7005 ACE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 ACE/HCP4ADGA
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
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
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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7005 ACE/HCP4ADGA Bearing Product Overview & Core Advantages
The 7005 ACE/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and speed capability. As a universal matchable (SU) bearing supplied in a pre-set pair, it delivers superior performance in handling combined radial and axial loads. Its construction with a phenolic cage and ceramic balls enables outstanding high-speed performance and operational stability, making it ideal for high-reliability, precision machinery.
7005 ACE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| ACE | 25° Contact Angle, Ceramic Balls, Phenolic Cage | Optimized for high-speed operation and reduced centrifugal forces. |
| HC | Hybrid Ceramic (Steel rings with ceramic balls) | Enhanced durability, lower friction, and longer service life. |
| P4A | High Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy for precision applications. |
| DGA | Universal Matchable (SU), Preloaded Pair | Simplifies mounting and ensures optimal preload for maximum rigidity in the application. |
7005 ACE/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction and heat generation. This results in a higher limiting speed (85,000 rpm) and improved operational efficiency, especially under high-speed conditions.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction at high speeds, contributing to smooth rotation and reduced vibration.
- 25° Contact Angle & Universal Matching: The 25° contact angle provides an optimal balance between radial and axial load carrying capacity. Being universal matchable (SU), any two bearings can be paired to achieve a specific preload (in this case, Extra Light / Class A), ensuring high system rigidity and simplified inventory.
- Super-Precision P4A Tolerance: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and superior rotational accuracy, which is critical for applications requiring extreme precision.
7005 ACE/HCP4ADGA Bearing Typical Application Areas
The 7005 ACE/HCP4ADGA is engineered for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling heads.
- Precision Robotics: In robotic arm joints and high-accuracy actuators.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and auxiliary power units.
- Medical Equipment: High-speed dental handpieces and surgical drill spindles.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
