71926 ACDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71926 ACDGB/HCP4A
Basic Information
System of measurement
Metric
Weight
1.3 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
180 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
19598 lbf
Radial static load rating
22950 lbf
Limiting speed
7.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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
71926 ACDGB/HCP4A Bearing Product Overview & Core Advantages
The 71926 ACDGB/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This single bearing features a 25° contact angle and is manufactured to P4A tolerance class, ensuring ultra-precise rotational characteristics. Its core advantage lies in its ability to accommodate combined loads, specifically high axial loads in one direction, making it ideal for applications requiring high rigidity and positional accuracy. The combination of a ceramic ball material and a phenolic cage contributes to its suitability for high-speed operation, with a limiting speed of 7,500 rpm.
71926 ACDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 71926 ACDGB/HCP4A provides detailed technical specifications through its suffixes:
- 71926: Basic model number indicating a metric, angular contact ball bearing with a 130mm bore and 180mm outside diameter.
- AC: Signifies Angular Contact design with a 25° contact angle.
- D: Indicates a "Heavy" contact angle series (typically 40°), but in this specific context with the provided 25° angle, it denotes a specific internal design and load capacity.
- GB: Represents a Light preload (Class B). This preload eliminates internal clearance, enhancing system rigidity and reducing noise and vibration.
- /HC: Denotes the use of Hybrid Ceramic balls (Silicon Nitride), which offer advantages in high-speed, high-temperature, and non-lubricated environments.
- P4A: Specifies the tolerance class. P4A is an ultra-precision grade with extremely tight tolerances on bore, outside diameter, and width for superior running accuracy.
71926 ACDGB/HCP4A Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry & High Rigidity: The 25° contact angle and Light preload are engineered to provide high axial stiffness, minimizing deflection under load for improved machining or positioning accuracy.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls reduces centrifugal forces, enabling stable operation at the high limiting speed of 7,500 rpm.
- Enhanced Durability and Life: Hybrid ceramic construction provides excellent wear resistance, lower operating temperatures, and extended service life compared to all-steel bearings, especially in challenging environments.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore diameter, outside diameter, and width, this bearing ensures consistent, high-precision performance.
- Universal Matching Capability (SU): This bearing is Universal Matchable, allowing multiple bearings to be mounted together in sets (e.g., duplex or triplex arrangements) without selective assembly to achieve specific preload or rigidity requirements.
71926 ACDGB/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery and systems, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring high rigidity and running accuracy.
- Precision Robotic Drives: Joints and arm assemblies where compact size, high speed, and positional accuracy are critical.
- High-Frequency Motors and Spindles: Applications demanding low vibration and the ability to operate at extreme rotational speeds.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring the utmost reliability and precision.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
