71924 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71924 CE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.93 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
14.288 mm
Ball quantity
24
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
10688 lbf
Radial static load rating
9000 lbf
Limiting speed
19 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:
$ 1648.76
/ each
In Stock
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71924 CE/HCP4A Bearing Product Overview & Core Advantages
The 71924 CE/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and speed capability. This single-row bearing features a 15° contact angle and is supplied with a preload, ensuring high system rigidity and minimal axial/radial runout. Manufactured to P4 (ABEC-7) tolerance class, it guarantees superior dimensional and running accuracy. The combination of a ceramic ball material and a phenolic cage enables outstanding high-speed performance, with a limiting speed of 19,000 rpm, making it ideal for demanding, high-velocity spindle applications.
71924 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates the use of Hybrid Ceramic balls (Silicon Nitride), which reduce centrifugal forces, lower operating temperatures, and extend service life at high speeds. |
| HC | Refers to the Phenolic (Fabric-Reinforced) Cage. This lightweight cage offers excellent strength and guidance at very high rotational speeds. |
| P4A | Specifies the P4 (ABEC-7) tolerance class and that the bearing is supplied with a specific preload for immediate high-rigidity performance upon installation. |
71924 CE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The 15° contact angle and factory-applied preload work in unison to deliver maximum system stiffness, critical for minimizing deflection under load in precision machinery.
- Superior High-Speed Capability: The hybrid ceramic balls significantly reduce mass and centrifugal force, while the lightweight phenolic cage ensures stable operation. This synergy allows the bearing to achieve its high limiting speed of 19,000 rpm.
- Optimized Load Capacity: Designed to support combined loads, this bearing efficiently handles substantial radial loads and simultaneous axial loads in one direction, with a dynamic load rating of 10,688 lbf.
- Enhanced Durability: The open design allows for optimized lubrication schemes in the application. The combination of high-grade chrome steel rings and wear-resistant ceramic balls results in extended service life and reduced maintenance intervals.
71924 CE/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for integrally mounted motor applications.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision instrumentation.
