71824 ACDGC/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71824 ACDGC/P4
Basic Information
System of measurement
Metric
Weight
0.55 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
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
8.731 mm
Ball quantity
35
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7020 lbf
Radial static load rating
9562 lbf
Limiting speed
16.25 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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71824 ACDGC/P4 Bearing Product Overview & Core Advantages
The 71824 ACDGC/P4 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. As a single bearing that is Universal Matchable (SU), it enables precise preload control when paired with an identical bearing. Its 25° contact angle and P4 tolerance class make it ideally suited for applications subject to combined loads (radial and axial) where high rigidity and high-speed performance are critical. The phenolic cage and optimized internal geometry contribute to smooth operation at its impressive limiting speed.
71824 ACDGC/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| AC | Angular Contact | Optimized for combined radial and axial loads. |
| D | High Contact Angle (25°) | Provides superior axial load capacity and rigidity. |
| GC | Moderate Preload (Class C) | Reduces axial play, enhances system stiffness, and minimizes vibration. |
| P4 | High Precision Tolerance Class | Ensures extremely tight dimensional and running accuracy for high-precision applications. |
71824 ACDGC/P4 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 25° contact angle and Moderate Preload (GC) provides excellent resistance to deflection under combined loads, ensuring stable and precise shaft positioning.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and allows for a high limiting speed of 16,250 rpm, making it a true high-speed bearing.
- Precision Engineering: Manufactured to P4 tolerance standards, this bearing guarantees minimal runout and superior rotational accuracy, which is critical for precision machinery.
- Universal Matching: The Universal Matchable (SU) designation allows for simplified mounting and precise preload achievement when used in pairs (back-to-back or face-to-face), reducing assembly complexity.
71824 ACDGC/P4 Bearing Typical Application Areas
This precision bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring utmost accuracy and rigidity.
- Precision Gearboxes: Where low noise, high speed, and precise shaft alignment are paramount.
- High-Frequency Motors and Spindles: Used in applications demanding minimal vibration at very high rotational speeds.
- Medical and Laboratory Equipment: Such as centrifuges and precision scanners that rely on smooth, accurate, and reliable rotation.
