create a highly rigid system that minimizes axial and radial play. The P4 precision grade ensures exceptional running accuracy.
- Superior Load Capacity: The 15° contact angle is optimized to handle significant combined loads. With a dynamic load rating of 12,150 lbf and a static load rating of 20,250 lbf, it provides reliable performance under demanding conditions.
- High-Speed Capability: The phenolic resin cage and optimized internal geometry contribute to low friction and heat generation, supporting a high limiting speed of 16,250 rpm.
- Premium Materials & Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high durability and wear resistance. The open seal type allows for custom lubrication schemes to further enhance performance in specific applications.
71824 CD/P4DGB Bearing Typical Application Areas
This high-precision bearing is ideally employed in:
- Machine Tool Spindles for CNC machining centers, grinders, and lathes.
- High-Speed Drives and precision spindles.
- Industrial Pumps and Compressors.
- Precision Instruments and medical equipment.
- Robotics and automation systems requiring high accuracy and rigidity.
