71906 ACDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71906 ACDTP/HCP4B
Basic Information
System of measurement
Metric
Weight
0.045 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 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° to 110 °C
Radial dynamic load rating
1521 lbf
Radial static load rating
968 lbf
Limiting speed
36 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:
$ 236.06
/ each
In Stock
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71906 ACDTP/HCP4B Bearing Product Overview & Core Advantages
The 71906 ACDTP/HCP4B is a single-row angular contact ball bearing engineered for ultra-high precision and high-speed applications. Positioned in the P4 (ABEC-7) tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its primary advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, making it ideal for demanding scenarios requiring superior rigidity and minimal runout. The combination of a ceramic ball material and phenolic cage contributes to its high-speed capability, reduced weight, and stable thermal performance.
71906 ACDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing series and size designation (30mm bore, 47mm OD, 9mm width) |
| AC | Angular Contact design with a 25° contact angle |
| DTP | Indicates a preload is applied to the bearing for enhanced rigidity |
| HC | Refers to the Hybrid Ceramic construction (steel rings with ceramic balls) |
| P4B | Specifies the P4 (ABEC-7) precision tolerance class for bore, OD, and width |
71906 ACDTP/HCP4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design, combined with a specified preload, ensures high system rigidity and precise shaft positioning, minimizing deflection under load.
- Superior High-Speed Performance: The hybrid ceramic design (steel rings, ceramic balls) significantly reduces centrifugal forces and friction, enabling a high limiting speed of 36,000 rpm. The lightweight phenolic cage further enhances stability at high rotational speeds.
- Excellent Load Capacity: With a 25° contact angle, this bearing is optimized to handle significant combined radial and axial loads, offering a dynamic load rating of 1521 lbf and a static load rating of 968 lbf.
- Thermal and Operational Stability: The ceramic balls exhibit lower thermal expansion and provide electrical insulation, while the phenolic cage offers good dimensional stability across the operating temperature range of -30°C to 110°C.
71906 ACDTP/HCP4B Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery and systems, including:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace Actuators and Control Systems
- Medical and Dental Handpiece Drives
- Advanced Robotics and Automation Equipment
