71926 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71926 ACD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
2.6 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
48 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
31500 lbf
Radial static load rating
45900 lbf
Limiting speed
11 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
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71926 ACD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71926 ACD/HCP4ADGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with ceramic balls and manufactured to P4A tolerance class, this bearing delivers superior high-speed capabilities and extended service life. Its universal matchable (SU) design allows for flexible mounting in duplex pairs to support combined loads (radial and axial) simultaneously. The combination of an extra light preload and a 25° contact angle ensures low operating torque and high rigidity, making it ideal for high-precision, high-reliability spindle applications.
71926 ACD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71926 ACD/HCP4ADGA provides detailed technical specifications:
- 71926: Basic bearing series and size designation (130mm bore, 180mm OD).
- ACD: Angular Contact design with a 25° contact angle.
- HCP4A: Indicates P4A tolerance class for ultra-precision, along with specific internal design enhancements.
- DGA: Signifies a Universal Matchable (SU) bearing, supplied as one of a pair (2 bearings in a matched set) for preloaded arrangements.
71926 ACD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and universal matching enable the bearing to be mounted in pairs to create a highly rigid system capable of handling significant combined radial and axial loads.
- High-Speed Performance: The use of ceramic balls reduces centrifugal forces and friction, while the lightweight phenolic cage ensures stability. This combination allows for a high limiting speed of 11,000 rpm.
- Precision Operation: Manufactured to P4A tolerance class with an extra light preload, the bearing provides exceptional running accuracy and minimal rotational vibration, which is critical for precision machinery.
- Durability & Temperature Resistance: The chrome steel rings and ceramic balls offer excellent wear resistance and can operate effectively within a temperature range of -30°C to 110°C.
71926 ACD/HCP4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and spindle drives requiring high accuracy and rigidity.
- High-Speed Motors and Drives: Especially in applications demanding low friction and high rotational speeds.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
