71824 ACDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71824 ACDGA/HCP4
Basic Information
System of measurement
Metric
Weight
0.49 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
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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71824 ACDGA/HCP4 Bearing Product Overview & Core Advantages
The 71824 ACDGA/HCP4 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined radial and axial loads simultaneously, this bearing features a single-row design with a 25° contact angle, optimized for high rigidity and operational stability. Manufactured to P4 tolerance class, it guarantees ultra-precise running accuracy and minimal rotational vibration. Its ceramic ball construction and phenolic cage contribute to superior high-speed capability, reduced friction, and extended service life, making it an ideal solution for high-reliability machinery.
71824 ACDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71824 ACDGA/HCP4 is decoded as follows:
- 71824: Basic series designation, indicating a 120mm bore, 150mm OD, and 16mm width.
- AC: Angular Contact design.
- D: Specific internal design and contact angle (25°).
- GA: Indicates a Universal Matchable (SU) bearing, supplied in a set of two for preloaded arrangements.
- HCP4: Defines the tolerance class and material specifications.
- HC: Denotes the use of Hybrid Ceramic balls (Silicon Nitride).
- P4: Specifies a high-precision tolerance class per ISO standards.
71824 ACDGA/HCP4 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds (16,250 rpm). This construction also provides superior resistance to wear and electrical arcing.
- Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent dimensional stability at high speeds, contributing to smooth operation and reduced vibration.
- High-Precision P4 Tolerance: Manufactured to the strictest dimensional and running accuracy standards, ensuring minimal runout and superior performance in precision applications.
- Universal Matching (SU): Supplied as a universally matchable pair, these bearings can be mounted in any combination (DB, DF, DT) to achieve the required preload and rigidity without selective assembly.
- Optimized Load Capacity: The 25° contact angle provides an excellent balance between radial dynamic load rating (7,020 lbf) and axial load capacity.
71824 ACDGA/HCP4 Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where speed, precision, and rigidity are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and avionics.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Advanced Test & Measurement Equipment
