7006 CD/HCP4ADBD
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7006 CD/HCP4ADBD
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
55 mm
Outside diameter tolerance
-0.004mm to 0
Width
26 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5265 lbf
Radial static load rating
3600 lbf
Limiting speed
71.5 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
Heavy / Class D
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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7006 CD/HCP4ADBD Bearing Product Overview & Core Advantages
The 7006 CD/HCP4ADBD is a precision angular contact ball bearing engineered for demanding applications requiring exceptional rigidity and accuracy. This duplex back-to-back (DB) matched set features a heavy preload (Class D), providing superior system stiffness and rotational accuracy. Its design is optimized to handle combined radial and axial loads simultaneously, making it ideal for high-speed, high-precision machinery where minimal deflection is critical. The use of ceramic balls and a phenolic cage further enhances its performance in high-velocity and thermally challenging environments.
7006 CD/HCP4ADBD Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Duplex Back-to-Back (DB) matched bearing set |
| HC | Hybrid Ceramic (Silicon Nitride balls with steel rings) |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DBD | Heavy Preload (Class D) |
7006 CD/HCP4ADBD Bearing Structural Features & Performance Benefits
- High Rigidity & System Stiffness: The duplex back-to-back arrangement with heavy preload creates an extremely rigid bearing system that minimizes axial and radial play, ensuring precise shaft positioning and reduced vibration.
- Superior Load Capacity: Engineered to withstand significant combined loads, this bearing efficiently manages both radial forces and thrust loads in both directions due to its 15° contact angle and matched set configuration.
- Enhanced High-Speed Performance: The hybrid ceramic design with silicon nitride balls reduces centrifugal forces, lowers operating temperatures, and enables higher limiting speeds (71,500 rpm). The phenolic cage offers excellent strength-to-weight ratio and operates effectively at high velocities.
- Precision Operation: The P4A tolerance class ensures minimal runout and consistent performance, critical for applications requiring high rotational accuracy.
- Thermal Stability: Ceramic balls exhibit lower thermal expansion compared to steel, maintaining preload stability across the operating temperature range (-30°C to 110°C).
7006 CD/HCP4ADBD Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines
- Precision Instrumentation: Measuring equipment, optical scanners, and coordinate measuring machines
- High-Speed Motors: Servo motors, spindle motors, and high-frequency electric motors
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Medical Equipment: Dental handpieces, laboratory centrifuges, and surgical robotics
