71924 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71924 CB/HCP4A
Basic Information
System of measurement
Metric
Weight
1.2 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.01mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
8.731 mm
Ball quantity
41
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6075 lbf
Radial static load rating
6862 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1648.71
/ each
In Stock
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71924 CB/HCP4A Bearing Product Overview & Core Advantages
The 71924 CB/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and speed capability. Manufactured to P4 (ABEC-7) tolerance class, this bearing is designed to accommodate primarily axial loads in one direction and combined loads. Its ceramic ball construction and phenolic cage contribute to superior high-speed performance and reduced weight, making it an ideal solution for demanding, high-rigidity applications.
71924 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 71924 CB/HCP4A provides detailed technical specifications:
- 71924: Basic series designation, indicating a metric, single-row angular contact ball bearing with a 120mm bore, 165mm OD, and 22mm width.
- CB: Denotes a specific contact angle (15°) and internal design optimized for preload and high rigidity.
- HC: Indicates the use of Hybrid Ceramic balls (Silicon Nitride).
- P4: Specifies the tolerance class equivalent to ABEC-7, ensuring ultra-precision.
- A: Signifies that the bearing is supplied with a preload for immediate high-stiffness operation.
71924 CB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation, enabling a high limiting speed of 20,000 rpm. This also provides electrical insulation and extended service life.
- Phenolic Resin Cage: This lightweight and robust cage material is ideal for high-speed operation, offering excellent strength and guidance with minimal centrifugal force.
- Precision & Rigidity: The P4 tolerance and preloaded design ensure minimal runout and high system rigidity, which is critical for maintaining accuracy under load.
- High Load Capacity: With a dynamic load rating of 6075 lbf and a static load rating of 6862 lbf, this bearing is capable of handling significant combined loads.
71924 CB/HCP4A Bearing Typical Application Areas
The 71924 CB/HCP4A is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- High-Frequency Motors and Spindles
- Precision Robotics: Joint and arm actuators requiring high rigidity.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
- Medical Equipment: Dental handpieces and high-speed imaging devices.
