71924 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71924 CE/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
1.86 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.004mm to 0
Width
44 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°C to 110 °C
Radial dynamic load rating
17550 lbf
Radial static load rating
18000 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
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
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71924 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The 71924 CE/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and speed. Positioned in the ultra-precision P4A tolerance class, it delivers superior running accuracy and rotational stability. A key advantage is its universal matchable (SU) design, allowing two bearings to be paired in a back-to-back (DB) or face-to-face (DF) arrangement without pre-selection, simplifying installation and optimizing system rigidity. The combination of a ceramic ball material and phenolic resin cage enables outstanding high-speed performance and reduced rotational inertia.
71924 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71924 CE/HCP4ADGA is decoded as follows:
- 71924: Basic series designation for a high-precision, light-weight angular contact ball bearing with a 120mm bore.
- C: Represents a 15° contact angle, optimized for high-speed operation and moderate axial load capacity.
- E: Indicates an optimized internal design and enhanced P4A tolerance class.
- HC: Denotes the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Specifies the tolerance class, exceeding ABEC 7/ISO P4 standards for superior dimensional and running accuracy.
- A: Signifies an Extra Light (A) preload for minimal friction and optimal high-speed operation.
- DGA: Indicates the bearing is supplied Lubricated with a specific high-performance grease suitable for the specified temperature range.
71924 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic (Si3N4) balls with a steel ring significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at high speeds. This construction also offers benefits in electrically sensitive environments.
- Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent dimensional stability and low friction at high rotational speeds, contributing directly to the bearing's 10,000 rpm limiting speed.
- Universal Matchable Design (SU): This feature allows for simplified mounting of preloaded bearing pairs, ensuring high system rigidity and precise shaft positioning without the need for selective assembly.
- Precision & Rigidity: Manufactured to P4A tolerance class with an extra light preload, this bearing provides maximum rotational accuracy, minimal run-out, and rapid response for critical spindles.
- High Load Capacity: With a dynamic load rating of 17,550 lbf and a static load rating of 18,000 lbf, it reliably handles combined radial and axial loads.
71924 CE/HCP4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors and Electric Spindles.
- Medical Equipment: Centrifuges and high-speed dental handpieces.
- Aerospace & Defense Systems: Gyroscopes and navigation instruments.
