7005 CD/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 CD/HCP4ADT
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 Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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7005 CD/HCP4ADT Bearing Product Overview & Core Advantages
The 7005 CD/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional speed and rigidity. This metric bearing features a duplex tandem (DT) arrangement, where two preloaded bearings are matched to share axial loads in one direction, significantly enhancing system stiffness and axial load capacity. Manufactured to a P4A tolerance class, it guarantees ultra-high running accuracy. The combination of a chrome steel ring, ceramic balls, and a phenolic cage enables superior high-speed performance and extended service life, making it an ideal solution for high-precision, high-reliability spindles and machinery.
7005 CD/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Standard bearing series designation, indicating bearing dimensions (25mm bore, 47mm OD, 24mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed applications and accommodating combined loads. |
| D | Indicates the bearing is part of a duplex tandem (DT) matched set. |
| HC | Refers to the Hybrid Ceramic construction, featuring steel rings and ceramic balls for reduced friction and heat generation. |
| P4A | Denotes an ultra-precision tolerance class exceeding ABEC 7, ensuring minimal runout and vibration. |
7005 CD/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 15° contact angle create a highly rigid bearing system capable of handling significant combined loads, particularly heavy thrust loads in one direction.
- Superior High-Speed Performance: The use of ceramic balls (silicon nitride) reduces centrifugal forces, lowers operating temperature, and enables a high limiting speed. The lightweight phenolic cage further enhances stability at high RPMs.
- Precision Engineering: Manufactured to P4A tolerances, this bearing ensures exceptional running accuracy, minimal vibration, and precise rotational characteristics, which is critical for precision bearing applications.
- Preload & Matched Set: Supplied as a preloaded, matched pair (Number of bearings in matched set: 2), this eliminates internal clearance, providing immediate stiffness and precise axial positioning without requiring end-play adjustment during installation.
7005 CD/HCP4ADT Bearing Typical Application Areas
This bearing is engineered for the most demanding high-speed and high-precision machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling spindles and semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Advanced Robotics: Joints and arms requiring high rigidity and precision.
