71906 ACD/P4AQGC
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71906 ACD/P4AQGC
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4005 lbf
Radial static load rating
3892 lbf
Limiting speed
83 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 233.85
/ each
In Stock
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71906 ACD/P4AQGC Bearing Product Overview & Core Advantages
The 71906 ACD/P4AQGC is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under the Metric system, this bearing features an Open design and is engineered to handle significant combined loads, including radial and axial loads in one direction. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-speed spindles and other precision machinery. The Universal Matchable (SU) designation allows for flexible mounting in sets to achieve optimal preload and system stiffness.
71906 ACD/P4AQGC Bearing Model Code Explained, Specifications & Naming Convention
The model number 71906 ACD/P4AQGC provides detailed technical specifications:
- 71906: Basic series designation, indicating a light series angular contact bearing with a 30mm bore.
- A: Denotes a 25° contact angle, optimized for higher axial load capacity.
- C: Indicates a Moderate Preload (Class C), providing a balance between rigidity and operational smoothness.
- D: Specifies a Phenolic (Resin) cage, contributing to lower weight and excellent high-speed performance.
- /P4A: Signifies an ultra-precision tolerance class with enhanced running accuracy requirements.
- QGC: Code for the specific lubrication used, suitable for the specified temperature range.
71906 ACD/P4AQGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 25° contact angle provides robust support for combined radial and axial loads. The Moderate Preload (Class C) eliminates internal clearance, enhancing system stiffness and positioning accuracy.
- Superior High-Speed Performance: The lightweight Phenolic cage minimizes centrifugal forces, enabling a high limiting speed of 83,000 rpm. This makes it an excellent choice for high-speed applications.
- Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, critical for maintaining precision in demanding operations.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be mounted in sets (back-to-back, face-to-face, or tandem) without selective matching, simplifying installation and optimizing performance in multi-bearing arrangements.
71906 ACD/P4AQGC Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: Servo motors, high-frequency spindles.
- Aerospace & Defense Systems: Gyroscopes, radar equipment.
- Medical Equipment: Dental handpieces, high-speed centrifuges.
- Robotics: High-accuracy robotic arm joints and actuators.
