7005 CD/HCP4ADBC
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 CD/HCP4ADBC
Basic Information
System of measurement
Metric
Weight
0.14 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3510 lbf
Radial static load rating
2340 lbf
Limiting speed
103 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
Moderate / Class C
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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7005 CD/HCP4ADBC Bearing Product Overview & Core Advantages
The 7005 CD/HCP4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement provides superior stability and can accommodate combined radial and axial loads from both directions. Manufactured to a P4A tolerance class and featuring a phenolic cage with ceramic balls, it is engineered for high-speed operation and long-term reliability in precision machinery.
7005 CD/HCP4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a duplex pair in a back-to-back (DB) arrangement, providing high moment rigidity. |
| HC | Signifies the use of hybrid ceramic balls (Silicon Nitride), offering reduced friction, higher speed capability, and longer service life. |
| P4A | Denotes an ultra-precision tolerance class with running accuracy exceeding ABEC 7 standards. |
| Open | The bearing is supplied without seals or shields, optimized for high-speed applications where minimal friction is critical. |
| Moderate / Class C Preload | Specifies a pre-set internal clearance for enhanced stiffness and precise rotational accuracy. |
7005 CD/HCP4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide effective spread, significantly increasing system rigidity and resistance to moment loads, making it ideal for precision spindles.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density hybrid ceramic balls reduces centrifugal forces, enabling a high limiting speed of 103,000 rpm.
- Enhanced Load Capacity: With a 15° contact angle and a dynamic load rating of 3510 lbf, this bearing is optimized to handle significant combined radial and axial loads simultaneously.
- Precision & Longevity: Manufactured to P4A precision tolerances and using high-grade chrome steel rings, this bearing ensures minimal runout and consistent performance, critical for high-accuracy applications.
7005 CD/HCP4ADBC Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Robotics and Automation Arms
- High-Frequency Spindles for PCB Drilling and Routing
- Medical Device Motors and Dental Handpieces
- Aerospace Instrumentation and Gyroscopes
