7005 ACE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 ACE/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.13 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
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2858 lbf
Radial static load rating
1755 lbf
Limiting speed
85 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 ACE/HCP4ADT Bearing Product Overview & Core Advantages
The 7005 ACE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional speed and rigidity. This duplex tandem (DT) matched set features two bearings preloaded against each other, delivering superior axial rigidity and the ability to handle significant combined loads. Manufactured to a P4A tolerance class and equipped with a phenolic cage and ceramic balls, it is engineered for high-speed operation and long-term reliability in precision machinery.
7005 ACE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACE | 25° Contact Angle, Standard internal clearance | Optimized for high axial load capacity and high-speed performance. |
| HC | Hybrid Ceramic (Ceramic balls, Steel rings) | Reduced friction, higher limiting speed, and extended service life. |
| P4A | High Precision Tolerance Class | Ensures exceptional running accuracy, low vibration, and precise shaft positioning. |
| DT | Duplex Tandem Arrangement | Preloaded set of two bearings for maximum axial stiffness in one direction. |
7005 ACE/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement provides a preloaded configuration, resulting in extremely high axial rigidity. This allows the bearing set to withstand heavy combined loads (radial and axial) simultaneously, making it ideal for applications with high thrust demands.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage and hybrid ceramic construction (ceramic balls) significantly reduces centrifugal forces and friction, enabling a very high limiting speed of 85,000 rpm. This design minimizes heat generation and power loss.
- Precision & Longevity: Manufactured to P4A precision tolerances, this bearing ensures smooth, quiet, and vibration-free operation. The open seal type is optimized for use with oil mist or circulating oil lubrication systems, which is typical for ultra-high-speed spindles, ensuring efficient heat dissipation and contamination flushing.
7005 ACE/HCP4ADT Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery where speed, precision, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for aerospace and medical device manufacturing.
- Turbochargers and other high-rotational-speed equipment.
