7210 CD/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7210 CD/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.77 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
16380 lbf
Radial static load rating
15300 lbf
Limiting speed
46 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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7210 CD/HCP4ADBA Bearing Product Overview & Core Advantages
The 7210 CD/HCP4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability under combined loads, efficiently handling radial forces and bidirectional axial thrust. Manufactured to P4A tolerance class and featuring ceramic balls, this bearing is engineered for high-speed operation and extended service life in demanding industrial environments.
7210 CD/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7210 | Basic bearing series, indicating a 50 mm bore, 90 mm OD, and 40 mm width. |
| C | 15° contact angle, optimized for high-speed applications with significant axial loads. |
| D | Indicates a duplex pair of bearings. |
| HC | Hybrid Ceramic construction, featuring ceramic balls for reduced friction, lower heat generation, and higher speed capability. |
| P4A | High-precision tolerance class, exceeding ABEC 7 standards, ensuring minimal runout and vibration. |
| DB | Back-to-Back mounting arrangement, providing high moment rigidity and excellent stability. |
| A | Extra light preload, minimizing friction at high speeds while maintaining precise shaft positioning. |
7210 CD/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide, rigid support system that effectively resists moment loads and shaft deflection, making it ideal for precision spindles.
- Superior High-Speed Performance: The combination of ceramic balls (lower density and reduced centrifugal force) and a lightweight phenolic cage significantly lowers operating temperatures and allows for a limiting speed of 46,000 rpm.
- Enhanced Load Capacity: The 15° contact angle and duplex construction enable the bearing to support substantial combined radial and axial loads in both directions.
- Precision & Longevity: Manufactured to P4A tolerances with premium chrome steel rings, this bearing guarantees exceptional running accuracy and dimensional stability for extended service life.
7210 CD/HCP4ADBA Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery requiring utmost precision and speed, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Advanced Robotics: High-accuracy joints and rotary actuators.
