71906 CE/HCPA9ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71906 CE/HCPA9ADBA
Basic Information
System of measurement
Metric
Weight
0.09 kg
Tolerance class
PA9A
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
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2077 lbf
Radial static load rating
1440 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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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71906 CE/HCPA9ADBA Bearing Product Overview & Core Advantages
The 71906 CE/HCPA9ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) matched set delivers superior high rigidity and can accommodate combined loads (radial and axial) simultaneously. Manufactured to an ultra-precise PA9A tolerance class and featuring a phenolic cage with ceramic balls, it is engineered for high-speed operation and long service life in high-performance machinery.
71906 CE/HCPA9ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71906 CE/HCPA9ADBA provides detailed technical specifications:
- 71906: Basic bearing series, indicating a light series, 30mm bore, 47mm OD.
- C: 15° contact angle.
- E: Optimized internal design.
- HCPA9A: Denotes the tolerance class PA9A (high precision).
- DB: Duplex Back-to-Back arrangement, providing high moment rigidity.
- A: Extra light preload (Class A).
71906 CE/HCPA9ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and supports significant combined loads.
- High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 100,500 rpm.
- Precision Operation: Manufactured to PA9A tolerance class with tight dimensional control on bore, outside diameter, and width for exceptional running accuracy.
- Reduced Friction & Wear: Ceramic balls offer superior hardness, lower thermal expansion, and electrically insulating properties, contributing to extended bearing life.
- Thermal Stability: The phenolic cage maintains dimensional stability across the operating temperature range of -30°C to 110°C.
71906 CE/HCPA9ADBA Bearing Typical Application Areas
This high-precision bearing is ideally suited for applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary actuators.
- High-Frequency Motors & Spindles: PCB drilling spindles and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: High-speed centrifuges and imaging devices.
