7008 ACEGA/HCP4AH1
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7008 ACEGA/HCP4AH1
Basic Information
System of measurement
Metric
Weight
0.17 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.004mm to 0
Width
15 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2632 lbf
Radial static load rating
1620 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7008 ACEGA/HCP4AH1 Bearing Product Overview & Core Advantages
The 7008 ACEGA/HCP4AH1 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single bearing features a 25° contact angle and an Extra Light (Class A) preload, making it ideal for systems requiring high rigidity and minimal deflection under combined loads. Its construction with ceramic balls and a phenolic cage contributes to superior high-speed capabilities, with a limiting speed of 41,000 rpm. As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to form a pre-loaded duplex set, offering designers maximum flexibility and performance optimization.
7008 ACEGA/HCP4AH1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series, indicating a 40 mm bore diameter, 68 mm outside diameter, and 15 mm width. |
| AC | Angular Contact design. |
| EGA | Specifies a Universal Matchable (SU) bearing designed for a duplex set arrangement. |
| /HC | Hybrid Ceramic, indicating the use of ceramic balls. |
| P4A | Denotes a high-precision tolerance class with specific running accuracy requirements. |
| H1 | Indicates the bearing is lubricated from the factory. |
7008 ACEGA/HCP4AH1 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds. This construction also offers benefits in electrically sensitive environments.
- Precision Preload (Class A): The integrated extra light preload eliminates internal clearance, providing superior shaft positioning accuracy and system rigidity, which is critical for high-precision applications.
- Phenolic Cage: The lightweight and robust phenolic resin cage is ideal for high-speed operation, offering excellent strength and guidance with minimal friction.
- Universal Matching (SU): This feature allows for the creation of precisely matched duplex sets (e.g., DB, DF, DT) to handle complex combined loads including radial, axial, and moment loads, providing exceptional design flexibility.
- High-Precision Tolerances (P4A): Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring predictable and repeatable performance in the most demanding precision machinery.
7008 ACEGA/HCP4AH1 Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- High-Frequency Motors and Spindles: Where ceramic balls and high-speed capability are essential.
- Precision Robotic Drives: In arms and joints where accuracy and responsiveness are critical.
- Aerospace & Defense Systems: Including gyroscopes, navigation systems, and other critical instrumentation.
- Medical Equipment: Such as high-speed dental handpieces and imaging device rotors.
